Compare published benchmark results from matching versions and cohorts, API pricing, and technical specifications. Any documented test setup differences remain visible.
shared result series
229
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
Kimi K3
Coding: 78.7 / 87.1 (5 benchmark families)
Reasoning: 100 / 99.7 (1 benchmark family)
Knowledge: 100 / 99.8 (1 benchmark family)
Finance: 97.4 / 99.3 (5 benchmark families)
Legal: 75.3 / 99.8 (3 benchmark families)
Agentic tasks: 97.2 / 81 (2 benchmark families)
Multimodal: 100 / 99.9 (1 benchmark family)
Productivity: 89.2 / 100 (1 benchmark family)
27 matched rows from 25 benchmark families were considered. The radar shows 8 of 12 comparable categories.
GPT-5.5Kimi K3
AlmanBench v0.1Accepted cases. Higher is better. Test setup not documented as identical
GPT-5.5Higher measured value95.432 %
Kimi K390.962 %
Code MigrationOverall. Higher is better. No documented setup difference
GPT-5.5Winner45.161 %
Kimi K316.099 %
CorpFin v2Overall. Higher is better. No documented setup difference
GPT-5.568.415 %
Kimi K3Winner71.562 %
CyberBenchOverall. Higher is better. No documented setup difference
GPT-5.5Winner80.508 %
Kimi K379.026 %
EMBOverall. Higher is better. No documented setup difference
GPT-5.564.543 %
Kimi K3Winner66.399 %
Finance Agent (v2)Overall. Higher is better. No documented setup difference
GPT-5.551.76 %
Kimi K3Winner54.36 %
GPQA DiamondOverall. Higher is better. No documented setup difference
GPT-5.5Winner93.182 %
Kimi K392.929 %
Harvey's Legal Agent BenchmarkOverall · Task fully resolved. Higher is better. No documented setup difference
GPT-5.53.75 %
Kimi K3Winner10.833 %
Legal Research BenchOverall · All-pass. Higher is better. No documented setup difference
GPT-5.540.385 %
Kimi K3Winner44.231 %
LegalBenchOverall. Higher is better. No documented setup difference
GPT-5.5Winner86.515 %
Kimi K386.016 %
LiveCodeBench v6Overall. Higher is better. No documented setup difference
GPT-5.585.296 %
Kimi K3Winner87.185 %
LMArena Text, Style ControlOverall. Higher is better. Test setup not documented as identical
GPT-5.51,477.235
Kimi K3Higher measured value1,489.017
Key to the marks:better valuebetter, but not conclusivetie
Benchmark scores for GPT-5.5 and Kimi K3
Benchmark and task
GPT-5.5
Kimi K3
Source
AlmanBench v0.1Accepted casesTest details
Test setup not documented as identicalNo direct winnerVersion: v0.1, results commit f34ddbfMetric: accepted casesScoring: Higher is betterGPT-5.5: Reasoning: xhigh Kimi K3: Reasoning: max1,029 public tasks with one direct run per row. The target is the Alman language specification.
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, Harness: Arena text, style control Kimi K3: Snapshot: kimi-k3-max, Reasoning: max, Harness: Arena text, style controlGPT-5.5: Style-controlled Arena rating from 64,686 anonymous pairwise votes.Kimi K3: Style-controlled Arena rating from 17,895 anonymous pairwise votes.
1,477.235
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.
Higher measured value1,489.017
95% confidence interval: ±5.47The 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: 2Metric: accuracyScoring: Higher is betterGPT-5.5: Reasoning: xhigh, Output limit: 128,000 tokens Kimi K3: Temperature: 1, Output limit: 262,144 tokens
Test setup not documented as identicalNo direct winnerVersion: 1Metric: accuracyScoring: Higher is betterKimi K3: Temperature: 1, Output limit: 262,144 tokens
Test setup not documented as identicalNo direct winnerVersion: 1Metric: accuracyScoring: Higher is betterGPT-5.5: Reasoning: xhigh, Output limit: 128,000 tokens Kimi K3: Temperature: 1, Output limit: 262,144 tokens
Test setup not documented as identicalNo direct winnerVersion: 2Metric: accuracyScoring: Higher is betterGPT-5.5: Reasoning: xhigh, Output limit: 128,000 tokens Kimi K3: Temperature: 1, Output limit: 262,144 tokens
Test setup not documented as identicalNo direct winnerVersion: 1Metric: accuracyScoring: Higher is betterGPT-5.5: Reasoning: xhigh, Output limit: 128,000 tokens Kimi K3: Temperature: 1, Output limit: 262,144 tokens
Test setup not documented as identicalNo direct winnerVersion: 1Metric: criteria pass rateScoring: Higher is betterGPT-5.5: Reasoning: xhigh, Output limit: 128,000 tokens Kimi K3: Temperature: 1, Output limit: 262,144 tokens
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 Kimi K3: Temperature: 1, Output limit: 262,144 tokens
Test setup not documented as identicalNo direct winnerVersion: 1Metric: accuracyScoring: Higher is betterGPT-5.5: Reasoning: xhigh, Output limit: 128,000 tokens Kimi K3: Temperature: 1, Output limit: 262,144 tokens
Test setup not documented as identicalNo direct winnerVersion: 1Metric: accuracyScoring: Higher is betterGPT-5.5: Reasoning: xhigh, Output limit: 128,000 tokens Kimi K3: Temperature: 1, Output limit: 262,144 tokens
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 Kimi K3: Snapshot: kimi-k3-max, Reasoning: max, Harness: Arena text, style controlGPT-5.5: Style-controlled Arena rating from 63,265 anonymous pairwise votes.Kimi K3: Style-controlled Arena rating from 17,895 anonymous pairwise votes.
1,482.334
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.
Higher measured value1,489.017
95% confidence interval: ±5.47The 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 Kimi K3: Temperature: 1, Output limit: 262,144 tokens
Test setup not documented as identicalNo direct winnerVersion: 1Metric: accuracyScoring: Higher is betterGPT-5.5: Reasoning: xhigh, Output limit: 128,000 tokens Kimi K3: Temperature: 1, Output limit: 262,144 tokens
Test setup not documented as identicalNo direct winnerVersion: 1Metric: accuracyScoring: Higher is betterGPT-5.5: Reasoning: xhigh, Output limit: 128,000 tokens Kimi K3: Temperature: 1, Output limit: 262,144 tokens
Test setup not documented as identicalNo direct winnerVersion: 1Metric: accuracyScoring: Higher is betterGPT-5.5: Reasoning: xhigh, Temperature: 1, Output limit: 30,000 tokens Kimi K3: Temperature: 1, Output limit: 30,000 tokens
Test setup not documented as identicalNo direct winnerVersion: 1Metric: accuracyScoring: Higher is betterGPT-5.5: Reasoning: xhigh, Output limit: 128,000 tokens Kimi K3: Temperature: 1, Output limit: 262,144 tokens
Test setup not documented as identicalNo direct winnerVersion: 2Metric: accuracyScoring: Higher is betterGPT-5.5: Reasoning: xhigh, Output limit: 128,000 tokens Kimi K3: Temperature: 1, Output limit: 262,144 tokens
Test setup not documented as identicalNo direct winnerVersion: 2.1Metric: accuracyScoring: Higher is betterGPT-5.5: Reasoning: high, Output limit: 128,000 tokens Kimi K3: Temperature: 1, Output limit: 262,144 tokens
Time Horizon Index: KSPProgress efficiencyTest details
Test setup not documented as identicalNo direct winnerVersion: 1Metric: progressScoring: Higher is betterGPT-5.5: Reasoning: xhigh, Output limit: 128,000 tokens Kimi K3: Temperature: 1, Output limit: 262,144 tokens
Test setup not documented as identicalNo direct winnerVersion: 1.2Metric: benchmark scoreScoring: Higher is betterGPT-5.5: Reasoning: xhigh, Output limit: 128,000 tokens Kimi K3: Temperature: 1, Output limit: 262,144 tokens
Test setup not documented as identicalNo direct winnerVersion: 1.2Metric: benchmark scoreScoring: Higher is betterGPT-5.5: Reasoning: xhigh, Output limit: 128,000 tokens Kimi K3: Temperature: 1, Output limit: 262,144 tokens
Test setup not documented as identicalNo direct winnerVersion: 2Metric: accuracyScoring: Higher is betterGPT-5.5: Reasoning: xhigh, Output limit: 128,000 tokens Kimi K3: Temperature: 1, Output limit: 262,144 tokens
Test setup not documented as identicalNo direct winnerVersion: 1Metric: accuracyScoring: Higher is betterKimi K3: Temperature: 1, Output limit: 262,144 tokens
Test setup not documented as identicalNo direct winnerVersion: 1Metric: accuracyScoring: Higher is betterGPT-5.5: Reasoning: xhigh, Output limit: 128,000 tokens Kimi K3: Temperature: 1, Output limit: 262,144 tokens
Test setup not documented as identicalNo direct winnerVersion: 2Metric: accuracyScoring: Higher is betterGPT-5.5: Reasoning: xhigh, Output limit: 128,000 tokens Kimi K3: Temperature: 1, Output limit: 262,144 tokens
Test setup not documented as identicalNo direct winnerVersion: 1Metric: accuracyScoring: Higher is betterGPT-5.5: Reasoning: xhigh, Output limit: 128,000 tokens Kimi K3: Temperature: 1, Output limit: 262,144 tokens
Test setup not documented as identicalNo direct winnerVersion: 1Metric: task resolution rateScoring: Higher is betterGPT-5.5: Reasoning: xhigh, Output limit: 128,000 tokens Kimi K3: Temperature: 1, Output limit: 262,144 tokens
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 Kimi K3: Temperature: 1, Output limit: 262,144 tokens
Test setup not documented as identicalNo direct winnerVersion: 1Metric: accuracyScoring: Higher is betterGPT-5.5: Reasoning: xhigh, Output limit: 128,000 tokens Kimi K3: Temperature: 1, Output limit: 262,144 tokens
Test setup not documented as identicalNo direct winnerVersion: 1Metric: accuracyScoring: Higher is betterGPT-5.5: Reasoning: xhigh, Output limit: 128,000 tokens Kimi K3: Temperature: 1, Output limit: 262,144 tokens
LMArena Text, Style ControlBusiness, management and financeTest details
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, Harness: Arena text, style control Kimi K3: Snapshot: kimi-k3-max, Reasoning: max, Harness: Arena text, style controlGPT-5.5: Style-controlled Arena rating from 12,904 anonymous pairwise votes.Kimi K3: Style-controlled Arena rating from 3,520 anonymous pairwise votes.
1,485.915
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.
Higher measured value1,489.216
95% confidence interval: ±10.41The 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 Kimi K3: Temperature: 1, Output limit: 262,144 tokens
Test setup not documented as identicalNo direct winnerVersion: 1Metric: accuracyScoring: Higher is betterGPT-5.5: Reasoning: xhigh, Output limit: 128,000 tokens Kimi K3: Temperature: 1, Output limit: 262,144 tokens
Test setup not documented as identicalNo direct winnerVersion: 1Metric: accuracyScoring: Higher is betterGPT-5.5: Reasoning: xhigh, Output limit: 128,000 tokens Kimi K3: Temperature: 1, Output limit: 262,144 tokens
Test setup not documented as identicalNo direct winnerVersion: 1Metric: accuracyScoring: Higher is betterGPT-5.5: Reasoning: xhigh, Temperature: 1 Kimi K3: Temperature: 1, Output limit: 30,000 tokens
Test setup not documented as identicalNo direct winnerVersion: 1Metric: accuracyScoring: Higher is betterGPT-5.5: Reasoning: xhigh, Output limit: 128,000 tokens Kimi K3: Temperature: 1, Output limit: 262,144 tokens
Test setup not documented as identicalNo direct winnerVersion: 2Metric: accuracyScoring: Higher is betterGPT-5.5: Reasoning: xhigh, Output limit: 128,000 tokens Kimi K3: Temperature: 1, Output limit: 262,144 tokens
Test setup not documented as identicalNo direct winnerVersion: 2.1Metric: accuracyScoring: Higher is betterGPT-5.5: Reasoning: high, Output limit: 128,000 tokens Kimi K3: Temperature: 1, Output limit: 262,144 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.
Kimi K3
API access was unavailable for this run. The model was not evaluated.
First attempt
Run date
7 Sept 2026
API provider
openrouter
Requested API model
moonshotai/kimi-k3
Pinned endpoint
Moonshot AI | moonshotai/kimi-k3-20260715
Reasoning setting
high
Temperature
Provider default
Token limit including reasoning
8,192 tokens
Test protocol
community-visual-tests-v1
Technical checks
Not run
Not yet visually reviewed. A successful recording does not confirm correct physics or full compliance with the prompt.
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
Related LLM comparisons
Compare GPT-5.5 and Kimi K3 with other leading models using the same data and benchmark logic.