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Mistral Small 3.1 vs Kimi K2 Thinking

0 vs 1 benchmarks won

Mistral
Mistral Small 3.1
Moonshot AI
Kimi K2 Thinking
Overview
CompanyMistralMoonshot AI
Release dateMar 17 2025Nov 6 2025
Model type
Open sourceYesYes
Specifications
Parameters
1T
Context window
256k
Benchmarks
Science reasoning
GPQA Diamond
Software engineering
SWE-Bench Verified
71.3%
Multimodal understanding
MMMU
Timeline
Release gapMistral Small 3.1 shipped 234 days before Kimi K2 Thinking

Which is better: Mistral Small 3.1 or Kimi K2 Thinking?

Kimi K2 Thinking leads Mistral Small 3.1 on 1 of the tracked benchmarks (GPQA Diamond, SWE-Bench Verified, MMMU). Mistral Small 3.1 shipped 234 days before Kimi K2 Thinking, 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 Mistral Small 3.1 released?
Mistral Small 3.1 was released by Mistral on Mar 17 2025.
When was Kimi K2 Thinking released?
Kimi K2 Thinking was released by Moonshot AI on Nov 6 2025.

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