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Mistral Medium vs o3

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

Mistral
Mistral Medium
OpenAI
o3
Overview
CompanyMistralOpenAI
Release dateDec 2023Apr 16 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 502 days before o3

Which is better: Mistral Medium or o3?

Mistral Medium and o3 do not have directly comparable benchmark scores published on GPQA Diamond, SWE-Bench Verified, or MMMU. Mistral Medium shipped 502 days before o3, 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 released?
o3 was released by OpenAI on Apr 16 2025.

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