Codestral 25.01 vs GPT-5.4 nano
Mistral Codestral 25.01 | OpenAI GPT-5.4 nano | |
|---|---|---|
| Overview | ||
| Company | Mistral | OpenAI |
| Release date | Jan 13 2025 | Mar 17 2026 |
| Access | Proprietary | Proprietary |
| Specifications | ||
Context window | 256k | — |
| Benchmarks | ||
Nonsense detection BullshitBench v2Given a confidently-worded but nonsensical prompt, does the AI spot that it makes no sense and push back — instead of playing along and inventing an answer? The score is how often it clearly called out the nonsense. Higher is better. | — | 14% |
| Timeline | ||
| Release gap | Codestral 25.01 shipped 428 days before GPT-5.4 nano | |
Which is better: Codestral 25.01 or GPT-5.4 nano?
Codestral 25.01 and GPT-5.4 nano don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Codestral 25.01 shipped 428 days before GPT-5.4 nano, so benchmark comparisons should account for the intervening progress.
Published specifications for these two models are limited — see each model page for the latest details.
Direct benchmark comparisons are unavailable — Codestral 25.01 and GPT-5.4 nano don't publish scores on any of the same benchmarks.
Frequently asked questions
Codestral 25.01 was released by Mistral on Jan 13 2025.
GPT-5.4 nano was released by OpenAI on Mar 17 2026.
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