Devstral Small vs gpt-oss-120b
Mistral Devstral Small | OpenAI gpt-oss-120b | |
|---|---|---|
| Overview | ||
| Company | Mistral | OpenAI |
| Release date | May 21 2025 | Aug 5 2025 |
| Access | Open Weight | Open Weight |
| Specifications | ||
Parameters | 24B | — |
| 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 | Devstral Small shipped 76 days before gpt-oss-120b | |
Which is better: Devstral Small or gpt-oss-120b?
Devstral Small and gpt-oss-120b don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Devstral Small shipped 76 days before gpt-oss-120b, 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 and gpt-oss-120b don't publish scores on any of the same benchmarks.
Frequently asked questions
Devstral Small was released by Mistral on May 21 2025.
gpt-oss-120b was released by OpenAI on Aug 5 2025.
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