Compare published benchmark results from matching versions and cohorts, API pricing, and technical specifications. Any documented test setup differences remain visible.
shared result series
206
distinct benchmarks
31
latest retrieval
2026-09-29
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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.
Specifications for Claude Opus 5 and Gemini 3.5 Flash
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.
API pricing for Claude Opus 5 and Gemini 3.5 Flash
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.
Provider pricing for Claude Opus 5 and Gemini 3.5 Flash
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.
Claude Opus 5
Gemini 3.5 Flash
Coding: 100 / 55.5 (7 benchmark families)
Reasoning: 100 / 98.5 (2 benchmark families)
Mathematics: 100 / 64.4 (2 benchmark families)
Knowledge: 96.6 / 98.7 (3 benchmark families)
Finance: 100 / 91 (7 benchmark families)
Legal: 100 / 71.8 (4 benchmark families)
Agentic tasks: 100 / 87.4 (2 benchmark families)
Multimodal: 100 / 98.2 (1 benchmark family)
62 matched rows from 30 benchmark families were considered. The radar shows 8 of 14 comparable categories.
Claude Opus 5Gemini 3.5 Flash
Code MigrationOverall. Higher is better. No documented setup difference
Claude Opus 5Winner57.473 %
Gemini 3.5 Flash26.745 %
CorpFin v2Overall. Higher is better. No documented setup difference
Claude Opus 5Winner73.194 %
Gemini 3.5 Flash64.686 %
CyberBench v1.1Patch. Higher is better. No documented setup difference
Claude Opus 5Winner81.356 %
Gemini 3.5 Flash81.034 %
EMBOverall. Higher is better. No documented setup difference
Claude Opus 5Winner73.556 %
Gemini 3.5 Flash63.548 %
Finance Agent (v2)Overall. Higher is better. No documented setup difference
Claude Opus 5Winner58.633 %
Gemini 3.5 Flash57.861 %
GPQA DiamondOverall. Higher is better. No documented setup difference
Claude Opus 5Winner93.434 %
Gemini 3.5 Flash92.676 %
Harvey's Legal Agent BenchmarkOverall · Task fully resolved. Higher is better. No documented setup difference
Claude Opus 5Winner6.667 %
Gemini 3.5 Flash2.5 %
Legal Research BenchOverall · All-pass. Higher is better. No documented setup difference
Claude Opus 5Winner55.288 %
Gemini 3.5 Flash30.769 %
LegalBenchOverall. Higher is better. No documented setup difference
Claude Opus 5Winner86.974 %
Gemini 3.5 Flash83.602 %
LiveCodeBench v6Overall. Higher is better. No documented setup difference
Claude Opus 5Winner89.033 %
Gemini 3.5 Flash87.604 %
LMArena Text, Style ControlOverall. Higher is better. No documented setup difference
Claude Opus 5Winner1,491.077
Gemini 3.5 Flash1,476.958
MedCodeOverall. Higher is better. No documented setup difference
Claude Opus 5Winner63.57 %
Gemini 3.5 Flash55.825 %
Key to the marks:better valuebetter, but not conclusivetie
Benchmark scores for Claude Opus 5 and Gemini 3.5 Flash
Benchmark and task
Claude Opus 5
Gemini 3.5 Flash
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 betterClaude Opus 5: Snapshot: claude-opus-5-high, Reasoning: high, Harness: Arena text, style control Gemini 3.5 Flash: Snapshot: gemini-3.5-flash-high, Reasoning: high, Harness: Arena text, style controlClaude Opus 5: Style-controlled Arena rating from 55,063 anonymous pairwise votes.Gemini 3.5 Flash: Style-controlled Arena rating from 46,190 anonymous pairwise votes.
Winner1,491.077
95% confidence interval: ±3.89The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
1,476.958
95% confidence interval: ±3.954The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
No documented difference in the test setupVersion: Kaggle leaderboard 2026-08-03Metric: Kaggle leaderboard scoreScoring: Higher is better1,000 verified prompts without tools. Kaggle independently reproduced the results.
Test setup not documented as identicalNo direct winnerVersion: 1Metric: accuracyScoring: Higher is betterGemini 3.5 Flash: Reasoning: high, Temperature: 1, Output limit: 65,536 tokens
Test setup not documented as identicalNo direct winnerVersion: 2Metric: accuracyScoring: Higher is betterGemini 3.5 Flash: Reasoning: high, Temperature: 1, Output limit: 65,536 tokens
Test setup not documented as identicalNo direct winnerVersion: 1Metric: accuracyScoring: Higher is betterGemini 3.5 Flash: Reasoning: high, Temperature: 1, Output limit: 65,536 tokens
Test setup not documented as identicalNo direct winnerVersion: 1Metric: accuracyScoring: Higher is betterGemini 3.5 Flash: Reasoning: high, Temperature: 1, Output limit: 65,536 tokens
Test setup not documented as identicalNo direct winnerVersion: 1Metric: criteria pass rateScoring: Higher is betterGemini 3.5 Flash: Reasoning: high, Temperature: 1, Output limit: 65,536 tokens
Legal Research BenchAdministrative / Regulatory · All-passTest details
Test setup not documented as identicalNo direct winnerVersion: 1Metric: all-pass rateScoring: Higher is betterGemini 3.5 Flash: Reasoning: high, Temperature: 1, Output limit: 65,536 tokens
Test setup not documented as identicalNo direct winnerVersion: 1Metric: accuracyScoring: Higher is betterGemini 3.5 Flash: Reasoning: high, Temperature: 1, Output limit: 65,536 tokens
Test setup not documented as identicalNo direct winnerVersion: 1Metric: accuracyScoring: Higher is betterGemini 3.5 Flash: Reasoning: high, Temperature: 1, Output limit: 65,536 tokens
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 betterClaude Opus 5: Snapshot: claude-opus-5-high, Reasoning: high, Harness: Arena text, style control Gemini 3.5 Flash: Snapshot: gemini-3.5-flash-high, Reasoning: high, Harness: Arena text, style controlClaude Opus 5: Style-controlled Arena rating from 10,655 anonymous pairwise votes.Gemini 3.5 Flash: Style-controlled Arena rating from 9,088 anonymous pairwise votes.
Winner1,486.354
95% confidence interval: ±7.021The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
1,467.855
95% confidence interval: ±7.031The 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 betterGemini 3.5 Flash: Reasoning: high, Temperature: 1, Output limit: 65,536 tokens
Test setup not documented as identicalNo direct winnerVersion: 1Metric: accuracyScoring: Higher is betterGemini 3.5 Flash: Reasoning: high, Temperature: 1, Output limit: 65,536 tokens
Test setup not documented as identicalNo direct winnerVersion: 1Metric: accuracyScoring: Higher is betterGemini 3.5 Flash: Reasoning: high, Temperature: 1, Output limit: 65,536 tokens
Test setup not documented as identicalNo direct winnerVersion: 1Metric: accuracyScoring: Higher is betterGemini 3.5 Flash: Reasoning: high, Temperature: 1, Output limit: 65,536 tokens
Test setup not documented as identicalNo direct winnerVersion: 2Metric: accuracyScoring: Higher is betterGemini 3.5 Flash: Reasoning: high, Temperature: 1, Output limit: 65,536 tokens
Test setup not documented as identicalNo direct winnerVersion: 1.2Metric: benchmark scoreScoring: Higher is betterGemini 3.5 Flash: Reasoning: high, Temperature: 1, Output limit: 65,536 tokens
Test setup not documented as identicalNo direct winnerVersion: 1.2Metric: benchmark scoreScoring: Higher is betterGemini 3.5 Flash: Reasoning: high, Temperature: 1, Output limit: 65,536 tokens
Test setup not documented as identicalNo direct winnerVersion: 1Metric: accuracyScoring: Higher is betterGemini 3.5 Flash: Reasoning: high, Temperature: 1, Output limit: 65,536 tokens
Test setup not documented as identicalNo direct winnerVersion: 2Metric: accuracyScoring: Higher is betterGemini 3.5 Flash: Reasoning: high, Temperature: 1, Output limit: 65,536 tokens
Test setup not documented as identicalNo direct winnerVersion: 1Metric: accuracyScoring: Higher is betterGemini 3.5 Flash: Reasoning: high, Temperature: 1, Output limit: 65,536 tokens
Test setup not documented as identicalNo direct winnerVersion: 1Metric: accuracyScoring: Higher is betterGemini 3.5 Flash: Reasoning: high, Temperature: 1, Output limit: 65,536 tokens
Test setup not documented as identicalNo direct winnerVersion: 1Metric: task resolution rateScoring: Higher is betterGemini 3.5 Flash: Reasoning: high, Temperature: 1, Output limit: 65,536 tokens
Legal Research BenchAdministrative / Regulatory · Weighted partial creditTest details
Test setup not documented as identicalNo direct winnerVersion: 1Metric: weighted partial-credit scoreScoring: Higher is betterGemini 3.5 Flash: Reasoning: high, Temperature: 1, Output limit: 65,536 tokens
Test setup not documented as identicalNo direct winnerVersion: 1Metric: accuracyScoring: Higher is betterGemini 3.5 Flash: Reasoning: high, Temperature: 1, Output limit: 65,536 tokens
Test setup not documented as identicalNo direct winnerVersion: 1Metric: accuracyScoring: Higher is betterGemini 3.5 Flash: Reasoning: high, Temperature: 1, Output limit: 65,536 tokens
No documented difference in the test setupVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterClaude Opus 5: Snapshot: claude-opus-5-high, Reasoning: high, Harness: Arena text, style control Gemini 3.5 Flash: Snapshot: gemini-3.5-flash-high, Reasoning: high, Harness: Arena text, style controlClaude Opus 5: Style-controlled Arena rating from 4,449 anonymous pairwise votes.Gemini 3.5 Flash: Style-controlled Arena rating from 3,491 anonymous pairwise votes.
Winner1,550.221
95% confidence interval: ±10.016The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
1,514.086
95% confidence interval: ±10.738The 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 betterGemini 3.5 Flash: Reasoning: high, Temperature: 1, Output limit: 65,536 tokens
Test setup not documented as identicalNo direct winnerVersion: 1Metric: accuracyScoring: Higher is betterGemini 3.5 Flash: Reasoning: high, Temperature: 1, Output limit: 65,536 tokens
Key to the marks:better valuebetter, but not conclusivetie
Our model tests
Our tests
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.
Claude Opus 5
The API response was not fully received. The model was not evaluated.
Reasoning (requested): high
First attempt
Run date
7 Sept 2026
API provider
openrouter
Requested API model
anthropic/claude-opus-5
Reasoning setting
high
Pinned endpoint
Anthropic | anthropic/claude-opus-5-20260723
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.
Gemini 3.5 Flash
API access was unavailable for this run. The model was not evaluated.
Reasoning (requested): high
First attempt
Run date
7 Sept 2026
API provider
openrouter
Requested API model
google/gemini-3.5-flash
Reasoning setting
high
Pinned endpoint
Google AI Studio | google/gemini-3.5-flash-20260519
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 Claude Opus 5 and Gemini 3.5 Flash with other leading models using the same data and benchmark logic.