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Codestral 22B vs o3-pro

Mistral Codestral 22B vs OpenAI o3-pro — side-by-side specs.

Mistral
Codestral 22B
OpenAI
o3-pro
Overview
CompanyMistralOpenAI
Release dateMay 29 2024Jun 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 gapCodestral 22B shipped 377 days before o3-pro

Which is better: Codestral 22B or o3-pro?

Codestral 22B and o3-pro do not have directly comparable benchmark scores published on GPQA Diamond, SWE-Bench Verified, or MMMU. Codestral 22B shipped 377 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 Codestral 22B released?
Codestral 22B was released by Mistral on May 29 2024.
When was o3-pro released?
o3-pro was released by OpenAI on Jun 10 2025.

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