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Mistral Small 3 vs o3-mini-high

Mistral Mistral Small 3 vs OpenAI o3-mini-high — side-by-side specs.

Mistral
Mistral Small 3
OpenAI
o3-mini-high
Overview
CompanyMistralOpenAI
Release dateJan 2025Jan 31 2025
Model type
Open sourceYesNo
Specifications
Parameters
Context window
Benchmarks
Science reasoning
GPQA Diamond
Software engineering
SWE-Bench Verified
Multimodal understanding
MMMU
Timeline
Release gapMistral Small 3 shipped 30 days before o3-mini-high

Which is better: Mistral Small 3 or o3-mini-high?

Mistral Small 3 and o3-mini-high do not have directly comparable benchmark scores published on GPQA Diamond, SWE-Bench Verified, or MMMU. Mistral Small 3 shipped 30 days before o3-mini-high, so benchmark comparisons should account for the intervening progress.

Mistral Small 3 is an open-source / open-weight model; o3-mini-high 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 released?
Mistral Small 3 was released by Mistral on Jan 2025.
When was o3-mini-high released?
o3-mini-high was released by OpenAI on Jan 31 2025.
Is Mistral Small 3 or o3-mini-high open source?
Mistral Small 3 is an open-source / open-weight model released by Mistral. o3-mini-high is a proprietary model released by OpenAI.

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