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Gemini 3.1 Flash vs Mistral Small 3

Google Gemini 3.1 Flash vs Mistral Mistral Small 3 — side-by-side specs.

Google
Gemini 3.1 Flash
Mistral
Mistral Small 3
Overview
CompanyGoogleMistral
Release dateFeb 26 2026Jan 2025
Model type
Open sourceNoYes
Specifications
Parameters
Context window
Benchmarks
Science reasoning
GPQA Diamond
Software engineering
SWE-Bench Verified
Multimodal understanding
MMMU
Timeline
Release gapMistral Small 3 shipped 421 days before Gemini 3.1 Flash

Which is better: Gemini 3.1 Flash or Mistral Small 3?

Gemini 3.1 Flash and Mistral Small 3 do not have directly comparable benchmark scores published on GPQA Diamond, SWE-Bench Verified, or MMMU. Mistral Small 3 shipped 421 days before Gemini 3.1 Flash, so benchmark comparisons should account for the intervening progress.

Mistral Small 3 is an open-source / open-weight model; Gemini 3.1 Flash is proprietary.

Direct benchmark comparisons are unavailable — at least one of these models has not published scores on GPQA Diamond, SWE-Bench Verified, or MMMU.

Frequently asked questions

When was Gemini 3.1 Flash released?
Gemini 3.1 Flash was released by Google on Feb 26 2026.
When was Mistral Small 3 released?
Mistral Small 3 was released by Mistral on Jan 2025.
Is Gemini 3.1 Flash or Mistral Small 3 open source?
Mistral Small 3 is an open-source / open-weight model released by Mistral. Gemini 3.1 Flash is a proprietary model released by Google.

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