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Mistral Small vs o3-pro

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

Mistral
Mistral Small
OpenAI
o3-pro
Overview
CompanyMistralOpenAI
Release dateFeb 26 2024Jun 10 2025
Model type
Open sourceNoNo
Specifications
Parameters
Context window
Benchmarks
Timeline
Release gapMistral Small shipped 470 days before o3-pro

Which is better: Mistral Small or o3-pro?

Mistral Small and o3-pro don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Mistral Small shipped 470 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 — Mistral Small and o3-pro 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-pro released?
o3-pro was released by OpenAI on Jun 10 2025.

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