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Claude Opus 5 vs Gemini 3.1 Pro

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Claude Opus 5Gemini 3.1 Pro
AttributeClaude Opus 5Anthropic · 2 in the newsGemini 3.1 ProGoogle DeepMind · 3 in the news
Scores
Intelligence (ECI)159155
Coding9367
Math9373
Reasoning & Knowledge9294
Agentic & Tools9587
Specifications
DeveloperAnthropicGoogle DeepMind
FamilyClaudeGemini
ReleasedJul 24, 2026Feb 19, 2026
Parameters
AvailabilityAPI accessAPI access
Context window1M
Price — $/M input$5.00
Price — $/M output$25.00
Inputstext, image, file
Outputstext
Benchmarks
AIME 2024/202599%96%
APEX44%34%
ARC-AGI98%98%
ARC-AGI-288%77%
GPQA Diamond94%94%
Humanity's Last Exam53%46%
SciCode56%
SimpleQA Verified57%77%
FrontierMath37%
FrontierMath Tier 417%
GSO (code optimization)23%
METR task horizon6.4 h
SimpleBench80%
SWE-bench Verified76%
Terminal-Bench80%
WebDev Arena1461
WeirdML72%

Use-case scores are 0–100 percentile composites across each area’s benchmarks, ranked against every model from the past year. Highlighted cells lead each row. Open a model for the full picture.

Benchmarks & model data from Epoch AI (CC BY); pricing & specs from OpenRouter. ECI = Epoch Capabilities Index.

Claude Opus 5 vs Gemini 3.1 Pro — comparison