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DeepSeek V3.1 Terminus vs Mistral Small 3.1

DeepSeek DeepSeek V3.1 Terminus vs Mistral Mistral Small 3.1 — side-by-side specs.

DeepSeek
DeepSeek V3.1 Terminus
Mistral
Mistral Small 3.1
Overview
CompanyDeepSeekMistral
Release dateSep 22 2025Mar 17 2025
Model type
Open sourceYesYes
Specifications
Parameters
Context window
Benchmarks
Science reasoning
GPQA Diamond
Software engineering
SWE-Bench Verified
Multimodal understanding
MMMU
Timeline
Release gapMistral Small 3.1 shipped 189 days before DeepSeek V3.1 Terminus

Which is better: DeepSeek V3.1 Terminus or Mistral Small 3.1?

DeepSeek V3.1 Terminus 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 189 days before DeepSeek V3.1 Terminus, so benchmark comparisons should account for the intervening progress.

Published specifications for these two models are limited — see each model page for the latest details.

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 Terminus released?
DeepSeek V3.1 Terminus was released by DeepSeek on Sep 22 2025.
When was Mistral Small 3.1 released?
Mistral Small 3.1 was released by Mistral on Mar 17 2025.

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