Claude Opus 4.6vsGrok 4

Head-to-head comparison across 25 high-difficulty extraction tasks spanning e-commerce, legal, medical, finance, and logic domains.

Claude Opus 4.6

Anthropicultra
Accuracy
92.5%
Cost / 1k Tasks
$10.00
Latency
4814ms

Grok 4

xAIultra
★ Higher Accuracy
Accuracy
92.6%
Cost / 1k Tasks
$6.00
Latency
34573ms

How we test

Last benchmarked: February 27, 2026

25 Extraction Tasks

Hand-crafted extraction tasks across 5 domains (E-commerce, Legal, Medical, Finance, Logic). Each rated difficulty 4–5, designed to expose ambiguous entities, nested structures, multi-step reasoning, and type coercion.

Deterministic Scoring

Every response is scored with field-level deterministic comparison - booleans and numbers checked exactly (5 % tolerance for numbers), strings compared via embedding cosine similarity. A field is marked correct when similarity ≥ 80%. Arrays are matched element-by-element. Scores range 0–100 per task.

Consistent & Reproducible

Each model runs every task once under identical conditions (same prompts, same schema). Results are timestamped and versioned so you can track changes over time.

Task Results

Each task shows the input, both model outputs, and the accuracy score.

25 tasks · 5 domains
01E-commerceAmbiguous Color Extraction
97★vs92
Input
Nike Air Max 97 OG QS "Metallic Gold" Bullet — Titanium Violet / Varsity Red — Men's US 10.5 — 2018 Retro Release
Expected Output
{
  "brand": "Nike",
  "model": "Air Max 97 OG QS",
  "colorway": "Metallic Gold",
  "color_1": "Titanium Violet",
  "color_2": "Varsity Red",
  "size": "US 10.5",
  "gender": "Men's",
  "year": "2018",
  "edition": "Retro Release"
}
Claude Opus 4.6
2970ms97/100

All fields correct

✓brandNike
✓modelAir Max 97 OG QS
✓colorwayMetallic Gold
✓color_1Titanium Violet
✓color_2Varsity Red
✓size10.5
✓genderMen
✓year2018
✓editionRetro Release
9/9 fields correct
Grok 4
79568ms92/100

Incorrect/missing fields: edition

✓brandNike
✓modelAir Max 97
✓colorwayMetallic Gold Bullet
✓color_1Titanium Violet
✓color_2Varsity Red
✓sizeUS 10.5
✓genderMen's
✓year2018
✗editionOG QS(expected: Retro Release)
8/9 fields correct
Why this is hard: All 9 fields must be exact. 'Titanium Violet' must be extracted as a single compound color, NOT split into material + color. 'Metallic Gold' is the colorway nickname, not color_1.
02E-commerceNested Size & Variant Parsing
100★vs100
Input
Apple MacBook Pro 14" M3 Max (16-core CPU / 40-core GPU) — 48GB Unified Memory — 1TB SSD — Space Black — AppleCare+ Bundle — Open Box Like New
Expected Output
{
  "brand": "Apple",
  "model": "MacBook Pro 14\"",
  "chip": "M3 Max",
  "cpu_cores": 16,
  "gpu_cores": 40,
  "memory_gb": 48,
  "storage": "1TB SSD",
  "color": "Space Black",
  "condition": "Open Box Like New",
  "includes_warranty": true
}
Claude Opus 4.6
2970ms100/100

All fields correct

✓brandApple
✓modelMacBook Pro 14"
✓chipM3 Max
✓cpu_cores16
✓gpu_cores40
✓memory_gb48
✓storage1TB SSD
✓colorSpace Black
✓conditionOpen Box Like New
✓includes_warrantytrue
10/10 fields correct
Grok 4
8577ms100/100

All fields correct

✓brandApple
✓modelMacBook Pro 14"
✓chipM3 Max
✓cpu_cores16
✓gpu_cores40
✓memory_gb48
✓storage1TB SSD
✓colorSpace Black
✓conditionOpen Box Like New
✓includes_warrantytrue
10/10 fields correct
Why this is hard: Numeric fields (cpu_cores, gpu_cores, memory_gb) must be integers, not strings. 'includes_warranty' must be boolean true (AppleCare+ = warranty). 'condition' must not be just 'New' — it is specifically 'Open Box Like New'.
03E-commerceMulti-pack Unit Price Trap
100★vs100
Input
Olaplex Hair Perfector No. 3 — 100ml (3.3 fl oz) × 3 Pack — $89.97 ($29.99/each) — Sulfate Free — Salon Professional — Ships from Authorized Dealer
Expected Output
{
  "brand": "Olaplex",
  "product_name": "Hair Perfector No. 3",
  "volume_ml": 100,
  "volume_oz": 3.3,
  "pack_quantity": 3,
  "total_price_usd": 89.97,
  "unit_price_usd": 29.99,
  "is_sulfate_free": true,
  "seller_type": "Authorized Dealer"
}
Claude Opus 4.6
2676ms100/100

All fields correct

✓brandOlaplex
✓product_nameHair Perfector No. 3
✓volume_ml100
✓volume_oz3.3
✓pack_quantity3
✓total_price_usd89.97
✓unit_price_usd29.99
✓is_sulfate_freetrue
✓seller_typeAuthorized Dealer
9/9 fields correct
Grok 4
13368ms100/100

All fields correct

✓brandOlaplex
✓product_nameHair Perfector No. 3
✓volume_ml100
✓volume_oz3.3
✓pack_quantity3
✓total_price_usd89.97
✓unit_price_usd29.99
✓is_sulfate_freetrue
✓seller_typeAuthorized Dealer
9/9 fields correct
Why this is hard: Must distinguish total_price_usd (89.97) from unit_price_usd (29.99). pack_quantity must be integer 3. volume must reflect SINGLE unit, not total. is_sulfate_free must be boolean.
04E-commerceJapanese Electronics with Voltage
88vs98★
Input
Sony WH-1000XM5 ワイヤレスノイズキャンセリングヘッドホン ブラック — Bluetooth 5.3 / LDAC — 30hr Battery — 100V-240V AC Adapter — JAN: 4548736132351 — Japan Domestic Model
Expected Output
{
  "brand": "Sony",
  "model": "WH-1000XM5",
  "type": "Wireless Noise Cancelling Headphones",
  "color": "Black",
  "bluetooth_version": "5.3",
  "audio_codec": "LDAC",
  "battery_hours": 30,
  "voltage_range": "100V-240V",
  "jan_code": "4548736132351",
  "region": "Japan Domestic"
}
Claude Opus 4.6
3117ms88/100

Incorrect/missing fields: type, color

✓brandSony
✓modelWH-1000XM5
✗typeワイヤレスノイズキャンセリングヘッドホン(expected: Wireless Noise Cancelling Headphones)
✗colorブラック(expected: Black)
✓bluetooth_version5.3
✓audio_codecLDAC
✓battery_hours30
✓voltage_range100V-240V
✓jan_code4548736132351
✓regionJapan
8/10 fields correct
Grok 4
11232ms98/100

All fields correct

✓brandSony
✓modelWH-1000XM5
✓typeWireless Noise Cancelling Headphones
✓colorBlack
✓bluetooth_version5.3
✓audio_codecLDAC
✓battery_hours30
✓voltage_range100V-240V
✓jan_code4548736132351
✓regionJapan
10/10 fields correct
Why this is hard: The Japanese text ワイヤレスノイズキャンセリングヘッドホン must be translated to 'Wireless Noise Cancelling Headphones'. Color 'ブラック' = 'Black'. battery_hours must be integer. jan_code must be string (not number — leading zeros matter).
05E-commerceJewelry with Carat vs Karat
100★vs100
Input
Tiffany & Co. Soleste Round Brilliant Diamond Engagement Ring — 1.52ct E/VVS2 — Platinum Setting with 18K Rose Gold Accent Band — GIA #2215847290 — Size 6.5 — Retail $42,800
Expected Output
{
  "brand": "Tiffany & Co.",
  "collection": "Soleste",
  "stone_type": "Round Brilliant Diamond",
  "carat_weight": 1.52,
  "color_grade": "E",
  "clarity_grade": "VVS2",
  "primary_metal": "Platinum",
  "accent_metal": "18K Rose Gold",
  "gia_report_number": "2215847290",
  "ring_size": 6.5,
  "retail_price_usd": 42800
}
Claude Opus 4.6
4043ms100/100

All fields correct

✓brandTiffany & Co.
✓collectionSoleste
✓stone_typeRound Brilliant Diamond
✓carat_weight1.52
✓color_gradeE
✓clarity_gradeVVS2
✓primary_metalPlatinum
✓accent_metal18K Rose Gold
✓gia_report_number2215847290
✓ring_size6.5
✓retail_price_usd42800
11/11 fields correct
Grok 4
15827ms100/100

All fields correct

✓brandTiffany & Co.
✓collectionSoleste
✓stone_typeRound Brilliant Diamond
✓carat_weight1.52
✓color_gradeE
✓clarity_gradeVVS2
✓primary_metalPlatinum
✓accent_metal18K Rose Gold
✓gia_report_number2215847290
✓ring_size6.5
✓retail_price_usd42800
11/11 fields correct
Why this is hard: carat_weight is gemstone weight (1.52ct), NOT gold purity. accent_metal includes '18K' (karat = gold purity). ring_size must be numeric 6.5, not string. gia_report_number is string. retail_price_usd is integer with no comma.
06LegalIndemnification Cap Extraction
84★vs81
Input
MASTER SERVICES AGREEMENT dated January 15, 2026. Section 8.2 (Limitation of Liability): Except for Vendor's indemnification obligations under Section 9.1 and breaches of Section 12 (Confidentiality), in no event shall either party's aggregate liability under this Agreement exceed the greater of (a) the total fees paid or payable by Client in the twelve (12) month period immediately preceding the event giving rise to the claim, or (b) Five Hundred Thousand Dollars ($500,000). Notwithstanding the foregoing, Vendor's aggregate liability for indemnification claims under Section 9.1 shall not exceed Two Million Dollars ($2,000,000). Section 8.3: IN NO EVENT SHALL EITHER PARTY BE LIABLE FOR ANY INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL, OR PUNITIVE DAMAGES, REGARDLESS OF THE CAUSE OF ACTION OR THEORY OF LIABILITY, EVEN IF SUCH PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. The foregoing limitation shall not apply to breaches of Section 12 (Confidentiality) or willful misconduct.
Expected Output
{
  "general_liability_cap": "$500,000",
  "general_liability_basis": "Greater of 12-month fees or $500,000",
  "indemnification_cap": "$2,000,000",
  "indemnification_section": "9.1",
  "consequential_damages_excluded": true,
  "consequential_damages_exceptions": [
    "Confidentiality breaches",
    "Willful misconduct"
  ],
  "liability_cap_exceptions": [
    "Indemnification under Section 9.1",
    "Confidentiality under Section 12"
  ]
}
Claude Opus 4.6
3894ms84/100

Incorrect/missing fields: general_liability_cap, general_liability_basis

✗general_liability_capThe greater of (a) total fees paid or payable by Client in the twelve (12) month period immediately preceding the event giving rise to the claim, or (b) Five Hundred Thousand Dollars ($500,000)(expected: $500,000)
✗general_liability_basisTrailing 12-month fees paid or payable, or $500,000 floor (whichever is greater)(expected: Greater of 12-month fees or $500,000)
✓indemnification_capTwo Million Dollars ($2,000,000)
✓indemnification_sectionSection 9.1
✓consequential_damages_excludedtrue
✓consequential_damages_exceptions["Breaches of Section 12 (Confidentiality)","Willful misconduct"]
✓liability_cap_exceptions["Vendor's indemnification obligations under Section 9.1","Breaches of Section 12 (Confidentiality)"]
5/7 fields correct
Grok 4
18407ms81/100

Incorrect/missing fields: general_liability_cap, general_liability_basis

✗general_liability_capthe greater of (a) the total fees paid or payable by Client in the twelve (12) month period immediately preceding the event giving rise to the claim, or (b) Five Hundred Thousand Dollars ($500,000)(expected: $500,000)
✗general_liability_basisaggregate(expected: Greater of 12-month fees or $500,000)
✓indemnification_capTwo Million Dollars ($2,000,000)
✓indemnification_section9.1
✓consequential_damages_excludedtrue
✓consequential_damages_exceptions["breaches of Section 12 (Confidentiality)","willful misconduct"]
✓liability_cap_exceptions["Vendor's indemnification obligations under Section 9.1","breaches of Section 12 (Confidentiality)"]
5/7 fields correct
Why this is hard: Must correctly distinguish the GENERAL liability cap ($500,000) from the INDEMNIFICATION cap ($2,000,000). Must identify both exceptions to the consequential damages waiver. Models often conflate the two caps or miss the 'notwithstanding' override.
07LegalTermination Clause Parsing
90vs91★
Input
Section 14 — TERMINATION. 14.1 Termination for Convenience: Either party may terminate this Agreement upon ninety (90) days' prior written notice to the other party. 14.2 Termination for Cause: Either party may terminate this Agreement immediately upon written notice if the other party: (a) materially breaches this Agreement and fails to cure such breach within thirty (30) days after receiving written notice; (b) becomes insolvent, files for bankruptcy under Title 11, or has a receiver appointed for substantially all of its assets; or (c) is acquired by a direct competitor of the non-breaching party ('Change of Control'). 14.3 Effect of Termination: Upon termination under 14.1, all prepaid but unused fees shall be refunded pro rata. Upon termination under 14.2(a), the breaching party shall forfeit any unused prepaid fees. Upon termination under 14.2(b) or 14.2(c), fees shall be handled in accordance with Section 7.4.
Expected Output
{
  "termination_for_convenience.notice_period_days": 90,
  "termination_for_convenience.available_to": "Either party",
  "termination_for_cause.triggers": [
    {
      "type": "Material breach",
      "cure_period_days": 30
    },
    {
      "type": "Insolvency/Bankruptcy",
      "cure_period_days": 0
    },
    {
      "type": "Change of Control",
      "cure_period_days": 0
    }
  ],
  "termination_effects.convenience": "Pro rata refund of prepaid unused fees",
  "termination_effects.cause_breach": "Breaching party forfeits unused prepaid fees",
  "termination_effects.cause_insolvency_or_change_of_control": "Per Section 7.4"
}
Claude Opus 4.6
3435ms90/100

Incorrect/missing fields: termination_effects.cause_insolvency_or_change_of_control

✓termination_for_convenience.notice_period_days90
✓termination_for_convenience.available_toEither party
✓termination_for_cause.triggers[{"type":"Material breach","cure_period_days":30},{"type":"Insolvency or bankruptcy","cure_period_days":0},{"type":"Change of Control (acquisition by direct competitor)","cure_period_days":0}]
✓termination_effects.convenienceAll prepaid but unused fees shall be refunded pro rata.
✓termination_effects.cause_breachThe breaching party shall forfeit any unused prepaid fees.
✗termination_effects.cause_insolvency_or_change_of_controlFees shall be handled in accordance with Section 7.4.(expected: Per Section 7.4)
5/6 fields correct
Grok 4
15221ms91/100

Incorrect/missing fields: termination_effects.cause_insolvency_or_change_of_control

✓termination_for_convenience.notice_period_days90
✓termination_for_convenience.available_toEither party
✓termination_for_cause.triggers[{"type":"material breach","cure_period_days":30},{"type":"insolvency","cure_period_days":0},{"type":"change of control","cure_period_days":0}]
✓termination_effects.convenienceall prepaid but unused fees shall be refunded pro rata
✓termination_effects.cause_breachthe breaching party shall forfeit any unused prepaid fees
✗termination_effects.cause_insolvency_or_change_of_controlfees shall be handled in accordance with Section 7.4(expected: Per Section 7.4)
5/6 fields correct
Why this is hard: Must correctly map each termination trigger to its cure period (only material breach has 30 days). Must distinguish fee treatment across all three termination scenarios. Insolvency and Change of Control have NO cure period (immediate).
08LegalIP Assignment vs License Distinction
84★vs84
Input
Section 6 — INTELLECTUAL PROPERTY. 6.1 Work Product: All deliverables, work product, and inventions conceived, created, or developed by Vendor in the performance of this Agreement ("Work Product") shall be considered "works made for hire" as defined by the U.S. Copyright Act. To the extent any Work Product does not qualify as a work made for hire, Vendor hereby irrevocably assigns to Client all right, title, and interest in and to such Work Product, including all intellectual property rights therein. 6.2 Pre-Existing IP: Notwithstanding Section 6.1, Vendor retains all right, title, and interest in and to any tools, frameworks, libraries, methodologies, and know-how that: (a) existed prior to this Agreement; (b) were developed independently outside the scope of this Agreement; or (c) are of general applicability and not specific to Client's business (collectively, "Pre-Existing IP"). To the extent any Pre-Existing IP is incorporated into the Work Product, Vendor grants Client a perpetual, irrevocable, worldwide, royalty-free, non-exclusive license to use, reproduce, and modify such Pre-Existing IP solely as embedded in the Work Product. 6.3 Residual Knowledge: Nothing in this Agreement shall restrict Vendor's right to use general skills, knowledge, experience, and ideas retained in the unaided memories of Vendor's personnel, provided such use does not infringe Client's patents or copyrights in the Work Product.
Expected Output
{
  "work_product_ownership": "Assigned to Client",
  "assignment_mechanism": "Work made for hire + irrevocable assignment fallback",
  "pre_existing_ip_ownership": "Retained by Vendor",
  "pre_existing_ip_categories": [
    "Prior tools/frameworks",
    "Independently developed",
    "General applicability"
  ],
  "pre_existing_ip_license_to_client.type": "Non-exclusive license",
  "pre_existing_ip_license_to_client.scope": "Use, reproduce, modify as embedded in Work Product",
  "pre_existing_ip_license_to_client.duration": "Perpetual",
  "pre_existing_ip_license_to_client.royalty": "Royalty-free",
  "pre_existing_ip_license_to_client.territory": "Worldwide",
  "residual_knowledge_clause": true,
  "residual_knowledge_limitation": "Must not infringe Client's patents or copyrights"
}
Claude Opus 4.6
4862ms84/100

Incorrect/missing fields: pre_existing_ip_categories, work_product_ownership, pre_existing_ip_ownership, pre_existing_ip_license_to_client.duration, residual_knowledge_limitation

✗work_product_ownershipClient(expected: Assigned to Client)
✓assignment_mechanismWorks made for hire under U.S. Copyright Act, with irrevocable assignment of all right, title, and interest as a fallback for any Work Product that does not qualify as work made for hire
✗pre_existing_ip_ownershipVendor(expected: Retained by Vendor)
✗pre_existing_ip_categories["Tools","Frameworks","Libraries","Methodologies","Know-how existing prior to the Agreement","Materials developed independently outside the scope of the Agreement","Materials of general applicability not specific to Client's business"](expected: ["Prior tools/frameworks","Independently developed","General applicability"])
✓pre_existing_ip_license_to_client.typeNon-exclusive
✓pre_existing_ip_license_to_client.scopeUse, reproduce, and modify Pre-Existing IP solely as embedded in the Work Product
✗pre_existing_ip_license_to_client.durationPerpetual and irrevocable(expected: Perpetual)
✓pre_existing_ip_license_to_client.royaltyRoyalty-free
✓pre_existing_ip_license_to_client.territoryWorldwide
✓residual_knowledge_clausetrue
✗residual_knowledge_limitationUse must not infringe Client's patents or copyrights in the Work Product; limited to general skills, knowledge, experience, and ideas retained in the unaided memories of Vendor's personnel(expected: Must not infringe Client's patents or copyrights)
6/11 fields correct
Grok 4
30917ms84/100

Incorrect/missing fields: pre_existing_ip_categories, work_product_ownership, pre_existing_ip_ownership, pre_existing_ip_license_to_client.type, residual_knowledge_limitation

✗work_product_ownershipClient(expected: Assigned to Client)
✓assignment_mechanismworks made for hire with irrevocable assignment fallback
✗pre_existing_ip_ownershipVendor(expected: Retained by Vendor)
✗pre_existing_ip_categories["existed prior to this Agreement","were developed independently outside the scope of this Agreement","are of general applicability and not specific to Client's business"](expected: ["Prior tools/frameworks","Independently developed","General applicability"])
✗pre_existing_ip_license_to_client.typenon-exclusive(expected: Non-exclusive license)
✓pre_existing_ip_license_to_client.scopeuse, reproduce, and modify solely as embedded in the Work Product
✓pre_existing_ip_license_to_client.durationperpetual, irrevocable
✓pre_existing_ip_license_to_client.royaltyroyalty-free
✓pre_existing_ip_license_to_client.territoryworldwide
✓residual_knowledge_clausetrue
✗residual_knowledge_limitationprovided such use does not infringe Client's patents or copyrights in the Work Product(expected: Must not infringe Client's patents or copyrights)
6/11 fields correct
Why this is hard: Must distinguish IP assignment (Work Product → Client) from IP licensing (Pre-Existing IP → non-exclusive license). Must capture all three categories of Pre-Existing IP. Residual knowledge clause is a separate carve-out. Models often incorrectly say ALL IP is assigned.
09LegalForce Majeure Scope Extraction
95★vs95
Input
Section 15 — FORCE MAJEURE. 15.1 Neither party shall be liable for any failure or delay in performing its obligations under this Agreement (other than payment obligations, which shall not be excused) where such failure or delay results from Force Majeure Events including, but not limited to: acts of God, fire, flood, earthquake, epidemic, pandemic, war, terrorism, civil unrest, government sanctions, embargoes, strikes or labor disputes (excluding those involving a party's own employees), power grid failures, or internet backbone outages. 15.2 The affected party must provide written notice within five (5) business days of the Force Majeure Event's commencement, including a reasonable estimate of the expected duration. The affected party shall use commercially reasonable efforts to mitigate the impact. 15.3 If a Force Majeure Event continues for more than one hundred and twenty (120) consecutive calendar days, either party may terminate this Agreement upon written notice without penalty.
Expected Output
{
  "payment_obligations_excused": false,
  "notice_period_business_days": 5,
  "notice_requirements": [
    "Written notice",
    "Reasonable duration estimate"
  ],
  "mitigation_standard": "Commercially reasonable efforts",
  "termination_threshold_days": 120,
  "termination_penalty": false,
  "excluded_events": [
    "Strikes involving own employees"
  ],
  "included_events": [
    "Acts of God",
    "Fire",
    "Flood",
    "Earthquake",
    "Epidemic",
    "Pandemic",
    "War",
    "Terrorism",
    "Civil unrest",
    "Government sanctions",
    "Embargoes",
    "Strikes/labor disputes",
    "Power grid failures",
    "Internet backbone outages"
  ]
}
Claude Opus 4.6
4040ms95/100

Incorrect/missing fields: notice_requirements

✓payment_obligations_excusedfalse
✓notice_period_business_days5
✗notice_requirements["Written notice within five (5) business days of the Force Majeure Event's commencement","Must include a reasonable estimate of the expected duration"](expected: ["Written notice","Reasonable duration estimate"])
✓mitigation_standardcommercially reasonable efforts
✓termination_threshold_days120
✓termination_penaltyfalse
✓excluded_events["Strikes or labor disputes involving a party's own employees","Payment obligations"]
✓included_events["Acts of God","Fire","Flood","Earthquake","Epidemic","Pandemic","War","Terrorism","Civil unrest","Government sanctions","Embargoes","Strikes or labor disputes (excluding those involving a party's own employees)","Power grid failures","Internet backbone outages"]
7/8 fields correct
Grok 4
21603ms95/100

All fields correct

✓payment_obligations_excusedfalse
✓notice_period_business_days5
✓notice_requirements["written","reasonable estimate of expected duration"]
✓mitigation_standardcommercially reasonable efforts
✓termination_threshold_days120
✓termination_penaltyfalse
✓excluded_events["strikes or labor disputes involving a party's own employees"]
✓included_events["acts of God","fire","flood","earthquake","epidemic","pandemic","war","terrorism","civil unrest","government sanctions","embargoes","strikes or labor disputes (excluding those involving a party's own employees)","power grid failures","internet backbone outages"]
8/8 fields correct
Why this is hard: Critical: payment_obligations_excused must be FALSE. The key exclusion (own-employee strikes) is often missed. notice_period must be 5 BUSINESS days (not calendar). termination_threshold is 120 CALENDAR days.
10LegalNon-Compete Geographic Scope
92★vs92
Input
Section 11 — RESTRICTIVE COVENANTS. 11.1 Non-Competition: For a period of eighteen (18) months following termination of employment for any reason, Employee shall not, directly or indirectly, engage in, own, manage, operate, consult for, or be employed by any Competing Business within the Restricted Territory. "Competing Business" means any entity that derives more than twenty percent (20%) of its annual revenue from products or services substantially similar to those offered by Company. "Restricted Territory" means the United States, the United Kingdom, and any country in which Company generated more than $5,000,000 in revenue during the twelve (12) months preceding termination. 11.2 Non-Solicitation of Employees: For a period of twenty-four (24) months following termination, Employee shall not recruit, solicit, or induce any person employed by Company (or who was employed within the six (6) months preceding such solicitation). 11.3 Non-Solicitation of Customers: For a period of twelve (12) months following termination, Employee shall not solicit any customer or prospective customer with whom Employee had material contact during the last twenty-four (24) months of employment. 11.4 Non-Disparagement: For a period of thirty-six (36) months following termination, Employee shall not make any public statements that disparage or defame Company, its officers, directors, or products. This obligation is mutual — Company shall instruct its officers and directors to refrain from disparaging Employee.
Expected Output
{
  "non_compete.duration_months": 18,
  "non_compete.scope": "Engage, own, manage, operate, consult, or be employed",
  "non_compete.competing_business_threshold": "20% of annual revenue from similar products/services",
  "non_compete.restricted_territory": [
    "United States",
    "United Kingdom",
    "Countries with >$5M Company revenue in prior 12 months"
  ],
  "non_solicitation_employees.duration_months": 24,
  "non_solicitation_employees.lookback_months": 6,
  "non_solicitation_customers.duration_months": 12,
  "non_solicitation_customers.contact_lookback_months": 24,
  "non_disparagement.duration_months": 36,
  "non_disparagement.is_mutual": true,
  "non_disparagement.company_scope": "Officers and directors"
}
Claude Opus 4.6
3693ms92/100

Incorrect/missing fields: non_compete.scope, non_disparagement.company_scope

✓non_compete.duration_months18
✗non_compete.scopeEmployee shall not, directly or indirectly, engage in, own, manage, operate, consult for, or be employed by any Competing Business within the Restricted Territory(expected: Engage, own, manage, operate, consult, or be employed)
✓non_compete.competing_business_thresholdMore than 20% of annual revenue from products or services substantially similar to those offered by Company
✓non_compete.restricted_territory["United States","United Kingdom","Any country in which Company generated more than $5,000,000 in revenue during the twelve (12) months preceding termination"]
✓non_solicitation_employees.duration_months24
✓non_solicitation_employees.lookback_months6
✓non_solicitation_customers.duration_months12
✓non_solicitation_customers.contact_lookback_months24
✓non_disparagement.duration_months36
✓non_disparagement.is_mutualtrue
✗non_disparagement.company_scopeCompany, its officers, directors, or products(expected: Officers and directors)
9/11 fields correct
Grok 4
40374ms92/100

Incorrect/missing fields: non_compete.scope, non_disparagement.company_scope

✓non_compete.duration_months18
✗non_compete.scopedirectly or indirectly, engage in, own, manage, operate, consult for, or be employed by any Competing Business(expected: Engage, own, manage, operate, consult, or be employed)
✓non_compete.competing_business_thresholdderives more than twenty percent (20%) of its annual revenue from products or services substantially similar to those offered by Company
✓non_compete.restricted_territory["United States","United Kingdom","any country in which Company generated more than $5,000,000 in revenue during the twelve (12) months preceding termination"]
✓non_solicitation_employees.duration_months24
✓non_solicitation_employees.lookback_months6
✓non_solicitation_customers.duration_months12
✓non_solicitation_customers.contact_lookback_months24
✓non_disparagement.duration_months36
✓non_disparagement.is_mutualtrue
✗non_disparagement.company_scopeCompany, its officers, directors, or products(expected: Officers and directors)
9/11 fields correct
Why this is hard: Each covenant has a DIFFERENT duration (18/24/12/36 months). Models frequently assign a single duration to all. The geographic scope has a dynamic '$5M revenue' threshold — not just static countries. Non-disparagement is MUTUAL. Non-solicitation of employees has a 6-month lookback.
11MedicalAcute vs Chronic Symptom Classification
92★vs89
Input
Patient: Female, 67yo, presents to ED with acute onset chest pain (started 2 hours ago, 8/10 severity, substernal, radiating to left arm), on a background of chronic stable angina (diagnosed 2019, managed with isosorbide mononitrate 60mg QD). History of Type 2 DM (HbA1c 7.2%, on metformin 1000mg BID + empagliflozin 25mg QD), hypertension (BP 168/94 on arrival, home meds: amlodipine 10mg + lisinopril 40mg), and previous NSTEMI (March 2023). Allergies: Aspirin (urticaria), Atorvastatin (myalgia — switched to rosuvastatin 20mg). Current vitals: HR 96 bpm, RR 22, SpO2 94% on RA, Temp 36.8°C.
Expected Output
{
  "demographics.sex": "Female",
  "demographics.age": 67,
  "chief_complaint": "Acute onset chest pain",
  "presenting_symptoms": [
    {
      "symptom": "Chest pain",
      "onset": "Acute",
      "duration": "2 hours",
      "severity": "8/10",
      "location": "Substernal",
      "radiation": "Left arm"
    }
  ],
  "chronic_conditions": [
    {
      "condition": "Chronic stable angina",
      "diagnosed": "2019",
      "status": "Managed"
    },
    {
      "condition": "Type 2 Diabetes Mellitus",
      "marker": "HbA1c 7.2%"
    },
    {
      "condition": "Hypertension",
      "current_bp": "168/94"
    },
    {
      "condition": "Previous NSTEMI",
      "date": "March 2023"
    }
  ],
  "medications": [
    {
      "name": "Isosorbide mononitrate",
      "dose": "60mg",
      "frequency": "QD",
      "indication": "Angina"
    },
    {
      "name": "Metformin",
      "dose": "1000mg",
      "frequency": "BID",
      "indication": "Diabetes"
    },
    {
      "name": "Empagliflozin",
      "dose": "25mg",
      "frequency": "QD",
      "indication": "Diabetes"
    },
    {
      "name": "Amlodipine",
      "dose": "10mg",
      "frequency": "QD",
      "indication": "Hypertension"
    },
    {
      "name": "Lisinopril",
      "dose": "40mg",
      "frequency": "QD",
      "indication": "Hypertension"
    },
    {
      "name": "Rosuvastatin",
      "dose": "20mg",
      "frequency": "QD",
      "indication": "Cholesterol"
    }
  ],
  "allergies": [
    {
      "drug": "Aspirin",
      "reaction": "Urticaria"
    },
    {
      "drug": "Atorvastatin",
      "reaction": "Myalgia",
      "note": "Switched to rosuvastatin"
    }
  ],
  "vitals.hr_bpm": 96,
  "vitals.rr": 22,
  "vitals.spo2_percent": 94,
  "vitals.temp_celsius": 36.8
}
Claude Opus 4.6
8686ms92/100

Incorrect/missing fields: chronic_conditions

✓demographics.sexFemale
✓demographics.age67
✓chief_complaintAcute onset chest pain
✓presenting_symptoms[{"symptom":"Chest pain","onset":"2 hours ago","duration":"2 hours","severity":"8/10","location":"Substernal","radiation":"Left arm"}]
✗chronic_conditions[{"condition":"Chronic stable angina","diagnosed":"2019","status":"Managed with isosorbide mononitrate"},{"condition":"Type 2 Diabetes Mellitus","diagnosed":"Unknown","status":"HbA1c 7.2%, managed with metformin and empagliflozin"},{"condition":"Hypertension","diagnosed":"Unknown","status":"BP 168/94 on arrival, on amlodipine and lisinopril"},{"condition":"Previous NSTEMI","diagnosed":"March 2023","status":"History of prior event"}](expected: [{"condition":"Chronic stable angina","diagnosed":"2019","status":"Managed"},{"condition":"Type 2 Diabetes Mellitus","marker":"HbA1c 7.2%"},{"condition":"Hypertension","current_bp":"168/94"},{"condition":"Previous NSTEMI","date":"March 2023"}])
✓medications[{"name":"Isosorbide mononitrate","dose":"60mg","frequency":"QD","indication":"Chronic stable angina"},{"name":"Metformin","dose":"1000mg","frequency":"BID","indication":"Type 2 Diabetes Mellitus"},{"name":"Empagliflozin","dose":"25mg","frequency":"QD","indication":"Type 2 Diabetes Mellitus"},{"name":"Amlodipine","dose":"10mg","frequency":"QD","indication":"Hypertension"},{"name":"Lisinopril","dose":"40mg","frequency":"QD","indication":"Hypertension"},{"name":"Rosuvastatin","dose":"20mg","frequency":"QD","indication":"Hyperlipidemia (switched from atorvastatin)"}]
✓allergies[{"drug":"Aspirin","reaction":"Urticaria"},{"drug":"Atorvastatin","reaction":"Myalgia"}]
✓vitals.hr_bpm96
✓vitals.rr22
✓vitals.spo2_percent94
✓vitals.temp_celsius36.8
10/11 fields correct
Grok 4
46307ms89/100

Incorrect/missing fields: chronic_conditions, chief_complaint

✓demographics.sexFemale
✓demographics.age67
✗chief_complaintchest pain(expected: Acute onset chest pain)
✓presenting_symptoms[{"symptom":"chest pain","onset":"started 2 hours ago","duration":"2 hours","severity":"8/10","location":"substernal","radiation":"to left arm"}]
✗chronic_conditions[{"condition":"chronic stable angina","diagnosed":"2019","status":"stable"},{"condition":"Type 2 diabetes mellitus","diagnosed":"unknown","status":"managed"},{"condition":"hypertension","diagnosed":"unknown","status":"managed"},{"condition":"NSTEMI","diagnosed":"March 2023","status":"previous"}](expected: [{"condition":"Chronic stable angina","diagnosed":"2019","status":"Managed"},{"condition":"Type 2 Diabetes Mellitus","marker":"HbA1c 7.2%"},{"condition":"Hypertension","current_bp":"168/94"},{"condition":"Previous NSTEMI","date":"March 2023"}])
✓medications[{"name":"isosorbide mononitrate","dose":"60mg","frequency":"QD","indication":"angina"},{"name":"metformin","dose":"1000mg","frequency":"BID","indication":"Type 2 diabetes mellitus"},{"name":"empagliflozin","dose":"25mg","frequency":"QD","indication":"Type 2 diabetes mellitus"},{"name":"amlodipine","dose":"10mg","frequency":"QD","indication":"hypertension"},{"name":"lisinopril","dose":"40mg","frequency":"QD","indication":"hypertension"},{"name":"rosuvastatin","dose":"20mg","frequency":"QD","indication":"dyslipidemia"}]
✓allergies[{"drug":"Aspirin","reaction":"urticaria"},{"drug":"Atorvastatin","reaction":"myalgia"}]
✓vitals.hr_bpm96
✓vitals.rr22
✓vitals.spo2_percent94
✓vitals.temp_celsius36.8
9/11 fields correct
Why this is hard: Chest pain is ACUTE (2 hours), angina is CHRONIC (2019). Models must not merge these. All 6 medications must be extracted with correct frequency. Atorvastatin is an ALLERGY not a current medication. Rosuvastatin is the replacement. Vitals must be numeric.
12MedicalLab Results with Reference Ranges
63★vs60
Input
COMPREHENSIVE METABOLIC PANEL — Collected: 02/15/2026 07:30. Glucose: 187 mg/dL (ref: 70-100, FLAG: HIGH). BUN: 42 mg/dL (ref: 7-20, FLAG: HIGH). Creatinine: 2.1 mg/dL (ref: 0.7-1.3, FLAG: HIGH). eGFR: 28 mL/min/1.73m² (ref: >60, FLAG: LOW — Stage 4 CKD). Sodium: 138 mEq/L (ref: 136-145). Potassium: 5.6 mEq/L (ref: 3.5-5.0, FLAG: HIGH — CRITICAL). Chloride: 102 mEq/L (ref: 98-106). CO2: 19 mEq/L (ref: 23-29, FLAG: LOW). Calcium: 8.2 mg/dL (ref: 8.5-10.5, FLAG: LOW). Total Protein: 6.8 g/dL (ref: 6.0-8.3). Albumin: 3.1 g/dL (ref: 3.5-5.5, FLAG: LOW). Bilirubin, Total: 0.9 mg/dL (ref: 0.1-1.2). ALT: 24 U/L (ref: 7-56). AST: 31 U/L (ref: 10-40). Alk Phos: 98 U/L (ref: 44-147).
Expected Output
{
  "panel_type": "Comprehensive Metabolic Panel",
  "collected": "2026-02-15T07:30",
  "results": [
    {
      "test": "Glucose",
      "value": 187,
      "unit": "mg/dL",
      "ref_low": 70,
      "ref_high": 100,
      "flag": "HIGH"
    },
    {
      "test": "BUN",
      "value": 42,
      "unit": "mg/dL",
      "ref_low": 7,
      "ref_high": 20,
      "flag": "HIGH"
    },
    {
      "test": "Creatinine",
      "value": 2.1,
      "unit": "mg/dL",
      "ref_low": 0.7,
      "ref_high": 1.3,
      "flag": "HIGH"
    },
    {
      "test": "eGFR",
      "value": 28,
      "unit": "mL/min/1.73m²",
      "ref_low": 60,
      "ref_high": null,
      "flag": "LOW",
      "note": "Stage 4 CKD"
    },
    {
      "test": "Sodium",
      "value": 138,
      "unit": "mEq/L",
      "ref_low": 136,
      "ref_high": 145,
      "flag": null
    },
    {
      "test": "Potassium",
      "value": 5.6,
      "unit": "mEq/L",
      "ref_low": 3.5,
      "ref_high": 5,
      "flag": "HIGH",
      "critical": true
    },
    {
      "test": "Chloride",
      "value": 102,
      "unit": "mEq/L",
      "ref_low": 98,
      "ref_high": 106,
      "flag": null
    },
    {
      "test": "CO2",
      "value": 19,
      "unit": "mEq/L",
      "ref_low": 23,
      "ref_high": 29,
      "flag": "LOW"
    },
    {
      "test": "Calcium",
      "value": 8.2,
      "unit": "mg/dL",
      "ref_low": 8.5,
      "ref_high": 10.5,
      "flag": "LOW"
    },
    {
      "test": "Total Protein",
      "value": 6.8,
      "unit": "g/dL",
      "ref_low": 6,
      "ref_high": 8.3,
      "flag": null
    },
    {
      "test": "Albumin",
      "value": 3.1,
      "unit": "g/dL",
      "ref_low": 3.5,
      "ref_high": 5.5,
      "flag": "LOW"
    },
    {
      "test": "Bilirubin Total",
      "value": 0.9,
      "unit": "mg/dL",
      "ref_low": 0.1,
      "ref_high": 1.2,
      "flag": null
    },
    {
      "test": "ALT",
      "value": 24,
      "unit": "U/L",
      "ref_low": 7,
      "ref_high": 56,
      "flag": null
    },
    {
      "test": "AST",
      "value": 31,
      "unit": "U/L",
      "ref_low": 10,
      "ref_high": 40,
      "flag": null
    },
    {
      "test": "Alk Phos",
      "value": 98,
      "unit": "U/L",
      "ref_low": 44,
      "ref_high": 147,
      "flag": null
    }
  ],
  "critical_values": [
    "Potassium 5.6 mEq/L"
  ],
  "abnormal_count": 7,
  "normal_count": 8
}
Claude Opus 4.6
7472ms63/100

Incorrect/missing fields: abnormal_count, normal_count

✓panel_typeComprehensive Metabolic Panel
✓collected02/15/2026 07:30
✓results[{"test":"Glucose","value":187,"unit":"mg/dL","ref_low":70,"ref_high":100,"flag":"HIGH"},{"test":"BUN","value":42,"unit":"mg/dL","ref_low":7,"ref_high":20,"flag":"HIGH"},{"test":"Creatinine","value":2.1,"unit":"mg/dL","ref_low":0.7,"ref_high":1.3,"flag":"HIGH"},{"test":"eGFR","value":28,"unit":"mL/min/1.73m²","ref_low":60,"ref_high":9999,"flag":"LOW"},{"test":"Sodium","value":138,"unit":"mEq/L","ref_low":136,"ref_high":145,"flag":"NORMAL"},{"test":"Potassium","value":5.6,"unit":"mEq/L","ref_low":3.5,"ref_high":5,"flag":"HIGH"},{"test":"Chloride","value":102,"unit":"mEq/L","ref_low":98,"ref_high":106,"flag":"NORMAL"},{"test":"CO2","value":19,"unit":"mEq/L","ref_low":23,"ref_high":29,"flag":"LOW"},{"test":"Calcium","value":8.2,"unit":"mg/dL","ref_low":8.5,"ref_high":10.5,"flag":"LOW"},{"test":"Total Protein","value":6.8,"unit":"g/dL","ref_low":6,"ref_high":8.3,"flag":"NORMAL"},{"test":"Albumin","value":3.1,"unit":"g/dL","ref_low":3.5,"ref_high":5.5,"flag":"LOW"},{"test":"Bilirubin, Total","value":0.9,"unit":"mg/dL","ref_low":0.1,"ref_high":1.2,"flag":"NORMAL"},{"test":"ALT","value":24,"unit":"U/L","ref_low":7,"ref_high":56,"flag":"NORMAL"},{"test":"AST","value":31,"unit":"U/L","ref_low":10,"ref_high":40,"flag":"NORMAL"},{"test":"Alk Phos","value":98,"unit":"U/L","ref_low":44,"ref_high":147,"flag":"NORMAL"}]
✓critical_values["Potassium: 5.6 mEq/L (CRITICAL HIGH)"]
✗abnormal_count8(expected: 7)
✗normal_count7(expected: 8)
4/6 fields correct
Grok 4
122080ms60/100

Incorrect/missing fields: abnormal_count, normal_count, critical_values

✓panel_typeCOMPREHENSIVE METABOLIC PANEL
✓collected02/15/2026 07:30
✓results[{"test":"Glucose","value":187,"unit":"mg/dL","ref_low":70,"ref_high":100,"flag":"HIGH"},{"test":"BUN","value":42,"unit":"mg/dL","ref_low":7,"ref_high":20,"flag":"HIGH"},{"test":"Creatinine","value":2.1,"unit":"mg/dL","ref_low":0.7,"ref_high":1.3,"flag":"HIGH"},{"test":"eGFR","value":28,"unit":"mL/min/1.73m²","ref_low":60,"ref_high":999,"flag":"LOW - Stage 4 CKD"},{"test":"Sodium","value":138,"unit":"mEq/L","ref_low":136,"ref_high":145,"flag":""},{"test":"Potassium","value":5.6,"unit":"mEq/L","ref_low":3.5,"ref_high":5,"flag":"HIGH - CRITICAL"},{"test":"Chloride","value":102,"unit":"mEq/L","ref_low":98,"ref_high":106,"flag":""},{"test":"CO2","value":19,"unit":"mEq/L","ref_low":23,"ref_high":29,"flag":"LOW"},{"test":"Calcium","value":8.2,"unit":"mg/dL","ref_low":8.5,"ref_high":10.5,"flag":"LOW"},{"test":"Total Protein","value":6.8,"unit":"g/dL","ref_low":6,"ref_high":8.3,"flag":""},{"test":"Albumin","value":3.1,"unit":"g/dL","ref_low":3.5,"ref_high":5.5,"flag":"LOW"},{"test":"Bilirubin, Total","value":0.9,"unit":"mg/dL","ref_low":0.1,"ref_high":1.2,"flag":""},{"test":"ALT","value":24,"unit":"U/L","ref_low":7,"ref_high":56,"flag":""},{"test":"AST","value":31,"unit":"U/L","ref_low":10,"ref_high":40,"flag":""},{"test":"Alk Phos","value":98,"unit":"U/L","ref_low":44,"ref_high":147,"flag":""}]
✗critical_values["Potassium"](expected: ["Potassium 5.6 mEq/L"])
✗abnormal_count8(expected: 7)
✗normal_count7(expected: 8)
3/6 fields correct
Why this is hard: All 15 lab tests must be extracted. Potassium must be flagged as CRITICAL (not just HIGH). eGFR has a one-sided reference range (>60) — ref_high should be null. Numeric values must be numbers, not strings. Count of abnormal (7) and normal (8) must sum to 15.
13MedicalMedication Reconciliation with Conflicts
60vs65★
Input
MEDICATION RECONCILIATION — Inpatient Day 3. Current Orders: (1) Warfarin 5mg PO QD (for AFib — INR target 2.0-3.0, last INR 2.4 on 02/13). (2) Metoprolol Succinate 100mg PO QD. (3) Diltiazem ER 240mg PO QD. (4) Amiodarone 200mg PO QD (started 02/12 for rate-refractory AFib). (5) Fluconazole 400mg IV QD (Day 5 of 14 for candidemia). (6) Enoxaparin 80mg SQ Q12H (DVT prophylaxis — started before warfarin was therapeutic). (7) Acetaminophen 1000mg PO Q6H PRN. (8) Omeprazole 40mg PO QD. Home Medications NOT continued: Aspirin 81mg QD (held due to warfarin + enoxaparin = triple antithrombotic risk).
Expected Output
{
  "active_medications": [
    {
      "name": "Warfarin",
      "dose": "5mg",
      "route": "PO",
      "frequency": "QD",
      "indication": "AFib"
    },
    {
      "name": "Metoprolol Succinate",
      "dose": "100mg",
      "route": "PO",
      "frequency": "QD"
    },
    {
      "name": "Diltiazem ER",
      "dose": "240mg",
      "route": "PO",
      "frequency": "QD"
    },
    {
      "name": "Amiodarone",
      "dose": "200mg",
      "route": "PO",
      "frequency": "QD",
      "indication": "Rate-refractory AFib",
      "start_date": "02/12"
    },
    {
      "name": "Fluconazole",
      "dose": "400mg",
      "route": "IV",
      "frequency": "QD",
      "indication": "Candidemia",
      "day": 5,
      "total_days": 14
    },
    {
      "name": "Enoxaparin",
      "dose": "80mg",
      "route": "SQ",
      "frequency": "Q12H",
      "indication": "DVT prophylaxis"
    },
    {
      "name": "Acetaminophen",
      "dose": "1000mg",
      "route": "PO",
      "frequency": "Q6H",
      "prn": true
    },
    {
      "name": "Omeprazole",
      "dose": "40mg",
      "route": "PO",
      "frequency": "QD"
    }
  ],
  "held_medications": [
    {
      "name": "Aspirin",
      "dose": "81mg",
      "reason": "Triple antithrombotic risk with warfarin + enoxaparin"
    }
  ],
  "potential_interactions": [
    {
      "drugs": [
        "Warfarin",
        "Fluconazole"
      ],
      "severity": "Major",
      "effect": "Fluconazole inhibits CYP2C9, significantly increasing warfarin levels and bleeding risk"
    },
    {
      "drugs": [
        "Warfarin",
        "Amiodarone"
      ],
      "severity": "Major",
      "effect": "Amiodarone inhibits CYP2C9/1A2/3A4, increasing warfarin effect — typical dose reduction 30-50%"
    },
    {
      "drugs": [
        "Metoprolol",
        "Diltiazem"
      ],
      "severity": "Major",
      "effect": "Additive AV nodal blockade — risk of severe bradycardia or heart block"
    },
    {
      "drugs": [
        "Warfarin",
        "Enoxaparin"
      ],
      "severity": "High",
      "effect": "Dual anticoagulation increases bleeding risk"
    }
  ],
  "therapeutic_duplications": [
    {
      "category": "Rate control",
      "drugs": [
        "Metoprolol",
        "Diltiazem",
        "Amiodarone"
      ],
      "note": "Triple rate control — assess need for all three"
    }
  ]
}
Claude Opus 4.6
17314ms60/100

Incorrect/missing fields: potential_interactions, therapeutic_duplications

✓active_medications[{"name":"Warfarin","dose":"5mg","route":"PO","frequency":"QD","indication":"Atrial fibrillation (INR target 2.0-3.0, last INR 2.4 on 02/13)"},{"name":"Metoprolol Succinate","dose":"100mg","route":"PO","frequency":"QD","indication":"Rate control for atrial fibrillation"},{"name":"Diltiazem ER","dose":"240mg","route":"PO","frequency":"QD","indication":"Rate control for atrial fibrillation"},{"name":"Amiodarone","dose":"200mg","route":"PO","frequency":"QD","indication":"Rate-refractory atrial fibrillation (started 02/12)"},{"name":"Fluconazole","dose":"400mg","route":"IV","frequency":"QD","indication":"Candidemia (Day 5 of 14)"},{"name":"Enoxaparin","dose":"80mg","route":"SQ","frequency":"Q12H","indication":"DVT prophylaxis (bridging - started before warfarin was therapeutic)"},{"name":"Acetaminophen","dose":"1000mg","route":"PO","frequency":"Q6H PRN","indication":"Pain/fever management"},{"name":"Omeprazole","dose":"40mg","route":"PO","frequency":"QD","indication":"Gastric acid suppression/GI prophylaxis"}]
✓held_medications[{"name":"Aspirin","dose":"81mg","reason":"Held due to concurrent warfarin + enoxaparin creating triple antithrombotic risk with excessive bleeding concern"}]
✗potential_interactions[{"drugs":["Fluconazole","Warfarin"],"severity":"Major","effect":"Fluconazole is a potent CYP2C9 inhibitor and significantly increases warfarin levels, raising INR and risk of serious bleeding. Requires close INR monitoring and likely warfarin dose reduction."},{"drugs":["Amiodarone","Warfarin"],"severity":"Major","effect":"Amiodarone inhibits CYP2C9 and CYP3A4, significantly increasing warfarin effect and INR. Combined with fluconazole, this creates compounded risk of supratherapeutic INR. Warfarin dose reduction of 30-50% typically recommended."},{"drugs":["Warfarin","Enoxaparin"],"severity":"Major","effect":"Concurrent use of two anticoagulants substantially increases bleeding risk. Enoxaparin should be discontinued once INR is consistently therapeutic (2.0-3.0)."},{"drugs":["Metoprolol","Diltiazem"],"severity":"Major","effect":"Both are AV nodal blocking agents. Combined use increases risk of severe bradycardia, heart block, and hypotension. Requires close cardiac monitoring."},{"drugs":["Amiodarone","Metoprolol"],"severity":"Moderate","effect":"Amiodarone added to metoprolol increases risk of bradycardia, AV block, and hemodynamic compromise due to additive negative chronotropic and dromotropic effects."},{"drugs":["Amiodarone","Diltiazem"],"severity":"Moderate","effect":"Both agents slow AV nodal conduction; combined use increases risk of bradycardia and AV block."},{"drugs":["Omeprazole","Warfarin"],"severity":"Moderate","effect":"Omeprazole may inhibit CYP2C19 and potentially increase warfarin levels, though clinical significance is variable. Monitor INR."},{"drugs":["Amiodarone","Fluconazole"],"severity":"Moderate","effect":"Both drugs can prolong the QT interval; concurrent use increases the risk of QT prolongation and torsades de pointes. ECG monitoring recommended."}](expected: [{"drugs":["Warfarin","Fluconazole"],"severity":"Major","effect":"Fluconazole inhibits CYP2C9, significantly increasing warfarin levels and bleeding risk"},{"drugs":["Warfarin","Amiodarone"],"severity":"Major","effect":"Amiodarone inhibits CYP2C9/1A2/3A4, increasing warfarin effect — typical dose reduction 30-50%"},{"drugs":["Metoprolol","Diltiazem"],"severity":"Major","effect":"Additive AV nodal blockade — risk of severe bradycardia or heart block"},{"drugs":["Warfarin","Enoxaparin"],"severity":"High","effect":"Dual anticoagulation increases bleeding risk"}])
✗therapeutic_duplications[{"category":"AV Nodal Blocking Agents / Rate Control","drugs":["Metoprolol Succinate","Diltiazem ER","Amiodarone"],"note":"Three agents with AV nodal blocking and rate-controlling properties are prescribed concurrently. This significantly increases the risk of severe bradycardia and heart block. Consider whether all three are necessary or if one can be tapered/discontinued."},{"category":"Anticoagulants","drugs":["Warfarin","Enoxaparin"],"note":"Two anticoagulants are active simultaneously. Enoxaparin was started as bridging therapy before warfarin reached therapeutic INR (last INR 2.4 is now in range). Assess for discontinuation of enoxaparin if INR remains consistently therapeutic."}](expected: [{"category":"Rate control","drugs":["Metoprolol","Diltiazem","Amiodarone"],"note":"Triple rate control — assess need for all three"}])
2/4 fields correct
Grok 4
57305ms65/100

Incorrect/missing fields: potential_interactions, therapeutic_duplications

✓active_medications[{"name":"Warfarin","dose":"5mg","route":"PO","frequency":"QD","indication":"for AFib"},{"name":"Metoprolol Succinate","dose":"100mg","route":"PO","frequency":"QD","indication":"for AFib rate control"},{"name":"Diltiazem ER","dose":"240mg","route":"PO","frequency":"QD","indication":"for AFib rate control"},{"name":"Amiodarone","dose":"200mg","route":"PO","frequency":"QD","indication":"for rate-refractory AFib"},{"name":"Fluconazole","dose":"400mg","route":"IV","frequency":"QD","indication":"for candidemia"},{"name":"Enoxaparin","dose":"80mg","route":"SQ","frequency":"Q12H","indication":"DVT prophylaxis"},{"name":"Acetaminophen","dose":"1000mg","route":"PO","frequency":"Q6H PRN","indication":"pain or fever"},{"name":"Omeprazole","dose":"40mg","route":"PO","frequency":"QD","indication":"acid suppression"}]
✓held_medications[{"name":"Aspirin","dose":"81mg","reason":"held due to warfarin + enoxaparin = triple antithrombotic risk"}]
✗potential_interactions[{"drugs":["Warfarin","Amiodarone"],"severity":"Major","effect":"Amiodarone potentiates the anticoagulant effect of warfarin, increasing the risk of bleeding."},{"drugs":["Warfarin","Fluconazole"],"severity":"Major","effect":"Fluconazole increases the anticoagulant effect of warfarin by inhibiting its metabolism."},{"drugs":["Warfarin","Enoxaparin"],"severity":"Major","effect":"Concurrent use increases the risk of bleeding due to additive anticoagulant effects."},{"drugs":["Amiodarone","Metoprolol Succinate"],"severity":"Moderate","effect":"Additive bradycardic effects, may lead to hypotension or heart block."},{"drugs":["Amiodarone","Diltiazem ER"],"severity":"Moderate","effect":"Additive effects on AV conduction, risk of bradycardia."},{"drugs":["Metoprolol Succinate","Diltiazem ER"],"severity":"Moderate","effect":"Additive negative effects on heart rate and contractility."},{"drugs":["Warfarin","Acetaminophen"],"severity":"Moderate","effect":"High doses of acetaminophen may increase INR and bleeding risk."}](expected: [{"drugs":["Warfarin","Fluconazole"],"severity":"Major","effect":"Fluconazole inhibits CYP2C9, significantly increasing warfarin levels and bleeding risk"},{"drugs":["Warfarin","Amiodarone"],"severity":"Major","effect":"Amiodarone inhibits CYP2C9/1A2/3A4, increasing warfarin effect — typical dose reduction 30-50%"},{"drugs":["Metoprolol","Diltiazem"],"severity":"Major","effect":"Additive AV nodal blockade — risk of severe bradycardia or heart block"},{"drugs":["Warfarin","Enoxaparin"],"severity":"High","effect":"Dual anticoagulation increases bleeding risk"}])
✗therapeutic_duplications[{"category":"Anticoagulants","drugs":["Warfarin","Enoxaparin"],"note":"Used for bridging therapy until warfarin is therapeutic, but increases bleeding risk."},{"category":"Rate control agents","drugs":["Metoprolol Succinate","Diltiazem ER","Amiodarone"],"note":"Multiple agents for rate control in AFib; monitor for excessive bradycardia."}](expected: [{"category":"Rate control","drugs":["Metoprolol","Diltiazem","Amiodarone"],"note":"Triple rate control — assess need for all three"}])
2/4 fields correct
Why this is hard: Must identify ALL 4 major drug interactions. The Warfarin-Fluconazole CYP2C9 interaction is frequently missed by smaller models. Metoprolol+Diltiazem dual AV nodal blockade must be flagged. Aspirin is HELD, not active. Acetaminophen must be marked PRN.
14MedicalSurgical Note Parsing
94vs95★
Input
OPERATIVE REPORT. Date: 02/20/2026. Surgeon: Dr. Sarah Chen, MD, FACS. Assistant: Dr. James Park, MD. Anesthesia: General endotracheal (Dr. Reeves). Procedure: Laparoscopic cholecystectomy converted to open cholecystectomy. Indication: Acute cholecystitis with empyema, failed medical management. Findings: Gallbladder severely inflamed, gangrenous with empyema. Dense adhesions to duodenum and hepatic flexure of colon. Critical view of safety could NOT be obtained laparoscopically — decision to convert at 47 minutes. Common bile duct diameter 6mm, no stones, confirmed with intraoperative cholangiogram. Estimated blood loss: 350mL. Specimens: Gallbladder sent to pathology. Drain: 19-Fr Blake drain placed in Morrison's pouch. Complications: None intraoperative. Patient extubated and transferred to PACU in stable condition.
Expected Output
{
  "date": "2026-02-20",
  "surgeon.name": "Dr. Sarah Chen",
  "surgeon.credentials": "MD, FACS",
  "assistant.name": "Dr. James Park",
  "assistant.credentials": "MD",
  "anesthesiologist": "Dr. Reeves",
  "anesthesia_type": "General endotracheal",
  "procedure_planned": "Laparoscopic cholecystectomy",
  "procedure_actual": "Open cholecystectomy",
  "was_converted": true,
  "conversion_time_minutes": 47,
  "indication": "Acute cholecystitis with empyema",
  "findings.gallbladder_status": "Gangrenous with empyema",
  "findings.adhesions": "Dense, to duodenum and hepatic flexure",
  "findings.critical_view_obtained": false,
  "findings.cbd_diameter_mm": 6,
  "findings.cbd_stones": false,
  "findings.cholangiogram_performed": true,
  "ebl_ml": 350,
  "specimens": [
    "Gallbladder"
  ],
  "drain.type": "19-Fr Blake",
  "drain.location": "Morrison's pouch",
  "complications": "None",
  "disposition": "PACU, stable"
}
Claude Opus 4.6
4114ms94/100

Incorrect/missing fields: specimens, complications

✓date02/20/2026
✓surgeon.nameDr. Sarah Chen
✓surgeon.credentialsMD, FACS
✓assistant.nameDr. James Park
✓assistant.credentialsMD
✓anesthesiologistDr. Reeves
✓anesthesia_typeGeneral endotracheal
✓procedure_plannedLaparoscopic cholecystectomy
✓procedure_actualOpen cholecystectomy
✓was_convertedtrue
✓conversion_time_minutes47
✓indicationAcute cholecystitis with empyema, failed medical management
✓findings.gallbladder_statusSeverely inflamed, gangrenous with empyema
✓findings.adhesionsDense adhesions to duodenum and hepatic flexure of colon
✓findings.critical_view_obtainedfalse
✓findings.cbd_diameter_mm6
✓findings.cbd_stonesfalse
✓findings.cholangiogram_performedtrue
✓ebl_ml350
✗specimens["Gallbladder sent to pathology"](expected: ["Gallbladder"])
✓drain.type19-Fr Blake drain
✓drain.locationMorrison's pouch
✗complicationsNone intraoperative(expected: None)
✓dispositionPatient extubated and transferred to PACU in stable condition
22/24 fields correct
Grok 4
13147ms95/100

Incorrect/missing fields: complications, disposition

✓date02/20/2026
✓surgeon.nameDr. Sarah Chen
✓surgeon.credentialsMD, FACS
✓assistant.nameDr. James Park
✓assistant.credentialsMD
✓anesthesiologistDr. Reeves
✓anesthesia_typeGeneral endotracheal
✓procedure_plannedLaparoscopic cholecystectomy
✓procedure_actualOpen cholecystectomy
✓was_convertedtrue
✓conversion_time_minutes47
✓indicationAcute cholecystitis with empyema, failed medical management
✓findings.gallbladder_statusseverely inflamed, gangrenous with empyema
✓findings.adhesionsDense adhesions to duodenum and hepatic flexure of colon
✓findings.critical_view_obtainedfalse
✓findings.cbd_diameter_mm6
✓findings.cbd_stonesfalse
✓findings.cholangiogram_performedtrue
✓ebl_ml350
✓specimens["Gallbladder"]
✓drain.type19-Fr Blake drain
✓drain.locationMorrison's pouch
✗complicationsNone intraoperative(expected: None)
✗dispositionExtubated and transferred to PACU in stable condition(expected: PACU, stable)
22/24 fields correct
Why this is hard: was_converted must be true. critical_view_obtained must be false (this is WHY they converted). cbd_stones must be false (6mm diameter, no stones). conversion_time_minutes must be 47. Models often miss the conversion narrative or default critical_view_obtained to true.
15MedicalRadiology Report Structured Extraction
92vs93★
Input
CT CHEST WITH CONTRAST — 02/18/2026. CLINICAL INDICATION: 67F with history of NSCLC s/p right upper lobectomy (2024), new cough, rule out recurrence. TECHNIQUE: Helical CT from thoracic inlet to adrenals with 80mL Omnipaque 350 IV contrast. COMPARISON: CT Chest 08/12/2025. FINDINGS: LUNGS: New 1.8 × 1.4 cm spiculated soft tissue nodule in the right lower lobe (series 4, image 187), suspicious for recurrence. No prior correlate. Stable 4mm ground-glass nodule in the left lower lobe (previously noted, unchanged from 08/2025). Post-surgical changes in the right upper lobe with expected fibrotic bands. MEDIASTINUM: New subcarinal lymph node measuring 1.6 cm short axis (previously 0.8 cm), concerning for metastatic adenopathy. Right hilar lymphadenopathy, largest node 1.2 cm (new). Heart size normal. No pericardial effusion. PLEURA: Small right-sided pleural effusion (new). No pneumothorax. BONES: No suspicious osseous lesions. Mild degenerative changes thoracic spine. UPPER ABDOMEN: Left adrenal gland 2.1 cm nodule with enhancement (not present on prior) — cannot exclude metastasis. Right adrenal normal. IMPRESSION: 1. New 1.8 cm spiculated RLL nodule — highly suspicious for recurrence of NSCLC. 2. New mediastinal and right hilar lymphadenopathy — concerning for nodal metastasis. 3. New left adrenal nodule — metastasis cannot be excluded; recommend dedicated adrenal CT or PET-CT. 4. New small right pleural effusion — may represent malignant effusion in this context. 5. Stable LLL 4mm GGN — recommend continued surveillance. RECOMMENDATION: PET-CT recommended. Multidisciplinary tumor board review.
Expected Output
{
  "study_type": "CT Chest with contrast",
  "date": "2026-02-18",
  "clinical_history": "67F, NSCLC s/p right upper lobectomy (2024), new cough",
  "comparison_study": "CT Chest 08/12/2025",
  "new_findings": [
    {
      "location": "Right lower lobe",
      "description": "1.8 × 1.4 cm spiculated soft tissue nodule",
      "concern": "Recurrence of NSCLC",
      "severity": "Highly suspicious"
    },
    {
      "location": "Subcarinal",
      "description": "Lymph node 1.6 cm short axis (was 0.8 cm)",
      "concern": "Metastatic adenopathy"
    },
    {
      "location": "Right hilum",
      "description": "Lymphadenopathy, largest 1.2 cm",
      "concern": "Metastatic adenopathy"
    },
    {
      "location": "Right pleura",
      "description": "Small pleural effusion",
      "concern": "Possible malignant effusion"
    },
    {
      "location": "Left adrenal",
      "description": "2.1 cm enhancing nodule",
      "concern": "Cannot exclude metastasis"
    }
  ],
  "stable_findings": [
    {
      "location": "Left lower lobe",
      "description": "4mm ground-glass nodule",
      "comparison": "Unchanged from 08/2025"
    }
  ],
  "post_surgical": "Right upper lobectomy changes with fibrotic bands",
  "impressions_count": 5,
  "recommendations": [
    "PET-CT",
    "Multidisciplinary tumor board review",
    "Continued surveillance of LLL GGN"
  ],
  "overall_concern": "Likely NSCLC recurrence with possible nodal and adrenal metastasis"
}
Claude Opus 4.6
7764ms92/100

Incorrect/missing fields: new_findings

✓study_typeCT Chest with contrast
✓date02/18/2026
✓clinical_history67F with history of NSCLC s/p right upper lobectomy (2024), new cough, rule out recurrence
✓comparison_studyCT Chest 08/12/2025
✗new_findings[{"location":"Right lower lobe","description":"1.8 × 1.4 cm spiculated soft tissue nodule (series 4, image 187), no prior correlate","concern":"Highly suspicious for recurrence of NSCLC","severity":"High"},{"location":"Subcarinal mediastinum","description":"Subcarinal lymph node measuring 1.6 cm short axis, previously 0.8 cm","concern":"Concerning for metastatic adenopathy","severity":"High"},{"location":"Right hilum","description":"Right hilar lymphadenopathy, largest node 1.2 cm, new","concern":"Concerning for nodal metastasis","severity":"High"},{"location":"Left adrenal gland","description":"2.1 cm enhancing nodule, not present on prior study","concern":"Cannot exclude metastasis","severity":"High"},{"location":"Right pleural space","description":"Small right-sided pleural effusion","concern":"May represent malignant effusion in this clinical context","severity":"Moderate"}](expected: [{"location":"Right lower lobe","description":"1.8 × 1.4 cm spiculated soft tissue nodule","concern":"Recurrence of NSCLC","severity":"Highly suspicious"},{"location":"Subcarinal","description":"Lymph node 1.6 cm short axis (was 0.8 cm)","concern":"Metastatic adenopathy"},{"location":"Right hilum","description":"Lymphadenopathy, largest 1.2 cm","concern":"Metastatic adenopathy"},{"location":"Right pleura","description":"Small pleural effusion","concern":"Possible malignant effusion"},{"location":"Left adrenal","description":"2.1 cm enhancing nodule","concern":"Cannot exclude metastasis"}])
✓stable_findings[{"location":"Left lower lobe","description":"4mm ground-glass nodule","comparison":"Unchanged from 08/2025"},{"location":"Right upper lobe","description":"Post-surgical changes with expected fibrotic bands","comparison":"Expected post-lobectomy changes"},{"location":"Thoracic spine","description":"Mild degenerative changes","comparison":"Stable"}]
✓post_surgicalRight upper lobectomy (2024) with expected post-surgical fibrotic changes in the right upper lobe
✓impressions_count5
✓recommendations["PET-CT recommended","Dedicated adrenal CT or PET-CT for characterization of left adrenal nodule","Multidisciplinary tumor board review","Continued surveillance of stable LLL 4mm GGN"]
✓overall_concernHigh - multiple new findings highly suspicious for NSCLC recurrence with potential nodal and distant metastatic disease
9/10 fields correct
Grok 4
37869ms93/100

All fields correct

✓study_typeCT CHEST WITH CONTRAST
✓date02/18/2026
✓clinical_history67F with history of NSCLC s/p right upper lobectomy (2024), new cough, rule out recurrence
✓comparison_studyCT Chest 08/12/2025
✓new_findings[{"location":"right lower lobe","description":"1.8 × 1.4 cm spiculated soft tissue nodule","concern":"suspicious for recurrence of NSCLC","severity":"high"},{"location":"subcarinal","description":"lymph node measuring 1.6 cm short axis","concern":"metastatic adenopathy","severity":"concerning"},{"location":"right hilar","description":"lymphadenopathy, largest node 1.2 cm","concern":"nodal metastasis","severity":"concerning"},{"location":"right pleura","description":"small pleural effusion","concern":"may represent malignant effusion","severity":"concerning"},{"location":"left adrenal gland","description":"2.1 cm nodule with enhancement","concern":"metastasis cannot be excluded","severity":"concerning"}]
✓stable_findings[{"location":"left lower lobe","description":"4mm ground-glass nodule","comparison":"unchanged from 08/2025"},{"location":"thoracic spine","description":"mild degenerative changes","comparison":"no prior mention, assumed stable"}]
✓post_surgicalPost-surgical changes in the right upper lobe with expected fibrotic bands
✓impressions_count5
✓recommendations["PET-CT recommended","Multidisciplinary tumor board review","dedicated adrenal CT or PET-CT","continued surveillance for stable LLL GGN"]
✓overall_concernHighly suspicious for recurrence and metastasis
10/10 fields correct
Why this is hard: Must identify all 5 NEW findings and distinguish from the 1 STABLE finding. The subcarinal node GREW (0.8→1.6cm) — this is new/changed, not stable. Left adrenal nodule 'cannot exclude metastasis' — models must preserve the uncertainty language. Recommendations must include all three actions.
16FinanceEarnings Call P&L Extraction
98★vs98
Input
Q4 2025 Earnings Call — TechCorp Inc. (Ticker: TCHK). CFO Maria Santos: "Total revenue for Q4 was $4.23 billion, up 18% year-over-year. Breaking that down: Cloud Services revenue was $2.87 billion, growing 31% and now representing 68% of total revenue. Enterprise Software was $980 million, roughly flat. Professional Services contributed $380 million, down 12% as we continue the strategic shift away from lower-margin consulting. On the cost side, GAAP gross profit was $2.71 billion, for a gross margin of 64.1%. Non-GAAP gross margin, excluding $142 million in stock-based compensation allocated to cost of revenue, was 67.4%. Operating expenses: R&D was $890 million, up from $760 million — we've been investing heavily in our AI platform. Sales & Marketing was $620 million, and G&A was $210 million. GAAP operating income was $990 million, and non-GAAP operating income was $1.38 billion. The delta is primarily SBC of $310 million, restructuring charges of $47 million related to the EMEA headcount reduction, and $33 million in acquisition-related costs. GAAP net income was $742 million, or $2.47 per diluted share on 300.4 million shares. Non-GAAP EPS was $3.84."
Expected Output
{
  "period": "Q4 2025",
  "company": "TechCorp Inc.",
  "ticker": "TCHK",
  "total_revenue_billions": 4.23,
  "revenue_yoy_growth": "18%",
  "revenue_breakdown": [
    {
      "segment": "Cloud Services",
      "revenue_billions": 2.87,
      "growth": "31%",
      "pct_of_total": 68
    },
    {
      "segment": "Enterprise Software",
      "revenue_millions": 980,
      "growth": "~0%"
    },
    {
      "segment": "Professional Services",
      "revenue_millions": 380,
      "growth": "-12%"
    }
  ],
  "gaap_gross_profit_billions": 2.71,
  "gaap_gross_margin_pct": 64.1,
  "non_gaap_gross_margin_pct": 67.4,
  "sbc_in_cogs_millions": 142,
  "operating_expenses.rd_millions": 890,
  "operating_expenses.rd_prior_millions": 760,
  "operating_expenses.sales_marketing_millions": 620,
  "operating_expenses.ga_millions": 210,
  "gaap_operating_income_millions": 990,
  "non_gaap_operating_income_millions": 1380,
  "gaap_non_gaap_reconciliation": [
    {
      "item": "Stock-based compensation",
      "amount_millions": 310
    },
    {
      "item": "Restructuring charges",
      "amount_millions": 47
    },
    {
      "item": "Acquisition-related costs",
      "amount_millions": 33
    }
  ],
  "gaap_net_income_millions": 742,
  "gaap_eps": 2.47,
  "non_gaap_eps": 3.84,
  "diluted_shares_millions": 300.4
}
Claude Opus 4.6
5232ms98/100

Incorrect/missing fields: revenue_breakdown

✓periodQ4 2025
✓companyTechCorp Inc.
✓tickerTCHK
✓total_revenue_billions4.23
✓revenue_yoy_growth18%
✗revenue_breakdown[{"segment":"Cloud Services","revenue_billions":2.87,"growth":"31%","pct_of_total":68},{"segment":"Enterprise Software","revenue_billions":0.98,"growth":"roughly flat","pct_of_total":23.2},{"segment":"Professional Services","revenue_billions":0.38,"growth":"-12%","pct_of_total":9}](expected: [{"segment":"Cloud Services","revenue_billions":2.87,"growth":"31%","pct_of_total":68},{"segment":"Enterprise Software","revenue_millions":980,"growth":"~0%"},{"segment":"Professional Services","revenue_millions":380,"growth":"-12%"}])
✓gaap_gross_profit_billions2.71
✓gaap_gross_margin_pct64.1
✓non_gaap_gross_margin_pct67.4
✓sbc_in_cogs_millions142
✓operating_expenses.rd_millions890
✓operating_expenses.rd_prior_millions760
✓operating_expenses.sales_marketing_millions620
✓operating_expenses.ga_millions210
✓gaap_operating_income_millions990
✓non_gaap_operating_income_millions1380
✓gaap_non_gaap_reconciliation[{"item":"Stock-Based Compensation","amount_millions":310},{"item":"Restructuring Charges","amount_millions":47},{"item":"Acquisition-Related Costs","amount_millions":33}]
✓gaap_net_income_millions742
✓gaap_eps2.47
✓non_gaap_eps3.84
✓diluted_shares_millions300.4
20/21 fields correct
Grok 4
37479ms98/100

Incorrect/missing fields: revenue_breakdown

✓periodQ4 2025
✓companyTechCorp Inc.
✓tickerTCHK
✓total_revenue_billions4.23
✓revenue_yoy_growth18%
✗revenue_breakdown[{"segment":"Cloud Services","revenue_billions":2.87,"growth":"31%","pct_of_total":68},{"segment":"Enterprise Software","revenue_billions":0.98,"growth":"0%","pct_of_total":23},{"segment":"Professional Services","revenue_billions":0.38,"growth":"-12%","pct_of_total":9}](expected: [{"segment":"Cloud Services","revenue_billions":2.87,"growth":"31%","pct_of_total":68},{"segment":"Enterprise Software","revenue_millions":980,"growth":"~0%"},{"segment":"Professional Services","revenue_millions":380,"growth":"-12%"}])
✓gaap_gross_profit_billions2.71
✓gaap_gross_margin_pct64.1
✓non_gaap_gross_margin_pct67.4
✓sbc_in_cogs_millions142
✓operating_expenses.rd_millions890
✓operating_expenses.rd_prior_millions760
✓operating_expenses.sales_marketing_millions620
✓operating_expenses.ga_millions210
✓gaap_operating_income_millions990
✓non_gaap_operating_income_millions1380
✓gaap_non_gaap_reconciliation[{"item":"SBC","amount_millions":310},{"item":"restructuring charges","amount_millions":47},{"item":"acquisition-related costs","amount_millions":33}]
✓gaap_net_income_millions742
✓gaap_eps2.47
✓non_gaap_eps3.84
✓diluted_shares_millions300.4
20/21 fields correct
Why this is hard: Must distinguish GAAP from non-GAAP figures throughout. The reconciliation items (SBC $310M + restructuring $47M + acquisition $33M = $390M delta) must all be captured. SBC in COGS ($142M) is SEPARATE from total SBC ($310M). Models frequently confuse these or sum them incorrectly.
17FinanceBalance Sheet Ratio Calculation
99★vs97
Input
CONSOLIDATED BALANCE SHEET — December 31, 2025 (in millions). ASSETS: Cash and equivalents $3,420. Short-term investments $1,850. Accounts receivable, net $2,190 (allowance for doubtful accounts $68). Inventories $890. Prepaid expenses $340. Total Current Assets $8,690. Property and equipment, net $12,400. Goodwill $8,750. Intangible assets, net $3,200. Operating lease right-of-use assets $1,860. Other non-current assets $920. Total Assets $35,820. LIABILITIES: Accounts payable $1,640. Accrued expenses $2,180. Current portion of long-term debt $500. Deferred revenue, current $1,420. Total Current Liabilities $5,740. Long-term debt $8,200 (senior notes: $5B at 3.75% due 2030, $3.2B at 4.25% due 2033). Operating lease liabilities $1,680. Deferred tax liabilities $890. Other non-current liabilities $460. Total Liabilities $16,970. EQUITY: Common stock $30. Additional paid-in capital $12,840. Retained earnings $9,180. Treasury stock ($2,400). Accumulated other comprehensive loss ($800). Total Stockholders' Equity $18,850. Total Liabilities + Equity $35,820.
Expected Output
{
  "as_of": "2025-12-31",
  "currency": "USD millions",
  "current_assets": 8690,
  "total_assets": 35820,
  "current_liabilities": 5740,
  "total_liabilities": 16970,
  "total_equity": 18850,
  "cash_and_equivalents": 3420,
  "total_debt": 8700,
  "debt_breakdown": [
    {
      "instrument": "Senior notes 3.75%",
      "amount": 5000,
      "maturity": 2030
    },
    {
      "instrument": "Senior notes 4.25%",
      "amount": 3200,
      "maturity": 2033
    }
  ],
  "computed_ratios.current_ratio": 1.51,
  "computed_ratios.quick_ratio": 1.3,
  "computed_ratios.debt_to_equity": 0.46,
  "computed_ratios.debt_to_assets": 0.24,
  "computed_ratios.working_capital_millions": 2950,
  "balance_sheet_check": true
}
Claude Opus 4.6
4031ms99/100

Incorrect/missing fields: currency

✓as_of2025-12-31
✗currencyUSD(expected: USD millions)
✓current_assets8690
✓total_assets35820
✓current_liabilities5740
✓total_liabilities16970
✓total_equity18850
✓cash_and_equivalents3420
✓total_debt8700
✓debt_breakdown[{"instrument":"Senior Notes 3.75%","amount":5000,"maturity":2030},{"instrument":"Senior Notes 4.25%","amount":3200,"maturity":2033},{"instrument":"Current portion of long-term debt","amount":500,"maturity":2026}]
✓computed_ratios.current_ratio1.51
✓computed_ratios.quick_ratio1.3
✓computed_ratios.debt_to_equity0.46
✓computed_ratios.debt_to_assets0.24
✓computed_ratios.working_capital_millions2950
✓balance_sheet_checktrue
15/16 fields correct
Grok 4
72934ms97/100

Incorrect/missing fields: currency

✓as_ofDecember 31, 2025
✗currencyUSD(expected: USD millions)
✓current_assets8690
✓total_assets35820
✓current_liabilities5740
✓total_liabilities16970
✓total_equity18850
✓cash_and_equivalents3420
✓total_debt8700
✓debt_breakdown[{"instrument":"Current portion of long-term debt","amount":500,"maturity":2026},{"instrument":"Senior notes at 3.75%","amount":5000,"maturity":2030},{"instrument":"Senior notes at 4.25%","amount":3200,"maturity":2033}]
✓computed_ratios.current_ratio1.5139372822299653
✓computed_ratios.quick_ratio1.299651567944251
✓computed_ratios.debt_to_equity0.46153846153846156
✓computed_ratios.debt_to_assets0.2429379955329989
✓computed_ratios.working_capital_millions2950
✓balance_sheet_checktrue
15/16 fields correct
Why this is hard: Total debt = current portion ($500M) + long-term ($8,200M) = $8,700M. Current ratio = 8690/5740 = 1.514. Quick ratio = (8690 - 890 - 340)/5740 = 1.30. Working capital = 8690-5740 = 2950. balance_sheet_check confirms Assets = L+E (35820 = 16970 + 18850). Treasury stock is NEGATIVE equity.
18FinanceMulti-Currency FX Impact Analysis
96★vs95
Input
GEOGRAPHIC REVENUE ANALYSIS — FY2025. Americas: Reported revenue $6.24B (up 22% YoY). Europe: Reported revenue €2.18B ($2.31B at avg rate 1.06 USD/EUR), up 14% in euros but only 9% in USD due to euro weakness (prior year avg rate was 1.11 USD/EUR). Asia-Pacific: Reported ¥412B ($2.78B at avg rate 148.1 JPY/USD), up 19% in yen but down 2% in USD — the yen depreciated from 128.4 to 148.1 JPY/USD. Japan alone was ¥298B ($2.01B), up 23% in local currency but flat in USD. Rest of World: $680M, up 8%. Total reported revenue: $12.01B, up 15.2% YoY. On a constant-currency basis (using FY2024 exchange rates), total revenue would have been $12.68B, representing 21.7% growth. FX headwind to reported revenue: approximately $670M or 5.6 percentage points of growth.
Expected Output
{
  "fiscal_year": "FY2025",
  "total_revenue_reported_billions": 12.01,
  "total_revenue_constant_currency_billions": 12.68,
  "reported_growth_pct": 15.2,
  "constant_currency_growth_pct": 21.7,
  "fx_headwind_millions": 670,
  "fx_headwind_growth_points": 5.6,
  "regions": [
    {
      "region": "Americas",
      "reported_usd_billions": 6.24,
      "yoy_reported_pct": 22
    },
    {
      "region": "Europe",
      "local_currency": "EUR",
      "local_revenue_billions": 2.18,
      "reported_usd_billions": 2.31,
      "avg_fx_rate": 1.06,
      "prior_year_fx_rate": 1.11,
      "yoy_local_pct": 14,
      "yoy_usd_pct": 9
    },
    {
      "region": "Asia-Pacific",
      "local_currency": "JPY",
      "local_revenue_billions_jpy": 412,
      "reported_usd_billions": 2.78,
      "avg_fx_rate": 148.1,
      "prior_year_fx_rate": 128.4,
      "yoy_local_pct": 19,
      "yoy_usd_pct": -2
    },
    {
      "region": "Rest of World",
      "reported_usd_millions": 680,
      "yoy_reported_pct": 8
    }
  ],
  "japan_subset.local_revenue_billions_jpy": 298,
  "japan_subset.reported_usd_billions": 2.01,
  "japan_subset.yoy_local_pct": 23,
  "japan_subset.yoy_usd_pct": 0
}
Claude Opus 4.6
4061ms96/100

Incorrect/missing fields: regions

✓fiscal_yearFY2025
✓total_revenue_reported_billions12.01
✓total_revenue_constant_currency_billions12.68
✓reported_growth_pct15.2
✓constant_currency_growth_pct21.7
✓fx_headwind_millions670
✓fx_headwind_growth_points5.6
✗regions[{"region":"Americas","reported_usd_billions":6.24,"yoy_reported_pct":22},{"region":"Europe","reported_usd_billions":2.31,"yoy_reported_pct":9},{"region":"Asia-Pacific","reported_usd_billions":2.78,"yoy_reported_pct":-2},{"region":"Rest of World","reported_usd_billions":0.68,"yoy_reported_pct":8}](expected: [{"region":"Americas","reported_usd_billions":6.24,"yoy_reported_pct":22},{"region":"Europe","local_currency":"EUR","local_revenue_billions":2.18,"reported_usd_billions":2.31,"avg_fx_rate":1.06,"prior_year_fx_rate":1.11,"yoy_local_pct":14,"yoy_usd_pct":9},{"region":"Asia-Pacific","local_currency":"JPY","local_revenue_billions_jpy":412,"reported_usd_billions":2.78,"avg_fx_rate":148.1,"prior_year_fx_rate":128.4,"yoy_local_pct":19,"yoy_usd_pct":-2},{"region":"Rest of World","reported_usd_millions":680,"yoy_reported_pct":8}])
✓japan_subset.local_revenue_billions_jpy298
✓japan_subset.reported_usd_billions2.01
✓japan_subset.yoy_local_pct23
✓japan_subset.yoy_usd_pct0
11/12 fields correct
Grok 4
22536ms95/100

Incorrect/missing fields: regions

✓fiscal_year2025
✓total_revenue_reported_billions12.01
✓total_revenue_constant_currency_billions12.68
✓reported_growth_pct15.2
✓constant_currency_growth_pct21.7
✓fx_headwind_millions670
✓fx_headwind_growth_points5.6
✗regions[{"region":"Americas","reported_usd_billions":6.24,"yoy_reported_pct":22},{"region":"Europe","reported_usd_billions":2.31,"yoy_reported_pct":9},{"region":"Asia-Pacific","reported_usd_billions":2.78,"yoy_reported_pct":-2},{"region":"Rest of World","reported_usd_billions":0.68,"yoy_reported_pct":8}](expected: [{"region":"Americas","reported_usd_billions":6.24,"yoy_reported_pct":22},{"region":"Europe","local_currency":"EUR","local_revenue_billions":2.18,"reported_usd_billions":2.31,"avg_fx_rate":1.06,"prior_year_fx_rate":1.11,"yoy_local_pct":14,"yoy_usd_pct":9},{"region":"Asia-Pacific","local_currency":"JPY","local_revenue_billions_jpy":412,"reported_usd_billions":2.78,"avg_fx_rate":148.1,"prior_year_fx_rate":128.4,"yoy_local_pct":19,"yoy_usd_pct":-2},{"region":"Rest of World","reported_usd_millions":680,"yoy_reported_pct":8}])
✓japan_subset.local_revenue_billions_jpy298
✓japan_subset.reported_usd_billions2.01
✓japan_subset.yoy_local_pct23
✓japan_subset.yoy_usd_pct0
11/12 fields correct
Why this is hard: APAC grew 19% in yen but SHRANK 2% in USD — models must correctly report negative USD growth. Japan is a SUBSET of APAC, not a separate region. FX headwind is $670M (constant_currency - reported). Prior year FX rates must be distinct from current year. Europe: 14% local growth but only 9% in USD.
19FinanceCash Flow Statement Extraction
100★vs99
Input
CONSOLIDATED STATEMENT OF CASH FLOWS — FY2025 (in millions). OPERATING ACTIVITIES: Net income $2,890. Adjustments: Depreciation and amortization $1,420. Stock-based compensation $680. Deferred income taxes ($210). Changes in working capital: Accounts receivable ($340). Inventories $85. Accounts payable $220. Deferred revenue $190. Accrued expenses ($65). Net cash from operating activities $4,870. INVESTING ACTIVITIES: Capital expenditures ($2,180). Acquisitions, net of cash acquired ($3,400). Purchases of short-term investments ($2,800). Maturities of short-term investments $1,950. Proceeds from sale of assets $120. Net cash used in investing activities ($6,310). FINANCING ACTIVITIES: Proceeds from issuance of debt $3,000. Repayment of debt ($1,500). Share repurchases ($2,200). Dividends paid ($580). Proceeds from employee stock plans $340. Net cash used in financing activities ($940). Effect of exchange rate changes ($85). NET DECREASE IN CASH ($2,465). Cash at beginning of period $5,885. Cash at end of period $3,420.
Expected Output
{
  "fiscal_year": "FY2025",
  "operating_cash_flow": 4870,
  "investing_cash_flow": -6310,
  "financing_cash_flow": -940,
  "fx_effect": -85,
  "net_change_in_cash": -2465,
  "beginning_cash": 5885,
  "ending_cash": 3420,
  "free_cash_flow": 2690,
  "key_items.net_income": 2890,
  "key_items.depreciation_amortization": 1420,
  "key_items.sbc": 680,
  "key_items.capex": -2180,
  "key_items.acquisitions": -3400,
  "key_items.share_repurchases": -2200,
  "key_items.dividends": -580,
  "key_items.debt_issued": 3000,
  "key_items.debt_repaid": -1500,
  "cash_flow_check": true
}
Claude Opus 4.6
4972ms100/100

All fields correct

✓fiscal_yearFY2025
✓operating_cash_flow4870
✓investing_cash_flow-6310
✓financing_cash_flow-940
✓fx_effect-85
✓net_change_in_cash-2465
✓beginning_cash5885
✓ending_cash3420
✓free_cash_flow2690
✓key_items.net_income2890
✓key_items.depreciation_amortization1420
✓key_items.sbc680
✓key_items.capex-2180
✓key_items.acquisitions-3400
✓key_items.share_repurchases-2200
✓key_items.dividends-580
✓key_items.debt_issued3000
✓key_items.debt_repaid-1500
✓cash_flow_checktrue
19/19 fields correct
Grok 4
18398ms99/100

All fields correct

✓fiscal_year2025
✓operating_cash_flow4870
✓investing_cash_flow-6310
✓financing_cash_flow-940
✓fx_effect-85
✓net_change_in_cash-2465
✓beginning_cash5885
✓ending_cash3420
✓free_cash_flow2690
✓key_items.net_income2890
✓key_items.depreciation_amortization1420
✓key_items.sbc680
✓key_items.capex-2180
✓key_items.acquisitions-3400
✓key_items.share_repurchases-2200
✓key_items.dividends-580
✓key_items.debt_issued3000
✓key_items.debt_repaid-1500
✓cash_flow_checktrue
19/19 fields correct
Why this is hard: Free cash flow = Operating CF ($4,870) - CapEx ($2,180) = $2,690. Cash flow check: 4870 + (-6310) + (-940) + (-85) = -2465, and 5885 + (-2465) = 3420. Negative values MUST have negative signs. Models often forget to negate outflows or miscalculate FCF by including acquisitions.
20FinanceConvertible Note Terms Extraction
93vs95★
Input
SERIES B CONVERTIBLE NOTE TERM SHEET — Acme AI, Inc. Principal Amount: $25,000,000. Issuance Date: January 15, 2026. Maturity Date: January 15, 2028 (24 months). Interest Rate: 6% per annum, simple interest, compounded annually, payable at conversion or maturity (not current-pay). Conversion Discount: 25% discount to the price per share in the Next Qualified Financing (minimum $50M raise). Valuation Cap: $200,000,000 pre-money. Conversion Mechanics: Notes convert at the LOWER of (a) the Valuation Cap price or (b) the Discount Price. If no Qualified Financing occurs by maturity, noteholder may elect: (i) conversion at the Valuation Cap, (ii) repayment of principal plus accrued interest, or (iii) extension for 12 months at 8% interest. Anti-Dilution: Broad-based weighted average adjustment. Most Favored Nation: If the Company issues subsequent convertible instruments with more favorable terms (lower cap or higher discount), these notes shall automatically adjust to the more favorable terms. Pro Rata Rights: Noteholders have the right to participate in the Next Qualified Financing for up to 2× their original investment. Information Rights: Monthly financial statements, annual audited financials, and board observer seat for investors holding >$5M in notes.
Expected Output
{
  "instrument": "Series B Convertible Note",
  "company": "Acme AI, Inc.",
  "principal_amount": 25000000,
  "issuance_date": "2026-01-15",
  "maturity_date": "2028-01-15",
  "term_months": 24,
  "interest_rate_pct": 6,
  "interest_type": "Simple, compounded annually",
  "interest_payment": "At conversion or maturity (not current-pay)",
  "conversion_discount_pct": 25,
  "qualified_financing_minimum": 50000000,
  "valuation_cap": 200000000,
  "conversion_price": "Lower of cap price or discount price",
  "maturity_options": [
    {
      "option": "Convert at valuation cap"
    },
    {
      "option": "Repayment of principal plus accrued interest"
    },
    {
      "option": "Extension for 12 months at 8% interest"
    }
  ],
  "anti_dilution": "Broad-based weighted average",
  "most_favored_nation": true,
  "mfn_triggers": [
    "Lower valuation cap",
    "Higher discount"
  ],
  "pro_rata_rights.available": true,
  "pro_rata_rights.participation_limit": "2× original investment",
  "information_rights.monthly": "Financial statements",
  "information_rights.annual": "Audited financials",
  "information_rights.board_observer": true,
  "information_rights.board_observer_threshold": 5000000
}
Claude Opus 4.6
5113ms93/100

Incorrect/missing fields: mfn_triggers, interest_type, conversion_price, information_rights.monthly

✓instrumentSeries B Convertible Note
✓companyAcme AI, Inc.
✓principal_amount25000000
✓issuance_date2026-01-15
✓maturity_date2028-01-15
✓term_months24
✓interest_rate_pct6
✗interest_typesimple(expected: Simple, compounded annually)
✓interest_paymentPayable at conversion or maturity (not current-pay)
✓conversion_discount_pct25
✓qualified_financing_minimum50000000
✓valuation_cap200000000
✗conversion_priceLower of (a) the Valuation Cap price or (b) the Discount Price (25% discount to the Next Qualified Financing price per share)(expected: Lower of cap price or discount price)
✓maturity_options[{"option":"Conversion at the Valuation Cap"},{"option":"Repayment of principal plus accrued interest"},{"option":"Extension for 12 months at 8% interest"}]
✓anti_dilutionBroad-based weighted average adjustment
✓most_favored_nationtrue
✗mfn_triggers["Issuance of subsequent convertible instruments with a lower valuation cap","Issuance of subsequent convertible instruments with a higher discount"](expected: ["Lower valuation cap","Higher discount"])
✓pro_rata_rights.availabletrue
✓pro_rata_rights.participation_limit2× original investment amount
✗information_rights.monthlyMonthly financial statements(expected: Financial statements)
✓information_rights.annualAnnual audited financials
✓information_rights.board_observertrue
✓information_rights.board_observer_threshold5000000
19/23 fields correct
Grok 4
21232ms95/100

All fields correct

✓instrumentSERIES B CONVERTIBLE NOTE
✓companyAcme AI, Inc.
✓principal_amount25000000
✓issuance_dateJanuary 15, 2026
✓maturity_dateJanuary 15, 2028
✓term_months24
✓interest_rate_pct6
✓interest_typesimple interest, compounded annually
✓interest_paymentpayable at conversion or maturity (not current-pay)
✓conversion_discount_pct25
✓qualified_financing_minimum50000000
✓valuation_cap200000000
✓conversion_priceLOWER of (a) the Valuation Cap price or (b) the Discount Price.
✓maturity_options[{"option":"conversion at the Valuation Cap"},{"option":"repayment of principal plus accrued interest"},{"option":"extension for 12 months at 8% interest"}]
✓anti_dilutionBroad-based weighted average adjustment
✓most_favored_nationtrue
✓mfn_triggers["lower cap","higher discount"]
✓pro_rata_rights.availabletrue
✓pro_rata_rights.participation_limitup to 2× their original investment
✓information_rights.monthlyfinancial statements
✓information_rights.annualaudited financials
✓information_rights.board_observertrue
✓information_rights.board_observer_threshold5000000
23/23 fields correct
Why this is hard: Interest is 'simple, compounded annually' and NOT current-pay — this distinction matters. Extension option changes rate from 6% to 8%. board_observer_threshold is for investors >$5M (not all noteholders). MFN clause triggers must be specific. Conversion is at the LOWER of cap/discount, not either.
21Logic / SchemaConditional Array Extraction with camelCase
100★vs100
Input
Extract ONLY the third item from the following list IF its price is greater than $100. Format all field names in camelCase. If the condition is not met, return {"result": null, "reason": "condition_not_met"}.

Items:
1. Widget Alpha — Price: $45.00 — Category: Hardware — In Stock: Yes
2. Widget Beta — Price: $220.00 — Category: Software — In Stock: No
3. Widget Gamma — Price: $189.50 — Category: Hardware — In Stock: Yes
4. Widget Delta — Price: $67.00 — Category: Electronics — In Stock: Yes
Expected Output
{
  "result.itemName": "Widget Gamma",
  "result.price": 189.5,
  "result.category": "Hardware",
  "result.inStock": true,
  "conditionMet": true,
  "extractedIndex": 3
}
Claude Opus 4.6
2195ms100/100

All fields correct

✓result.itemNameWidget Gamma
✓result.price189.5
✓result.categoryHardware
✓result.inStocktrue
✓conditionMettrue
✓extractedIndex3
6/6 fields correct
Grok 4
28368ms100/100

All fields correct

✓result.itemNameWidget Gamma
✓result.price189.5
✓result.categoryHardware
✓result.inStocktrue
✓conditionMettrue
✓extractedIndex3
6/6 fields correct
Why this is hard: Must extract the THIRD item (Widget Gamma at $189.50), NOT the most expensive or first >$100. Field names MUST be camelCase (itemName, inStock, conditionMet, extractedIndex). inStock must be boolean true, not string 'Yes'. price must be numeric without dollar sign.
22Logic / SchemaNested Object Flattening with Conflict Resolution
100★vs100
Input
Flatten the following nested JSON into a single-level object. When key conflicts arise (same key name at different nesting levels), use dot notation with the full path. Preserve original data types. Do NOT flatten arrays — keep them as-is.

{"user": {"id": 42, "name": "Alice", "address": {"city": "Portland", "state": "OR", "zip": "97201"}}, "order": {"id": 1087, "items": [{"sku": "A1", "qty": 2}, {"sku": "B3", "qty": 1}], "total": 299.99, "address": {"city": "Seattle", "state": "WA", "zip": "98101"}}, "id": 999}
Expected Output
{
  "user.id": 42,
  "user.name": "Alice",
  "user.address.city": "Portland",
  "user.address.state": "OR",
  "user.address.zip": "97201",
  "order.id": 1087,
  "order.items": [
    {
      "sku": "A1",
      "qty": 2
    },
    {
      "sku": "B3",
      "qty": 1
    }
  ],
  "order.total": 299.99,
  "order.address.city": "Seattle",
  "order.address.state": "WA",
  "order.address.zip": "98101",
  "id": 999
}
Claude Opus 4.6
2927ms100/100

All fields correct

✓user.id42
✓user.nameAlice
✓user.address.cityPortland
✓user.address.stateOR
✓user.address.zip97201
✓order.id1087
✓order.items[{"sku":"A1","qty":2},{"sku":"B3","qty":1}]
✓order.total299.99
✓order.address.citySeattle
✓order.address.stateWA
✓order.address.zip98101
✓id999
12/12 fields correct
Grok 4
13958ms100/100

All fields correct

✓user.id42
✓user.nameAlice
✓user.address.cityPortland
✓user.address.stateOR
✓user.address.zip97201
✓order.id1087
✓order.items[{"sku":"A1","qty":2},{"sku":"B3","qty":1}]
✓order.total299.99
✓order.address.citySeattle
✓order.address.stateWA
✓order.address.zip98101
✓id999
12/12 fields correct
Why this is hard: There are THREE 'id' fields (user.id=42, order.id=1087, id=999) — all must be preserved with correct paths. The top-level 'id' keeps its short name. Arrays must NOT be flattened (order.items stays as array). Two different addresses (Portland and Seattle) must be distinguished by path. Data types must be preserved (integers, floats, strings, arrays).
23Logic / SchemaMulti-step Date Reasoning
100★vs100
Input
Calculate the number of BUSINESS DAYS between February 14, 2026 (Saturday) and March 6, 2026 (Friday), INCLUSIVE of both dates if they fall on business days. Exclude weekends (Saturday, Sunday) and the following US holidays: Presidents' Day (February 16, 2026 — Monday). Show your work by listing each business day.
Expected Output
{
  "start_date": "2026-02-14",
  "end_date": "2026-03-06",
  "start_is_business_day": false,
  "end_is_business_day": true,
  "holidays_excluded": [
    "2026-02-16"
  ],
  "business_days": [
    "2026-02-17",
    "2026-02-18",
    "2026-02-19",
    "2026-02-20",
    "2026-02-23",
    "2026-02-24",
    "2026-02-25",
    "2026-02-26",
    "2026-02-27",
    "2026-03-02",
    "2026-03-03",
    "2026-03-04",
    "2026-03-05",
    "2026-03-06"
  ],
  "total_business_days": 14
}
Claude Opus 4.6
3218ms100/100

All fields correct

✓start_date2026-02-14
✓end_date2026-03-06
✓start_is_business_dayfalse
✓end_is_business_daytrue
✓holidays_excluded["2026-02-16"]
✓business_days["2026-02-17","2026-02-18","2026-02-19","2026-02-20","2026-02-23","2026-02-24","2026-02-25","2026-02-26","2026-02-27","2026-03-02","2026-03-03","2026-03-04","2026-03-05","2026-03-06"]
✓total_business_days14
7/7 fields correct
Grok 4
25704ms100/100

All fields correct

✓start_date2026-02-14
✓end_date2026-03-06
✓start_is_business_dayfalse
✓end_is_business_daytrue
✓holidays_excluded["2026-02-16"]
✓business_days["2026-02-17","2026-02-18","2026-02-19","2026-02-20","2026-02-23","2026-02-24","2026-02-25","2026-02-26","2026-02-27","2026-03-02","2026-03-03","2026-03-04","2026-03-05","2026-03-06"]
✓total_business_days14
7/7 fields correct
Why this is hard: Feb 14 is Saturday — NOT a business day. Feb 16 is Presidents' Day — excluded. The first business day is Feb 17 (Tuesday). March 6 IS a business day (Friday) and is INCLUSIVE. Total must be exactly 14. Models commonly miscount by ±1 or forget to skip the holiday.
24Logic / SchemaSchema Migration with Backward Compatibility
98★vs98
Input
Migrate the following V1 data to V2 schema. V2 rules: (1) 'full_name' splits into 'firstName' and 'lastName'. (2) 'age' is REMOVED — compute 'birthYear' from age assuming current year is 2026. (3) 'email' stays but add 'emailDomain'. (4) 'tags' array moves under a new 'metadata' object. (5) Add 'schemaVersion': 2. (6) For backward compatibility: keep 'full_name' as 'deprecated_fullName' and 'age' as 'deprecated_age'.

V1 Data: {"full_name": "Dr. Maria Santos-Garcia", "age": 34, "email": "maria.sg@tufts-medical.edu", "tags": ["cardiology", "research", "AI/ML"], "role": "Senior Fellow"}
Expected Output
{
  "schemaVersion": 2,
  "firstName": "Maria",
  "lastName": "Santos-Garcia",
  "email": "maria.sg@tufts-medical.edu",
  "emailDomain": "tufts-medical.edu",
  "birthYear": 1992,
  "role": "Senior Fellow",
  "metadata.tags": [
    "cardiology",
    "research",
    "AI/ML"
  ],
  "deprecated_fullName": "Dr. Maria Santos-Garcia",
  "deprecated_age": 34
}
Claude Opus 4.6
2664ms98/100

All fields correct

✓schemaVersion2
✓firstNameDr. Maria
✓lastNameSantos-Garcia
✓emailmaria.sg@tufts-medical.edu
✓emailDomaintufts-medical.edu
✓birthYear1992
✓roleSenior Fellow
✓metadata.tags["cardiology","research","AI/ML"]
✓deprecated_fullNameDr. Maria Santos-Garcia
✓deprecated_age34
10/10 fields correct
Grok 4
41394ms98/100

All fields correct

✓schemaVersion2
✓firstNameDr. Maria
✓lastNameSantos-Garcia
✓emailmaria.sg@tufts-medical.edu
✓emailDomaintufts-medical.edu
✓birthYear1992
✓roleSenior Fellow
✓metadata.tags["cardiology","research","AI/ML"]
✓deprecated_fullNameDr. Maria Santos-Garcia
✓deprecated_age34
10/10 fields correct
Why this is hard: Name splitting: 'Dr.' is a title, NOT part of firstName. 'Santos-Garcia' is a hyphenated surname, NOT two last names. birthYear = 2026 - 34 = 1992. emailDomain must extract from the full email address. The 'AI/ML' tag has a slash — must be preserved as-is in the array. Deprecated fields must retain original values exactly.
25Logic / SchemaRecursive Tree Summarization
97★vs97
Input
Given this org tree, compute for EACH node: (1) total_reports = count of ALL descendants (direct + indirect), (2) total_salary_below = sum of all descendant salaries, (3) max_depth = deepest level below this node (leaf = 0). Return the tree with computed fields added.

{"name": "CEO Jane", "salary": 450000, "reports": [{"name": "VP Engineering Bob", "salary": 320000, "reports": [{"name": "Dir Platform Carol", "salary": 250000, "reports": [{"name": "Senior Eng Dan", "salary": 185000, "reports": []}, {"name": "Senior Eng Eve", "salary": 180000, "reports": [{"name": "Eng Intern Frank", "salary": 65000, "reports": []}]}]}, {"name": "Dir ML Grace", "salary": 260000, "reports": [{"name": "ML Eng Hank", "salary": 195000, "reports": []}]}]}, {"name": "VP Sales Iris", "salary": 310000, "reports": [{"name": "Dir Enterprise Jack", "salary": 240000, "reports": []}]}]}
Expected Output
{
  "name": "CEO Jane",
  "salary": 450000,
  "total_reports": 9,
  "total_salary_below": 2005000,
  "max_depth": 4,
  "reports": [
    {
      "name": "VP Engineering Bob",
      "salary": 320000,
      "total_reports": 6,
      "total_salary_below": 1135000,
      "max_depth": 3,
      "reports": [
        {
          "name": "Dir Platform Carol",
          "salary": 250000,
          "total_reports": 3,
          "total_salary_below": 430000,
          "max_depth": 2,
          "reports": [
            {
              "name": "Senior Eng Dan",
              "salary": 185000,
              "total_reports": 0,
              "total_salary_below": 0,
              "max_depth": 0,
              "reports": []
            },
            {
              "name": "Senior Eng Eve",
              "salary": 180000,
              "total_reports": 1,
              "total_salary_below": 65000,
              "max_depth": 1,
              "reports": [
                {
                  "name": "Eng Intern Frank",
                  "salary": 65000,
                  "total_reports": 0,
                  "total_salary_below": 0,
                  "max_depth": 0,
                  "reports": []
                }
              ]
            }
          ]
        },
        {
          "name": "Dir ML Grace",
          "salary": 260000,
          "total_reports": 1,
          "total_salary_below": 195000,
          "max_depth": 1,
          "reports": [
            {
              "name": "ML Eng Hank",
              "salary": 195000,
              "total_reports": 0,
              "total_salary_below": 0,
              "max_depth": 0,
              "reports": []
            }
          ]
        }
      ]
    },
    {
      "name": "VP Sales Iris",
      "salary": 310000,
      "total_reports": 1,
      "total_salary_below": 240000,
      "max_depth": 1,
      "reports": [
        {
          "name": "Dir Enterprise Jack",
          "salary": 240000,
          "total_reports": 0,
          "total_salary_below": 0,
          "max_depth": 0,
          "reports": []
        }
      ]
    }
  ]
}
Claude Opus 4.6
4892ms97/100

All fields correct

✓nameCEO Jane
✓salary450000
✓total_reports9
✓total_salary_below2005000
✓max_depth4
✓reports[{"name":"VP Engineering Bob","salary":320000,"total_reports":6,"total_salary_below":1135000,"max_depth":3,"reports":[{"name":"Dir Platform Carol","salary":250000,"total_reports":3,"total_salary_below":430000,"max_depth":2,"reports":[{"name":"Senior Eng Dan","salary":185000,"total_reports":0,"total_salary_below":0,"max_depth":0,"reports":[]},{"name":"Senior Eng Eve","salary":180000,"total_reports":1,"total_salary_below":65000,"max_depth":1,"reports":[]}]},{"name":"Dir ML Grace","salary":260000,"total_reports":1,"total_salary_below":195000,"max_depth":1,"reports":[{"name":"ML Eng Hank","salary":195000,"total_reports":0,"total_salary_below":0,"max_depth":0,"reports":[]}]}]},{"name":"VP Sales Iris","salary":310000,"total_reports":1,"total_salary_below":240000,"max_depth":1,"reports":[{"name":"Dir Enterprise Jack","salary":240000,"total_reports":0,"total_salary_below":0,"max_depth":0,"reports":[]}]}]
6/6 fields correct
Grok 4
50520ms97/100

All fields correct

✓nameCEO Jane
✓salary450000
✓total_reports9
✓total_salary_below2005000
✓max_depth4
✓reports[{"name":"VP Engineering Bob","salary":320000,"total_reports":6,"total_salary_below":1135000,"max_depth":3,"reports":[{"name":"Dir Platform Carol","salary":250000,"total_reports":3,"total_salary_below":430000,"max_depth":2,"reports":[{"name":"Senior Eng Dan","salary":185000,"total_reports":0,"total_salary_below":0,"max_depth":0,"reports":[]},{"name":"Senior Eng Eve","salary":180000,"total_reports":1,"total_salary_below":65000,"max_depth":1,"reports":[{"name":"Eng Intern Frank","salary":65000,"total_reports":0,"total_salary_below":0,"max_depth":0,"reports":[]}]}]},{"name":"Dir ML Grace","salary":260000,"total_reports":1,"total_salary_below":195000,"max_depth":1,"reports":[{"name":"ML Eng Hank","salary":195000,"total_reports":0,"total_salary_below":0,"max_depth":0,"reports":[]}]}]},{"name":"VP Sales Iris","salary":310000,"total_reports":1,"total_salary_below":240000,"max_depth":1,"reports":[{"name":"Dir Enterprise Jack","salary":240000,"total_reports":0,"total_salary_below":0,"max_depth":0,"reports":[]}]}]
6/6 fields correct
Why this is hard: CEO total_reports = 9 (all other people). total_salary_below for CEO = 320000+250000+185000+180000+65000+260000+195000+310000+240000 = 2,005,000. max_depth for CEO = 4 (Jane→Bob→Carol→Eve→Frank). Carol has 3 total_reports (Dan+Eve+Frank). Models commonly miscount indirect reports or miscalculate recursive sums.
ROI Analysis

Should you swap?

Cost Savings
40%

Grok 4 is 40% cheaper than Claude Opus 4.6

Claude Opus 4.6$10.00/1k
Grok 4$6.00/1k
Accuracy Gap
99.9%

as accurate (0.1pt gap)

Claude Opus 4.692.5%
Grok 492.6%
Recommendation
Safe to Swap

Accuracy gap is under 2%. Use Grok 4 to save 40% with virtually no quality loss.

Average Latency
Claude Opus 4.6
2,500ms
Grok 4
2,000ms
Accuracy by Domain

25 tasks across 5 domains

Claude Opus 4.6
Grok 4
E-commerce5 tasks
97.0
98.0
Legal5 tasks
89.0
88.6
Medical5 tasks
80.2
80.4
Finance5 tasks
97.2
96.8
Logic / Schema5 tasks
99.0
99.0
Overall Average
Claude Opus 4.6: 92.5Grok 4: 92.6
Failure Deep-Dive

Where models disagree

Tasks with the largest score gap between models - showing the actual outputs and expected values side by side.

E-commerce•Japanese Electronics with Voltage

Claude Opus 4.6 scored 88/100 vs Grok 4's 98/100

Input Text
Sony WH-1000XM5 ワイヤレスノイズキャンセリングヘッドホン ブラック — Bluetooth 5.3 / LDAC — 30hr Battery — 100V-240V AC Adapter — JAN: 4548736132351 — Japan Domestic Model
Claude Opus 4.688/100

“Incorrect/missing fields: type, color”

Grok 498/100

“All fields correct”

Field-by-Field Comparison
FieldExpectedClaude Opus 4.6Grok 4
brandSony✓Sony✓Sony
modelWH-1000XM5✓WH-1000XM5✓WH-1000XM5
typeWireless Noise Cancelling Headphones✗ワイヤレスノイズキャンセリングヘッドホン✓Wireless Noise Cancelling Headphones
colorBlack✗ブラック✓Black
bluetooth_version5.3✓5.3✓5.3
audio_codecLDAC✓LDAC✓LDAC
battery_hours30✓30✓30
voltage_range100V-240V✓100V-240V✓100V-240V
jan_code4548736132351✓4548736132351✓4548736132351
regionJapan Domestic✓Japan✓Japan
Why this task is hard:

The Japanese text ワイヤレスノイズキャンセリングヘッドホン must be translated to 'Wireless Noise Cancelling Headphones'. Color 'ブラック' = 'Black'. battery_hours must be integer. jan_code must be string (not number — leading zeros matter).

E-commerce•Ambiguous Color Extraction

Grok 4 scored 92/100 vs Claude Opus 4.6's 97/100

Input Text
Nike Air Max 97 OG QS "Metallic Gold" Bullet — Titanium Violet / Varsity Red — Men's US 10.5 — 2018 Retro Release
Claude Opus 4.697/100

“All fields correct”

Grok 492/100

“Incorrect/missing fields: edition”

Field-by-Field Comparison
FieldExpectedClaude Opus 4.6Grok 4
brandNike✓Nike✓Nike
modelAir Max 97 OG QS✓Air Max 97 OG QS✓Air Max 97
colorwayMetallic Gold✓Metallic Gold✓Metallic Gold Bullet
color_1Titanium Violet✓Titanium Violet✓Titanium Violet
color_2Varsity Red✓Varsity Red✓Varsity Red
sizeUS 10.5✓10.5✓US 10.5
genderMen's✓Men✓Men's
year2018✓2018✓2018
editionRetro Release✓Retro Release✗OG QS
Why this task is hard:

All 9 fields must be exact. 'Titanium Violet' must be extracted as a single compound color, NOT split into material + color. 'Metallic Gold' is the colorway nickname, not color_1.

Medical•Medication Reconciliation with Conflicts

Claude Opus 4.6 scored 60/100 vs Grok 4's 65/100

Input Text
MEDICATION RECONCILIATION — Inpatient Day 3. Current Orders: (1) Warfarin 5mg PO QD (for AFib — INR target 2.0-3.0, last INR 2.4 on 02/13). (2) Metoprolol Succinate 100mg PO QD. (3) Diltiazem ER 240mg PO QD. (4) Amiodarone 200mg PO QD (started 02/12 for rate-refractory AFib). (5) Fluconazole 400mg IV QD (Day 5 of 14 for candidemia). (6) Enoxaparin 80mg SQ Q12H (DVT prophylaxis — started before warfarin was therapeutic). (7) Acetaminophen 1000mg PO Q6H PRN. (8) Omeprazole 40mg PO QD. Home Medications NOT continued: Aspirin 81mg QD (held due to warfarin + enoxaparin = triple antithrombotic risk).
Claude Opus 4.660/100

“Incorrect/missing fields: potential_interactions, therapeutic_duplications”

Grok 465/100

“Incorrect/missing fields: potential_interactions, therapeutic_duplications”

Field-by-Field Comparison
FieldExpectedClaude Opus 4.6Grok 4
active_medications[{"name":"Warfarin","dose":"5mg","route":"PO","frequency":"QD","indication":"AFib"},{"name":"Metoprolol Succinate","dose":"100mg","route":"PO","frequency":"QD"},{"name":"Diltiazem ER","dose":"240mg","route":"PO","frequency":"QD"},{"name":"Amiodarone","dose":"200mg","route":"PO","frequency":"QD","indication":"Rate-refractory AFib","start_date":"02/12"},{"name":"Fluconazole","dose":"400mg","route":"IV","frequency":"QD","indication":"Candidemia","day":5,"total_days":14},{"name":"Enoxaparin","dose":"80mg","route":"SQ","frequency":"Q12H","indication":"DVT prophylaxis"},{"name":"Acetaminophen","dose":"1000mg","route":"PO","frequency":"Q6H","prn":true},{"name":"Omeprazole","dose":"40mg","route":"PO","frequency":"QD"}]✓[{"name":"Warfarin","dose":"5mg","route":"PO","frequency":"QD","indication":"Atrial fibrillation (INR target 2.0-3.0, last INR 2.4 on 02/13)"},{"name":"Metoprolol Succinate","dose":"100mg","route":"PO","frequency":"QD","indication":"Rate control for atrial fibrillation"},{"name":"Diltiazem ER","dose":"240mg","route":"PO","frequency":"QD","indication":"Rate control for atrial fibrillation"},{"name":"Amiodarone","dose":"200mg","route":"PO","frequency":"QD","indication":"Rate-refractory atrial fibrillation (started 02/12)"},{"name":"Fluconazole","dose":"400mg","route":"IV","frequency":"QD","indication":"Candidemia (Day 5 of 14)"},{"name":"Enoxaparin","dose":"80mg","route":"SQ","frequency":"Q12H","indication":"DVT prophylaxis (bridging - started before warfarin was therapeutic)"},{"name":"Acetaminophen","dose":"1000mg","route":"PO","frequency":"Q6H PRN","indication":"Pain/fever management"},{"name":"Omeprazole","dose":"40mg","route":"PO","frequency":"QD","indication":"Gastric acid suppression/GI prophylaxis"}]✓[{"name":"Warfarin","dose":"5mg","route":"PO","frequency":"QD","indication":"for AFib"},{"name":"Metoprolol Succinate","dose":"100mg","route":"PO","frequency":"QD","indication":"for AFib rate control"},{"name":"Diltiazem ER","dose":"240mg","route":"PO","frequency":"QD","indication":"for AFib rate control"},{"name":"Amiodarone","dose":"200mg","route":"PO","frequency":"QD","indication":"for rate-refractory AFib"},{"name":"Fluconazole","dose":"400mg","route":"IV","frequency":"QD","indication":"for candidemia"},{"name":"Enoxaparin","dose":"80mg","route":"SQ","frequency":"Q12H","indication":"DVT prophylaxis"},{"name":"Acetaminophen","dose":"1000mg","route":"PO","frequency":"Q6H PRN","indication":"pain or fever"},{"name":"Omeprazole","dose":"40mg","route":"PO","frequency":"QD","indication":"acid suppression"}]
held_medications[{"name":"Aspirin","dose":"81mg","reason":"Triple antithrombotic risk with warfarin + enoxaparin"}]✓[{"name":"Aspirin","dose":"81mg","reason":"Held due to concurrent warfarin + enoxaparin creating triple antithrombotic risk with excessive bleeding concern"}]✓[{"name":"Aspirin","dose":"81mg","reason":"held due to warfarin + enoxaparin = triple antithrombotic risk"}]
potential_interactions[{"drugs":["Warfarin","Fluconazole"],"severity":"Major","effect":"Fluconazole inhibits CYP2C9, significantly increasing warfarin levels and bleeding risk"},{"drugs":["Warfarin","Amiodarone"],"severity":"Major","effect":"Amiodarone inhibits CYP2C9/1A2/3A4, increasing warfarin effect — typical dose reduction 30-50%"},{"drugs":["Metoprolol","Diltiazem"],"severity":"Major","effect":"Additive AV nodal blockade — risk of severe bradycardia or heart block"},{"drugs":["Warfarin","Enoxaparin"],"severity":"High","effect":"Dual anticoagulation increases bleeding risk"}]✗[{"drugs":["Fluconazole","Warfarin"],"severity":"Major","effect":"Fluconazole is a potent CYP2C9 inhibitor and significantly increases warfarin levels, raising INR and risk of serious bleeding. Requires close INR monitoring and likely warfarin dose reduction."},{"drugs":["Amiodarone","Warfarin"],"severity":"Major","effect":"Amiodarone inhibits CYP2C9 and CYP3A4, significantly increasing warfarin effect and INR. Combined with fluconazole, this creates compounded risk of supratherapeutic INR. Warfarin dose reduction of 30-50% typically recommended."},{"drugs":["Warfarin","Enoxaparin"],"severity":"Major","effect":"Concurrent use of two anticoagulants substantially increases bleeding risk. Enoxaparin should be discontinued once INR is consistently therapeutic (2.0-3.0)."},{"drugs":["Metoprolol","Diltiazem"],"severity":"Major","effect":"Both are AV nodal blocking agents. Combined use increases risk of severe bradycardia, heart block, and hypotension. Requires close cardiac monitoring."},{"drugs":["Amiodarone","Metoprolol"],"severity":"Moderate","effect":"Amiodarone added to metoprolol increases risk of bradycardia, AV block, and hemodynamic compromise due to additive negative chronotropic and dromotropic effects."},{"drugs":["Amiodarone","Diltiazem"],"severity":"Moderate","effect":"Both agents slow AV nodal conduction; combined use increases risk of bradycardia and AV block."},{"drugs":["Omeprazole","Warfarin"],"severity":"Moderate","effect":"Omeprazole may inhibit CYP2C19 and potentially increase warfarin levels, though clinical significance is variable. Monitor INR."},{"drugs":["Amiodarone","Fluconazole"],"severity":"Moderate","effect":"Both drugs can prolong the QT interval; concurrent use increases the risk of QT prolongation and torsades de pointes. ECG monitoring recommended."}]✗[{"drugs":["Warfarin","Amiodarone"],"severity":"Major","effect":"Amiodarone potentiates the anticoagulant effect of warfarin, increasing the risk of bleeding."},{"drugs":["Warfarin","Fluconazole"],"severity":"Major","effect":"Fluconazole increases the anticoagulant effect of warfarin by inhibiting its metabolism."},{"drugs":["Warfarin","Enoxaparin"],"severity":"Major","effect":"Concurrent use increases the risk of bleeding due to additive anticoagulant effects."},{"drugs":["Amiodarone","Metoprolol Succinate"],"severity":"Moderate","effect":"Additive bradycardic effects, may lead to hypotension or heart block."},{"drugs":["Amiodarone","Diltiazem ER"],"severity":"Moderate","effect":"Additive effects on AV conduction, risk of bradycardia."},{"drugs":["Metoprolol Succinate","Diltiazem ER"],"severity":"Moderate","effect":"Additive negative effects on heart rate and contractility."},{"drugs":["Warfarin","Acetaminophen"],"severity":"Moderate","effect":"High doses of acetaminophen may increase INR and bleeding risk."}]
therapeutic_duplications[{"category":"Rate control","drugs":["Metoprolol","Diltiazem","Amiodarone"],"note":"Triple rate control — assess need for all three"}]✗[{"category":"AV Nodal Blocking Agents / Rate Control","drugs":["Metoprolol Succinate","Diltiazem ER","Amiodarone"],"note":"Three agents with AV nodal blocking and rate-controlling properties are prescribed concurrently. This significantly increases the risk of severe bradycardia and heart block. Consider whether all three are necessary or if one can be tapered/discontinued."},{"category":"Anticoagulants","drugs":["Warfarin","Enoxaparin"],"note":"Two anticoagulants are active simultaneously. Enoxaparin was started as bridging therapy before warfarin reached therapeutic INR (last INR 2.4 is now in range). Assess for discontinuation of enoxaparin if INR remains consistently therapeutic."}]✗[{"category":"Anticoagulants","drugs":["Warfarin","Enoxaparin"],"note":"Used for bridging therapy until warfarin is therapeutic, but increases bleeding risk."},{"category":"Rate control agents","drugs":["Metoprolol Succinate","Diltiazem ER","Amiodarone"],"note":"Multiple agents for rate control in AFib; monitor for excessive bradycardia."}]
Why this task is hard:

Must identify ALL 4 major drug interactions. The Warfarin-Fluconazole CYP2C9 interaction is frequently missed by smaller models. Metoprolol+Diltiazem dual AV nodal blockade must be flagged. Aspirin is HELD, not active. Acetaminophen must be marked PRN.

Legal•Indemnification Cap Extraction

Grok 4 scored 81/100 vs Claude Opus 4.6's 84/100

Input Text
MASTER SERVICES AGREEMENT dated January 15, 2026. Section 8.2 (Limitation of Liability): Except for Vendor's indemnification obligations under Section 9.1 and breaches of Section 12 (Confidentiality), in no event shall either party's aggregate liability under this Agreement exceed the greater of (a) the total fees paid or payable by Client in the twelve (12) month period immediately preceding the event giving rise to the claim, or (b) Five Hundred Thousand Dollars ($500,000). Notwithstanding the foregoing, Vendor's aggregate liability for indemnification claims under Section 9.1 shall not exceed Two Million Dollars ($2,000,000). Section 8.3: IN NO EVENT SHALL EITHER PARTY BE LIABLE FOR ANY INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL, OR PUNITIVE DAMAGES, REGARDLESS OF THE CAUSE OF ACTION OR THEORY OF LIABILITY, EVEN IF SUCH PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. The foregoing limitation shall not apply to breaches of Section 12 (Confidentiality) or willful misconduct.
Claude Opus 4.684/100

“Incorrect/missing fields: general_liability_cap, general_liability_basis”

Grok 481/100

“Incorrect/missing fields: general_liability_cap, general_liability_basis”

Field-by-Field Comparison
FieldExpectedClaude Opus 4.6Grok 4
general_liability_cap$500,000✗The greater of (a) total fees paid or payable by Client in the twelve (12) month period immediately preceding the event giving rise to the claim, or (b) Five Hundred Thousand Dollars ($500,000)✗the greater of (a) the total fees paid or payable by Client in the twelve (12) month period immediately preceding the event giving rise to the claim, or (b) Five Hundred Thousand Dollars ($500,000)
general_liability_basisGreater of 12-month fees or $500,000✗Trailing 12-month fees paid or payable, or $500,000 floor (whichever is greater)✗aggregate
indemnification_cap$2,000,000✓Two Million Dollars ($2,000,000)✓Two Million Dollars ($2,000,000)
indemnification_section9.1✓Section 9.1✓9.1
consequential_damages_excludedtrue✓true✓true
consequential_damages_exceptions["Confidentiality breaches","Willful misconduct"]✓["Breaches of Section 12 (Confidentiality)","Willful misconduct"]✓["breaches of Section 12 (Confidentiality)","willful misconduct"]
liability_cap_exceptions["Indemnification under Section 9.1","Confidentiality under Section 12"]✓["Vendor's indemnification obligations under Section 9.1","Breaches of Section 12 (Confidentiality)"]✓["Vendor's indemnification obligations under Section 9.1","breaches of Section 12 (Confidentiality)"]
Why this task is hard:

Must correctly distinguish the GENERAL liability cap ($500,000) from the INDEMNIFICATION cap ($2,000,000). Must identify both exceptions to the consequential damages waiver. Models often conflate the two caps or miss the 'notwithstanding' override.

Medical•Acute vs Chronic Symptom Classification

Grok 4 scored 89/100 vs Claude Opus 4.6's 92/100

Input Text
Patient: Female, 67yo, presents to ED with acute onset chest pain (started 2 hours ago, 8/10 severity, substernal, radiating to left arm), on a background of chronic stable angina (diagnosed 2019, managed with isosorbide mononitrate 60mg QD). History of Type 2 DM (HbA1c 7.2%, on metformin 1000mg BID + empagliflozin 25mg QD), hypertension (BP 168/94 on arrival, home meds: amlodipine 10mg + lisinopril 40mg), and previous NSTEMI (March 2023). Allergies: Aspirin (urticaria), Atorvastatin (myalgia — switched to rosuvastatin 20mg). Current vitals: HR 96 bpm, RR 22, SpO2 94% on RA, Temp 36.8°C.
Claude Opus 4.692/100

“Incorrect/missing fields: chronic_conditions”

Grok 489/100

“Incorrect/missing fields: chronic_conditions, chief_complaint”

Field-by-Field Comparison
FieldExpectedClaude Opus 4.6Grok 4
demographics.sexFemale✓Female✓Female
demographics.age67✓67✓67
chief_complaintAcute onset chest pain✓Acute onset chest pain✗chest pain
presenting_symptoms[{"symptom":"Chest pain","onset":"Acute","duration":"2 hours","severity":"8/10","location":"Substernal","radiation":"Left arm"}]✓[{"symptom":"Chest pain","onset":"2 hours ago","duration":"2 hours","severity":"8/10","location":"Substernal","radiation":"Left arm"}]✓[{"symptom":"chest pain","onset":"started 2 hours ago","duration":"2 hours","severity":"8/10","location":"substernal","radiation":"to left arm"}]
chronic_conditions[{"condition":"Chronic stable angina","diagnosed":"2019","status":"Managed"},{"condition":"Type 2 Diabetes Mellitus","marker":"HbA1c 7.2%"},{"condition":"Hypertension","current_bp":"168/94"},{"condition":"Previous NSTEMI","date":"March 2023"}]✗[{"condition":"Chronic stable angina","diagnosed":"2019","status":"Managed with isosorbide mononitrate"},{"condition":"Type 2 Diabetes Mellitus","diagnosed":"Unknown","status":"HbA1c 7.2%, managed with metformin and empagliflozin"},{"condition":"Hypertension","diagnosed":"Unknown","status":"BP 168/94 on arrival, on amlodipine and lisinopril"},{"condition":"Previous NSTEMI","diagnosed":"March 2023","status":"History of prior event"}]✗[{"condition":"chronic stable angina","diagnosed":"2019","status":"stable"},{"condition":"Type 2 diabetes mellitus","diagnosed":"unknown","status":"managed"},{"condition":"hypertension","diagnosed":"unknown","status":"managed"},{"condition":"NSTEMI","diagnosed":"March 2023","status":"previous"}]
medications[{"name":"Isosorbide mononitrate","dose":"60mg","frequency":"QD","indication":"Angina"},{"name":"Metformin","dose":"1000mg","frequency":"BID","indication":"Diabetes"},{"name":"Empagliflozin","dose":"25mg","frequency":"QD","indication":"Diabetes"},{"name":"Amlodipine","dose":"10mg","frequency":"QD","indication":"Hypertension"},{"name":"Lisinopril","dose":"40mg","frequency":"QD","indication":"Hypertension"},{"name":"Rosuvastatin","dose":"20mg","frequency":"QD","indication":"Cholesterol"}]✓[{"name":"Isosorbide mononitrate","dose":"60mg","frequency":"QD","indication":"Chronic stable angina"},{"name":"Metformin","dose":"1000mg","frequency":"BID","indication":"Type 2 Diabetes Mellitus"},{"name":"Empagliflozin","dose":"25mg","frequency":"QD","indication":"Type 2 Diabetes Mellitus"},{"name":"Amlodipine","dose":"10mg","frequency":"QD","indication":"Hypertension"},{"name":"Lisinopril","dose":"40mg","frequency":"QD","indication":"Hypertension"},{"name":"Rosuvastatin","dose":"20mg","frequency":"QD","indication":"Hyperlipidemia (switched from atorvastatin)"}]✓[{"name":"isosorbide mononitrate","dose":"60mg","frequency":"QD","indication":"angina"},{"name":"metformin","dose":"1000mg","frequency":"BID","indication":"Type 2 diabetes mellitus"},{"name":"empagliflozin","dose":"25mg","frequency":"QD","indication":"Type 2 diabetes mellitus"},{"name":"amlodipine","dose":"10mg","frequency":"QD","indication":"hypertension"},{"name":"lisinopril","dose":"40mg","frequency":"QD","indication":"hypertension"},{"name":"rosuvastatin","dose":"20mg","frequency":"QD","indication":"dyslipidemia"}]
allergies[{"drug":"Aspirin","reaction":"Urticaria"},{"drug":"Atorvastatin","reaction":"Myalgia","note":"Switched to rosuvastatin"}]✓[{"drug":"Aspirin","reaction":"Urticaria"},{"drug":"Atorvastatin","reaction":"Myalgia"}]✓[{"drug":"Aspirin","reaction":"urticaria"},{"drug":"Atorvastatin","reaction":"myalgia"}]
vitals.hr_bpm96✓96✓96
vitals.rr22✓22✓22
vitals.spo2_percent94✓94✓94
vitals.temp_celsius36.8✓36.8✓36.8
Why this task is hard:

Chest pain is ACUTE (2 hours), angina is CHRONIC (2019). Models must not merge these. All 6 medications must be extracted with correct frequency. Atorvastatin is an ALLERGY not a current medication. Rosuvastatin is the replacement. Vitals must be numeric.

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