Mistral Small 3.1 vs GPT-5.1-Codex-Max
Mistral Mistral Small 3.1 | OpenAI GPT-5.1-Codex-Max | |
|---|---|---|
| Overview | ||
| Company | Mistral | OpenAI |
| Release date | Mar 17 2025 | Nov 19 2025 |
| Access | Open Weight | Proprietary |
| Timeline | ||
| Release gap | Mistral Small 3.1 shipped 247 days before GPT-5.1-Codex-Max | |
Which is better: Mistral Small 3.1 or GPT-5.1-Codex-Max?
Mistral Small 3.1 and GPT-5.1-Codex-Max don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Mistral Small 3.1 shipped 247 days before GPT-5.1-Codex-Max, so benchmark comparisons should account for the intervening progress.
Mistral Small 3.1 is open weight, while GPT-5.1-Codex-Max is proprietary.
Direct benchmark comparisons are unavailable — Mistral Small 3.1 and GPT-5.1-Codex-Max 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-5.1-Codex-Max was released by OpenAI on Nov 19 2025.
Mistral Small 3.1 is an open weight model released by Mistral. GPT-5.1-Codex-Max is a proprietary model released by OpenAI.
Other comparisons
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