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Claude Sonnet 4.5 vs Mistral Medium

Anthropic Claude Sonnet 4.5 vs Mistral Mistral Medium — side-by-side specs.

Anthropic
Claude Sonnet 4.5
Mistral
Mistral Medium
Overview
CompanyAnthropicMistral
Release dateSep 29 2025Dec 2023
Model type
Open sourceNoNo
Specifications
Parameters
Context window
Benchmarks
Coding
SWE-Bench Verified
77.2%
Science
GPQA Diamond
83.4%
Multimodal
MMMU
68%
Timeline
Release gapMistral Medium shipped 668 days before Claude Sonnet 4.5

Which is better: Claude Sonnet 4.5 or Mistral Medium?

Claude Sonnet 4.5 and Mistral Medium don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Mistral Medium shipped 668 days before Claude Sonnet 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 — Claude Sonnet 4.5 and Mistral Medium don't publish scores on any of the same benchmarks.

Frequently asked questions

When was Claude Sonnet 4.5 released?
Claude Sonnet 4.5 was released by Anthropic on Sep 29 2025.
When was Mistral Medium released?
Mistral Medium was released by Mistral on Dec 2023.

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