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Codestral 22B vs o3

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

Mistral
Codestral 22B
OpenAI
o3
Overview
CompanyMistralOpenAI
Release dateMay 29 2024Apr 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 gapCodestral 22B shipped 322 days before o3

Which is better: Codestral 22B or o3?

Codestral 22B and o3 do not have directly comparable benchmark scores published on GPQA Diamond, SWE-Bench Verified, or MMMU. Codestral 22B shipped 322 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 Codestral 22B released?
Codestral 22B was released by Mistral on May 29 2024.
When was o3 released?
o3 was released by OpenAI on Apr 16 2025.

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