Compare published benchmark results from matching versions and cohorts, API pricing, and technical specifications. Any documented test setup differences remain visible.
shared result series
236
distinct benchmarks
27
latest retrieval
2026-09-04
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Specifications
General specifications
Release date, availability, context window, architecture, and published parameter counts at a glance. Undisclosed details remain marked as unavailable.
The table compares official standard API rates per 1M tokens, including published cache pricing. Batch, fast, priority, regional surcharges, tool calls, and cloud platform pricing are excluded.
Key to the marks:better valuebetter, but not conclusivetie
Pricing by provider
Direct developer pricing and provider endpoint tariffs routed through OpenRouter are listed separately. Prices are in USD per 1M tokens. Context-dependent direct tiers plus regional, Flex, Priority, and other OpenRouter tariffs remain individually identifiable.
Only published results with the same benchmark version, task, metric, and comparison cohort are paired. Different reasoning levels, agents, harnesses, or output limits appear directly in the table.
Capability profile from matched benchmarks
Each axis averages directly matched benchmark families. A value of 100 means the stronger value within this pair, not a universal quality score.
GPT-5.5
Grok 4.3
Coding: 100 / 54.5 (6 benchmark families)
Reasoning: 100 / 97.5 (2 benchmark families)
Mathematics: 100 / 95.1 (1 benchmark family)
Knowledge: 100 / 97.3 (2 benchmark families)
Finance: 100 / 77.1 (6 benchmark families)
Legal: 100 / 60.9 (4 benchmark families)
Agentic tasks: 100 / 61.2 (2 benchmark families)
Multimodal: 100 / 94.1 (1 benchmark family)
59 matched rows from 26 benchmark families were considered. The radar shows 8 of 14 comparable categories.
GPT-5.5Grok 4.3
Code MigrationOverall. Higher is better. No documented setup difference
GPT-5.5Winner45.161 %
Grok 4.36.795 %
CorpFin v2Overall. Higher is better. No documented setup difference
GPT-5.568.415 %
Grok 4.3Winner68.532 %
CyberBenchOverall. Higher is better. No documented setup difference
GPT-5.5Winner80.508 %
Grok 4.347.457 %
EMBOverall. Higher is better. No documented setup difference
GPT-5.5Winner64.543 %
Grok 4.318.394 %
Finance Agent (v2)Overall. Higher is better. No documented setup difference
GPT-5.5Winner51.76 %
Grok 4.337.728 %
GPQA DiamondOverall. Higher is better. No documented setup difference
GPT-5.5Winner93.182 %
Grok 4.391.414 %
Harvey's Legal Agent BenchmarkOverall · Task fully resolved. Higher is better. No documented setup difference
GPT-5.5Winner3.75 %
Grok 4.30.417 %
Legal Research BenchOverall · All-pass. Higher is better. No documented setup difference
GPT-5.5Winner40.385 %
Grok 4.315.385 %
LegalBenchOverall. Higher is better. No documented setup difference
GPT-5.5Winner86.515 %
Grok 4.384.458 %
LiveCodeBench v6Overall. Higher is better. No documented setup difference
GPT-5.5Winner85.296 %
Grok 4.384.494 %
LMArena Text, Style ControlOverall. Higher is better. No documented setup difference
GPT-5.5Winner1,477.235
Grok 4.31,442.599
MedCodeOverall. Higher is better. No documented setup difference
GPT-5.5Winner49.1 %
Grok 4.338.068 %
Key to the marks:better valuebetter, but not conclusivetie
Benchmark scores for GPT-5.5 and Grok 4.3
Benchmark and task
GPT-5.5
Grok 4.3
Source
Code MigrationOverallTest details
No documented difference in the test setupVersion: 1Metric: accuracyScoring: Higher is better
No documented difference in the test setupVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterGPT-5.5: Snapshot: gpt-5.5, Harness: Arena text, style control Grok 4.3: Snapshot: grok-4.3, Harness: Arena text, style controlGPT-5.5: Style-controlled Arena rating from 64,686 anonymous pairwise votes.Grok 4.3: Style-controlled Arena rating from 65,024 anonymous pairwise votes.
Winner1,477.235
95% confidence interval: ±3.839The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
1,442.599
95% confidence interval: ±3.771The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
Test setup not documented as identicalNo direct winnerVersion: 1Metric: accuracyScoring: Higher is betterGPT-5.5: Reasoning: xhigh, Output limit: 128,000 tokens Grok 4.3: Reasoning: high, Temperature: 0.7, Top P: 0.95
Test setup not documented as identicalNo direct winnerVersion: 2Metric: accuracyScoring: Higher is betterGPT-5.5: Reasoning: xhigh, Output limit: 128,000 tokens Grok 4.3: Temperature: 0.7, Top P: 0.95
Test setup not documented as identicalNo direct winnerVersion: 1Metric: accuracyScoring: Higher is betterGPT-5.5: Reasoning: xhigh, Output limit: 128,000 tokens Grok 4.3: Reasoning: high, Temperature: 0.7, Top P: 0.95
Test setup not documented as identicalNo direct winnerVersion: 2Metric: accuracyScoring: Higher is betterGPT-5.5: Reasoning: xhigh, Output limit: 128,000 tokens Grok 4.3: Reasoning: high, Temperature: 0.7, Top P: 0.95
Test setup not documented as identicalNo direct winnerVersion: 1Metric: accuracyScoring: Higher is betterGPT-5.5: Reasoning: xhigh, Output limit: 128,000 tokens Grok 4.3: Temperature: 0.7, Top P: 0.95
Test setup not documented as identicalNo direct winnerVersion: 1Metric: criteria pass rateScoring: Higher is betterGPT-5.5: Reasoning: xhigh, Output limit: 128,000 tokens Grok 4.3: Reasoning: high, Temperature: 0.7, Top P: 0.95
Legal Research BenchAdministrative / Regulatory · All-passTest details
Test setup not documented as identicalNo direct winnerVersion: 1Metric: all-pass rateScoring: Higher is betterGPT-5.5: Reasoning: xhigh, Output limit: 128,000 tokens Grok 4.3: Reasoning: high, Temperature: 0.7, Top P: 0.95
Test setup not documented as identicalNo direct winnerVersion: 1Metric: accuracyScoring: Higher is betterGPT-5.5: Reasoning: xhigh, Output limit: 128,000 tokens Grok 4.3: Temperature: 0.7, Top P: 0.95
Test setup not documented as identicalNo direct winnerVersion: 1Metric: accuracyScoring: Higher is betterGPT-5.5: Reasoning: xhigh, Output limit: 128,000 tokens Grok 4.3: Temperature: 0.7, Top P: 0.95
Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterGPT-5.5: Snapshot: gpt-5.5-high, Reasoning: high, Harness: Arena text, style control Grok 4.3: Snapshot: grok-4.3, Harness: Arena text, style controlGPT-5.5: Style-controlled Arena rating from 63,265 anonymous pairwise votes.Grok 4.3: Style-controlled Arena rating from 65,024 anonymous pairwise votes.
Higher measured value1,482.334
95% confidence interval: ±3.856The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
1,442.599
95% confidence interval: ±3.771The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
Test setup not documented as identicalNo direct winnerVersion: 1Metric: accuracyScoring: Higher is betterGPT-5.5: Reasoning: xhigh, Output limit: 128,000 tokens Grok 4.3: Temperature: 0.7, Top P: 0.95
Test setup not documented as identicalNo direct winnerVersion: 1Metric: accuracyScoring: Higher is betterGPT-5.5: Reasoning: xhigh, Output limit: 128,000 tokens Grok 4.3: Temperature: 0.7, Top P: 0.95, Output limit: 256,000 tokens
Test setup not documented as identicalNo direct winnerVersion: 1Metric: accuracyScoring: Higher is betterGPT-5.5: Reasoning: xhigh, Output limit: 128,000 tokens Grok 4.3: Reasoning: high, Temperature: 0.7, Top P: 0.95
Test setup not documented as identicalNo direct winnerVersion: 1Metric: accuracyScoring: Higher is betterGPT-5.5: Reasoning: xhigh, Output limit: 128,000 tokens Grok 4.3: Reasoning: high, Temperature: 0.7, Top P: 0.95
Test setup not documented as identicalNo direct winnerVersion: 2Metric: accuracyScoring: Higher is betterGPT-5.5: Reasoning: xhigh, Output limit: 128,000 tokens Grok 4.3: Temperature: 0.7, Top P: 0.95
Test setup not documented as identicalNo direct winnerVersion: 2.0Metric: accuracyScoring: Higher is betterGPT-5.5: Reasoning: high, Output limit: 128,000 tokens Grok 4.3: Temperature: 0.7, Top P: 0.95
Test setup not documented as identicalNo direct winnerVersion: 2.1Metric: accuracyScoring: Higher is betterGPT-5.5: Reasoning: high, Output limit: 128,000 tokens Grok 4.3: Reasoning: high, Temperature: 0.7, Top P: 0.95
Test setup not documented as identicalNo direct winnerVersion: 1.2Metric: benchmark scoreScoring: Higher is betterGPT-5.5: Reasoning: xhigh, Output limit: 128,000 tokens Grok 4.3: Reasoning: high, Temperature: 0.7, Top P: 0.95
Test setup not documented as identicalNo direct winnerVersion: 1.2Metric: benchmark scoreScoring: Higher is betterGPT-5.5: Reasoning: xhigh, Output limit: 128,000 tokens Grok 4.3: Reasoning: high, Temperature: 0.7, Top P: 0.95
Test setup not documented as identicalNo direct winnerVersion: 1Metric: accuracyScoring: Higher is betterGPT-5.5: Reasoning: xhigh, Output limit: 128,000 tokens Grok 4.3: Reasoning: high, Temperature: 0.7, Top P: 0.95
Test setup not documented as identicalNo direct winnerVersion: 2Metric: accuracyScoring: Higher is betterGPT-5.5: Reasoning: xhigh, Output limit: 128,000 tokens Grok 4.3: Temperature: 0.7, Top P: 0.95
Test setup not documented as identicalNo direct winnerVersion: 1Metric: accuracyScoring: Higher is betterGPT-5.5: Reasoning: xhigh, Output limit: 128,000 tokens Grok 4.3: Reasoning: high, Temperature: 0.7, Top P: 0.95
Test setup not documented as identicalNo direct winnerVersion: 2Metric: accuracyScoring: Higher is betterGPT-5.5: Reasoning: xhigh, Output limit: 128,000 tokens Grok 4.3: Reasoning: high, Temperature: 0.7, Top P: 0.95
Test setup not documented as identicalNo direct winnerVersion: 1Metric: accuracyScoring: Higher is betterGPT-5.5: Reasoning: xhigh, Output limit: 128,000 tokens Grok 4.3: Temperature: 0.7, Top P: 0.95
Test setup not documented as identicalNo direct winnerVersion: 1Metric: task resolution rateScoring: Higher is betterGPT-5.5: Reasoning: xhigh, Output limit: 128,000 tokens Grok 4.3: Reasoning: high, Temperature: 0.7, Top P: 0.95
Legal Research BenchAdministrative / Regulatory · Weighted partial creditTest details
Test setup not documented as identicalNo direct winnerVersion: 1Metric: weighted partial-credit scoreScoring: Higher is betterGPT-5.5: Reasoning: xhigh, Output limit: 128,000 tokens Grok 4.3: Reasoning: high, Temperature: 0.7, Top P: 0.95
Test setup not documented as identicalNo direct winnerVersion: 1Metric: accuracyScoring: Higher is betterGPT-5.5: Reasoning: xhigh, Output limit: 128,000 tokens Grok 4.3: Temperature: 0.7, Top P: 0.95
Test setup not documented as identicalNo direct winnerVersion: 1Metric: accuracyScoring: Higher is betterGPT-5.5: Reasoning: xhigh, Output limit: 128,000 tokens Grok 4.3: Temperature: 0.7, Top P: 0.95
LMArena Text, Style ControlBusiness, management and financeTest details
No documented difference in the test setupVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterGPT-5.5: Snapshot: gpt-5.5, Harness: Arena text, style control Grok 4.3: Snapshot: grok-4.3, Harness: Arena text, style controlGPT-5.5: Style-controlled Arena rating from 12,904 anonymous pairwise votes.Grok 4.3: Style-controlled Arena rating from 13,131 anonymous pairwise votes.
Winner1,485.915
95% confidence interval: ±6.577The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
1,439.103
95% confidence interval: ±6.526The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
Test setup not documented as identicalNo direct winnerVersion: 1Metric: accuracyScoring: Higher is betterGPT-5.5: Reasoning: xhigh, Output limit: 128,000 tokens Grok 4.3: Temperature: 0.7, Top P: 0.95
Test setup not documented as identicalNo direct winnerVersion: 1Metric: accuracyScoring: Higher is betterGPT-5.5: Reasoning: xhigh, Output limit: 128,000 tokens Grok 4.3: Temperature: 0.7, Top P: 0.95, Output limit: 256,000 tokens
Test setup not documented as identicalNo direct winnerVersion: 1Metric: accuracyScoring: Higher is betterGPT-5.5: Reasoning: xhigh, Output limit: 128,000 tokens Grok 4.3: Reasoning: high, Temperature: 0.7, Top P: 0.95
Test setup not documented as identicalNo direct winnerVersion: 1Metric: accuracyScoring: Higher is betterGPT-5.5: Reasoning: xhigh, Temperature: 1 Grok 4.3: Temperature: 1, Top P: 0.95, Output limit: 30,000 tokens
Key to the marks:better valuebetter, but not conclusivetie
Our model tests
Community tests you can inspect
Compare how the models respond to the same prompt. Each test shows the first attempt, with no subsequent fixes to the generated code. These results do not contribute to an overall score.
Pelican on a bicycle
A community classic for free-form SVG drawing.
GPT-5.5
The API response was not fully received. The model was not evaluated.
First attempt
Run date
7 Sept 2026
API provider
openrouter
Requested API model
openai/gpt-5.5
Pinned endpoint
OpenAI | openai/gpt-5.5-20260423
Reasoning setting
high
Temperature
Provider default
Token limit including reasoning
8,192 tokens
Test protocol
community-visual-tests-v1
Technical checks
Failed
Not yet visually reviewed. A successful recording does not confirm correct physics or full compliance with the prompt.
Grok 4.3
A community classic for free-form SVG drawing.First attempt
Run date
7 Sept 2026
API provider
openrouter
Requested API model
x-ai/grok-4.3
API model reported in response
x-ai/grok-4.3
Pinned endpoint
xAI | x-ai/grok-4.3-20260430
Reasoning setting
high
Temperature
Provider default
Token limit including reasoning
8,192 tokens
Test protocol
community-visual-tests-v1
Technical checks
Passed, not a quality rating
Response time
149 s
Visually reviewed. This individual test does not establish overall model quality.
Your workload, budget, and required context length matter most. A coding benchmark says little about visual understanding or agent performance.
The standard price table uses direct developer rates. The provider comparison labels OpenRouter endpoints, regions, and special tariffs separately.
Every result links to its measurement source and retrieval date. Labels distinguish vendor reports, official benchmark leaderboards, and independent evaluations. Disputed or archived results are excluded.
More matchups
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Compare GPT-5.5 and Grok 4.3 with other leading models using the same data and benchmark logic.
