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Mistral Medium 3 vs Kimi-Dev

Mistral Mistral Medium 3 vs Moonshot AI Kimi-Dev — side-by-side specs.

Mistral
Mistral Medium 3
Moonshot AI
Kimi-Dev
Overview
CompanyMistralMoonshot AI
Release dateMay 7 2025Jun 2025
Model type
Open sourceNoYes
Specifications
Parameters
72B
Context window
Benchmarks
Science reasoning
GPQA Diamond
Software engineering
SWE-Bench Verified
Multimodal understanding
MMMU
Timeline
Release gapMistral Medium 3 shipped 25 days before Kimi-Dev

Which is better: Mistral Medium 3 or Kimi-Dev?

Mistral Medium 3 and Kimi-Dev do not have directly comparable benchmark scores published on GPQA Diamond, SWE-Bench Verified, or MMMU. Mistral Medium 3 shipped 25 days before Kimi-Dev, so benchmark comparisons should account for the intervening progress.

Kimi-Dev is an open-source / open-weight model; Mistral Medium 3 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 Mistral Medium 3 released?
Mistral Medium 3 was released by Mistral on May 7 2025.
When was Kimi-Dev released?
Kimi-Dev was released by Moonshot AI on Jun 2025.
Is Mistral Medium 3 or Kimi-Dev open source?
Kimi-Dev is an open-source / open-weight model released by Moonshot AI. Mistral Medium 3 is a proprietary model released by Mistral.

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