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Magistral Small vs Kimi K2.5

0 vs 2 benchmarks won

Mistral
Magistral Small
Moonshot AI
Kimi K2.5
Overview
CompanyMistralMoonshot AI
Release dateJun 10 2025Jan 27 2026
Model type
Open sourceNoYes
Specifications
Parameters
1T
Context window
256k
Benchmarks
Science reasoning
GPQA Diamond
87.6%
Software engineering
SWE-Bench Verified
76.8%
Multimodal understanding
MMMU
Timeline
Release gapMagistral Small shipped 231 days before Kimi K2.5

Which is better: Magistral Small or Kimi K2.5?

Kimi K2.5 leads Magistral Small on 2 of the tracked benchmarks (GPQA Diamond, SWE-Bench Verified, MMMU). Magistral Small shipped 231 days before Kimi K2.5, so benchmark comparisons should account for the intervening progress.

Kimi K2.5 is an open-source / open-weight model; Magistral 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 Magistral Small released?
Magistral Small was released by Mistral on Jun 10 2025.
When was Kimi K2.5 released?
Kimi K2.5 was released by Moonshot AI on Jan 27 2026.
Is Magistral Small or Kimi K2.5 open source?
Kimi K2.5 is an open-source / open-weight model released by Moonshot AI. Magistral Small is a proprietary model released by Mistral.

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