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Claude Fable 5 vs Gemini 3.1 Pro
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Scores
Intelligence (ECI)161155
Coding10068
Math9777
Reasoning & Knowledge9796
Agentic & Tools9788
Specifications
DeveloperAnthropicGoogle DeepMind
FamilyClaudeGemini
ReleasedJun 9, 2026Feb 19, 2026
Parameters——
AvailabilityAPI accessAPI access
Context window1M—
Price — $/M input$10.00—
Price — $/M output$50.00—
Inputstext, image, file—
Outputstext—
Benchmarks
AIME 2024/2025100%96%
APEX45%34%
GPQA Diamond93%94%
Humanity's Last Exam53%46%
SciCode60%—
SimpleBench82%80%
SimpleQA Verified68%77%
WebDev Arena16541461
WeirdML88%72%
τ²-bench99%—
ARC-AGI—98%
ARC-AGI-2—77%
FrontierMath—37%
FrontierMath Tier 4—17%
GSO (code optimization)—23%
METR task horizon—6.4 h
SWE-bench Verified—76%
Terminal-Bench—80%
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.
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Benchmarks & model data from Epoch AI (CC BY); pricing & specs from OpenRouter. ECI = Epoch Capabilities Index.