Devstral Small 2 (24B) vs gpt-oss-120b
Mistral Devstral Small 2 (24B) | OpenAI gpt-oss-120b | |
|---|---|---|
| Overview | ||
| Company | Mistral | OpenAI |
| Release date | Dec 9 2025 | Aug 5 2025 |
| Access | Open Weight | Open Weight |
| 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. | — | 11% |
| Timeline | ||
| Release gap | gpt-oss-120b shipped 126 days before Devstral Small 2 (24B) | |
Which is better: Devstral Small 2 (24B) or gpt-oss-120b?
Devstral Small 2 (24B) and gpt-oss-120b don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. gpt-oss-120b shipped 126 days before Devstral Small 2 (24B), 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 — Devstral Small 2 (24B) and gpt-oss-120b don't publish scores on any of the same benchmarks.
Frequently asked questions
Devstral Small 2 (24B) was released by Mistral on Dec 9 2025.
gpt-oss-120b was released by OpenAI on Aug 5 2025.
Other comparisons
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