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Ministral 3B vs o3-pro

Mistral Ministral 3B vs OpenAI o3-pro — side-by-side specs.

Mistral
Ministral 3B
OpenAI
o3-pro
Overview
CompanyMistralOpenAI
Release dateOct 2024Jun 10 2025
Model type
Open sourceYesNo
Specifications
Parameters
Context window
Benchmarks
Science reasoning
GPQA Diamond
Software engineering
SWE-Bench Verified
Multimodal understanding
MMMU
Timeline
Release gapMinistral 3B shipped 252 days before o3-pro

Which is better: Ministral 3B or o3-pro?

Ministral 3B and o3-pro do not have directly comparable benchmark scores published on GPQA Diamond, SWE-Bench Verified, or MMMU. Ministral 3B shipped 252 days before o3-pro, so benchmark comparisons should account for the intervening progress.

Ministral 3B is an open-source / open-weight model; o3-pro 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 Ministral 3B released?
Ministral 3B was released by Mistral on Oct 2024.
When was o3-pro released?
o3-pro was released by OpenAI on Jun 10 2025.
Is Ministral 3B or o3-pro open source?
Ministral 3B is an open-source / open-weight model released by Mistral. o3-pro is a proprietary model released by OpenAI.

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