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Mathstral 7B vs o3

Mistral Mathstral 7B vs OpenAI o3 — side-by-side specs.

Mistral
Mathstral 7B
OpenAI
o3
Overview
CompanyMistralOpenAI
Release dateJul 16 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 gapMathstral 7B shipped 274 days before o3

Which is better: Mathstral 7B or o3?

Mathstral 7B and o3 do not have directly comparable benchmark scores published on GPQA Diamond, SWE-Bench Verified, or MMMU. Mathstral 7B shipped 274 days before o3, so benchmark comparisons should account for the intervening progress.

Mathstral 7B 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 Mathstral 7B released?
Mathstral 7B was released by Mistral on Jul 16 2024.
When was o3 released?
o3 was released by OpenAI on Apr 16 2025.
Is Mathstral 7B or o3 open source?
Mathstral 7B is an open-source / open-weight model released by Mistral. o3 is a proprietary model released by OpenAI.

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