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DeepSeek V3.1 vs Mistral Small

DeepSeek DeepSeek V3.1 vs Mistral Mistral Small — side-by-side specs.

DeepSeek
DeepSeek V3.1
Mistral
Mistral Small
Overview
CompanyDeepSeekMistral
Release dateAug 21 2025Feb 26 2024
Model type
Open sourceYesNo
Specifications
Parameters
Context window
Benchmarks
Science reasoning
GPQA Diamond
Software engineering
SWE-Bench Verified
Multimodal understanding
MMMU
Timeline
Release gapMistral Small shipped 542 days before DeepSeek V3.1

Which is better: DeepSeek V3.1 or Mistral Small?

DeepSeek V3.1 and Mistral Small do not have directly comparable benchmark scores published on GPQA Diamond, SWE-Bench Verified, or MMMU. Mistral Small shipped 542 days before DeepSeek V3.1, so benchmark comparisons should account for the intervening progress.

DeepSeek V3.1 is an open-source / open-weight model; Mistral Small 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 DeepSeek V3.1 released?
DeepSeek V3.1 was released by DeepSeek on Aug 21 2025.
When was Mistral Small released?
Mistral Small was released by Mistral on Feb 26 2024.
Is DeepSeek V3.1 or Mistral Small open source?
DeepSeek V3.1 is an open-source / open-weight model released by DeepSeek. Mistral Small is a proprietary model released by Mistral.

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