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Mistral Small 3.1 vs o1-pro

Mistral Mistral Small 3.1 vs OpenAI o1-pro — side-by-side specs.

Mistral
Mistral Small 3.1
OpenAI
o1-pro
Overview
CompanyMistralOpenAI
Release dateMar 17 2025Mar 19 2025
Model type
Open sourceYesNo
Specifications
Parameters
Context window
Benchmarks
Timeline
Release gapMistral Small 3.1 shipped 2 days before o1-pro

Which is better: Mistral Small 3.1 or o1-pro?

Mistral Small 3.1 and o1-pro don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Mistral Small 3.1 shipped 2 days before o1-pro, so benchmark comparisons should account for the intervening progress.

Mistral Small 3.1 is an open-source / open-weight model; o1-pro is proprietary.

Direct benchmark comparisons are unavailable — Mistral Small 3.1 and o1-pro don't publish scores on any of the same benchmarks.

Frequently asked questions

When was Mistral Small 3.1 released?
Mistral Small 3.1 was released by Mistral on Mar 17 2025.
When was o1-pro released?
o1-pro was released by OpenAI on Mar 19 2025.
Is Mistral Small 3.1 or o1-pro open source?
Mistral Small 3.1 is an open-source / open-weight model released by Mistral. o1-pro is a proprietary model released by OpenAI.

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