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Ministral 3B vs o3

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

Mistral
Ministral 3B
OpenAI
o3
Overview
CompanyMistralOpenAI
Release dateOct 2024Apr 16 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 197 days before o3

Which is better: Ministral 3B or o3?

Ministral 3B and o3 do not have directly comparable benchmark scores published on GPQA Diamond, SWE-Bench Verified, or MMMU. Ministral 3B shipped 197 days before o3, so benchmark comparisons should account for the intervening progress.

Ministral 3B is an open-source / open-weight model; o3 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 released?
o3 was released by OpenAI on Apr 16 2025.
Is Ministral 3B or o3 open source?
Ministral 3B is an open-source / open-weight model released by Mistral. o3 is a proprietary model released by OpenAI.

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