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Claude Haiku 4.5 vs Mistral Medium 3.5

2 vs 0 benchmarks won

Anthropic
Claude Haiku 4.5
Mistral
Mistral Medium 3.5
Overview
CompanyAnthropicMistral
Release dateOct 15 2025Apr 30 2026
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 gapClaude Haiku 4.5 shipped 197 days before Mistral Medium 3.5

Which is better: Claude Haiku 4.5 or Mistral Medium 3.5?

Claude Haiku 4.5 leads Mistral Medium 3.5 on 2 of the tracked benchmarks (GPQA Diamond, SWE-Bench Verified, MMMU). Claude Haiku 4.5 shipped 197 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 Claude Haiku 4.5 released?
Claude Haiku 4.5 was released by Anthropic on Oct 15 2025.
When was Mistral Medium 3.5 released?
Mistral Medium 3.5 was released by Mistral on Apr 30 2026.

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