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Codestral vs Gemini 3.1 Pro
Codestral (Mistral AI) and Gemini 3.1 Pro (Google DeepMind) compared on benchmarks, pricing, context window, and use-case rankings.
Scores
Intelligence (ECI)—155
Coding—68
Math—77
Reasoning & Knowledge—96
Agentic & Tools—88
Specifications
DeveloperMistral AIGoogle DeepMind
Family—Gemini
ReleasedJul 30, 2025Feb 19, 2026
Parameters——
AvailabilityOpen weights (non-commercial)API access
Context window——
Price — $/M input——
Price — $/M output——
Inputs——
Outputs——
Benchmarks
AIME 2024/2025—96%
APEX—34%
ARC-AGI—98%
ARC-AGI-2—77%
FrontierMath—37%
FrontierMath Tier 4—17%
GPQA Diamond—94%
GSO (code optimization)—23%
Humanity's Last Exam—46%
METR task horizon—6.4 h
SimpleBench—80%
SimpleQA Verified—77%
SWE-bench Verified—76%
Terminal-Bench—80%
WebDev Arena—1461
WeirdML—72%
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.