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Mistral Small vs o3

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

Mistral
Mistral Small
OpenAI
o3
Overview
CompanyMistralOpenAI
Release dateFeb 26 2024Apr 16 2025
Model type
Open sourceNoNo
Specifications
Parameters
Context window
Benchmarks
Timeline
Release gapMistral Small shipped 415 days before o3

Which is better: Mistral Small or o3?

Mistral Small and o3 don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Mistral Small shipped 415 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 — Mistral Small and o3 don't publish scores on any of the same benchmarks.

Frequently asked questions

When was Mistral Small released?
Mistral Small was released by Mistral on Feb 26 2024.
When was o3 released?
o3 was released by OpenAI on Apr 16 2025.

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