Mistral Small 3.1 vs GPT-5-Codex-Mini
Mistral Mistral Small 3.1 | OpenAI GPT-5-Codex-Mini | |
|---|---|---|
| Overview | ||
| Company | Mistral | OpenAI |
| Release date | Mar 17 2025 | Nov 8 2025 |
| Access | Open Weight | Proprietary |
| Timeline | ||
| Release gap | Mistral Small 3.1 shipped 236 days before GPT-5-Codex-Mini | |
Which is better: Mistral Small 3.1 or GPT-5-Codex-Mini?
Mistral Small 3.1 and GPT-5-Codex-Mini don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Mistral Small 3.1 shipped 236 days before GPT-5-Codex-Mini, so benchmark comparisons should account for the intervening progress.
Mistral Small 3.1 is open weight, while GPT-5-Codex-Mini is proprietary.
Direct benchmark comparisons are unavailable — Mistral Small 3.1 and GPT-5-Codex-Mini don't publish scores on any of the same benchmarks.
Frequently asked questions
Mistral Small 3.1 was released by Mistral on Mar 17 2025.
GPT-5-Codex-Mini was released by OpenAI on Nov 8 2025.
Mistral Small 3.1 is an open weight model released by Mistral. GPT-5-Codex-Mini is a proprietary model released by OpenAI.
Other comparisons
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