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Mistral Medium vs o3-pro

Mistral Mistral Medium vs OpenAI o3-pro — side-by-side specs.

Mistral
Mistral Medium
OpenAI
o3-pro
Overview
CompanyMistralOpenAI
Release dateDec 2023Jun 10 2025
Model type
Open sourceNoNo
Specifications
Parameters
Context window
Benchmarks
Science reasoning
GPQA Diamond
Software engineering
SWE-Bench Verified
Multimodal understanding
MMMU
Timeline
Release gapMistral Medium shipped 557 days before o3-pro

Which is better: Mistral Medium or o3-pro?

Mistral Medium and o3-pro do not have directly comparable benchmark scores published on GPQA Diamond, SWE-Bench Verified, or MMMU. Mistral Medium shipped 557 days before o3-pro, 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 released?
Mistral Medium was released by Mistral on Dec 2023.
When was o3-pro released?
o3-pro was released by OpenAI on Jun 10 2025.

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