Mistral Small 3 vs o3
Mistral Mistral Small 3 | OpenAI o3 | |
|---|---|---|
| Overview | ||
| Company | Mistral | OpenAI |
| Release date | Jan 2025 | Apr 16 2025 |
| Access | Open Weight | Proprietary |
| 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. | — | 26% |
| Timeline | ||
| Release gap | Mistral Small 3 shipped 105 days before o3 | |
Which is better: Mistral Small 3 or o3?
Mistral Small 3 and o3 don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Mistral Small 3 shipped 105 days before o3, so benchmark comparisons should account for the intervening progress.
Mistral Small 3 is open weight, while o3 is proprietary.
Direct benchmark comparisons are unavailable — Mistral Small 3 and o3 don't publish scores on any of the same benchmarks.
Frequently asked questions
Mistral Small 3 was released by Mistral on Jan 2025.
o3 was released by OpenAI on Apr 16 2025.
Mistral Small 3 is an open weight model released by Mistral. o3 is a proprietary model released by OpenAI.
Other comparisons
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