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Mistral Medium 3.5 vs Kimi K1.5

Mistral Mistral Medium 3.5 vs Moonshot AI Kimi K1.5 — side-by-side specs.

Mistral
Mistral Medium 3.5
Moonshot AI
Kimi K1.5
Overview
CompanyMistralMoonshot AI
Release dateApr 30 2026Jan 20 2025
Model type
Open sourceNoNo
Specifications
Parameters
Context window
128k
Benchmarks
Science reasoning
GPQA Diamond
Software engineering
SWE-Bench Verified
Multimodal understanding
MMMU
Timeline
Release gapKimi K1.5 shipped 465 days before Mistral Medium 3.5

Which is better: Mistral Medium 3.5 or Kimi K1.5?

Mistral Medium 3.5 and Kimi K1.5 do not have directly comparable benchmark scores published on GPQA Diamond, SWE-Bench Verified, or MMMU. Kimi K1.5 shipped 465 days before Mistral Medium 3.5, 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 Medium 3.5 released?
Mistral Medium 3.5 was released by Mistral on Apr 30 2026.
When was Kimi K1.5 released?
Kimi K1.5 was released by Moonshot AI on Jan 20 2025.

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