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Mistral Small 3.1 vs o1

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

Mistral
Mistral Small 3.1
OpenAI
o1
Overview
CompanyMistralOpenAI
Release dateMar 17 2025Dec 5 2024
Model type
Open sourceYesNo
Specifications
Parameters
Context window
Benchmarks
Science reasoning
GPQA Diamond
Software engineering
SWE-Bench Verified
Multimodal understanding
MMMU
Timeline
Release gapo1 shipped 102 days before Mistral Small 3.1

Which is better: Mistral Small 3.1 or o1?

Mistral Small 3.1 and o1 do not have directly comparable benchmark scores published on GPQA Diamond, SWE-Bench Verified, or MMMU. o1 shipped 102 days before Mistral Small 3.1, so benchmark comparisons should account for the intervening progress.

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

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 Mistral Small 3.1 released?
Mistral Small 3.1 was released by Mistral on Mar 17 2025.
When was o1 released?
o1 was released by OpenAI on Dec 5 2024.
Is Mistral Small 3.1 or o1 open source?
Mistral Small 3.1 is an open-source / open-weight model released by Mistral. o1 is a proprietary model released by OpenAI.

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