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Claude Haiku 4.5 vs Mistral Medium

2 vs 0 benchmarks won

Anthropic
Claude Haiku 4.5
Mistral
Mistral Medium
Overview
CompanyAnthropicMistral
Release dateOct 15 2025Dec 2023
Model type
Open sourceNoNo
Specifications
Parameters
Context window
Benchmarks
Science reasoning
GPQA Diamond
73%
Software engineering
SWE-Bench Verified
73.3%
Multimodal understanding
MMMU
Timeline
Release gapMistral Medium shipped 684 days before Claude Haiku 4.5

Which is better: Claude Haiku 4.5 or Mistral Medium?

Claude Haiku 4.5 leads Mistral Medium on 2 of the tracked benchmarks (GPQA Diamond, SWE-Bench Verified, MMMU). Mistral Medium shipped 684 days before Claude Haiku 4.5, 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 Claude Haiku 4.5 released?
Claude Haiku 4.5 was released by Anthropic on Oct 15 2025.
When was Mistral Medium released?
Mistral Medium was released by Mistral on Dec 2023.

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