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Gemini 2.5 Flash vs Mistral Small 3.1

Google Gemini 2.5 Flash vs Mistral Mistral Small 3.1 — side-by-side specs.

Google
Gemini 2.5 Flash
Mistral
Mistral Small 3.1
Overview
CompanyGoogleMistral
Release dateApr 17 2025Mar 17 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 3.1 shipped 31 days before Gemini 2.5 Flash

Which is better: Gemini 2.5 Flash or Mistral Small 3.1?

Gemini 2.5 Flash and Mistral Small 3.1 do not have directly comparable benchmark scores published on GPQA Diamond, SWE-Bench Verified, or MMMU. Mistral Small 3.1 shipped 31 days before Gemini 2.5 Flash, so benchmark comparisons should account for the intervening progress.

Mistral Small 3.1 is an open-source / open-weight model; Gemini 2.5 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 2.5 Flash released?
Gemini 2.5 Flash was released by Google on Apr 17 2025.
When was Mistral Small 3.1 released?
Mistral Small 3.1 was released by Mistral on Mar 17 2025.
Is Gemini 2.5 Flash or Mistral Small 3.1 open source?
Mistral Small 3.1 is an open-source / open-weight model released by Mistral. Gemini 2.5 Flash is a proprietary model released by Google.

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