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Mistral Small vs gpt-oss-120b

Mistral Mistral Small vs OpenAI gpt-oss-120b — side-by-side specs.

Mistral
Mistral Small
OpenAI
gpt-oss-120b
Overview
CompanyMistralOpenAI
Release dateFeb 26 2024Aug 5 2025
Model type
Open sourceNoYes
Specifications
Parameters
Context window
Benchmarks
Timeline
Release gapMistral Small shipped 526 days before gpt-oss-120b

Which is better: Mistral Small or gpt-oss-120b?

Mistral Small and gpt-oss-120b don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Mistral Small shipped 526 days before gpt-oss-120b, so benchmark comparisons should account for the intervening progress.

gpt-oss-120b is an open-source / open-weight model; Mistral Small is proprietary.

Direct benchmark comparisons are unavailable — Mistral Small and gpt-oss-120b don't publish scores on any of the same benchmarks.

Frequently asked questions

When was Mistral Small released?
Mistral Small was released by Mistral on Feb 26 2024.
When was gpt-oss-120b released?
gpt-oss-120b was released by OpenAI on Aug 5 2025.
Is Mistral Small or gpt-oss-120b open source?
gpt-oss-120b is an open-source / open-weight model released by OpenAI. Mistral Small is a proprietary model released by Mistral.

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