Mistral Small 3.1 vs o3
Mistral Mistral Small 3.1 | OpenAI o3 | |
|---|---|---|
| Overview | ||
| Company | Mistral | OpenAI |
| Release date | Mar 17 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 3.1 shipped 30 days before o3 | |
Which is better: Mistral Small 3.1 or o3?
Mistral Small 3.1 and o3 don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Mistral Small 3.1 shipped 30 days before o3, so benchmark comparisons should account for the intervening progress.
Mistral Small 3.1 is open weight, while o3 is proprietary.
Direct benchmark comparisons are unavailable — Mistral Small 3.1 and o3 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.
o3 was released by OpenAI on Apr 16 2025.
Mistral Small 3.1 is an open weight model released by Mistral. o3 is a proprietary model released by OpenAI.
Other comparisons
Mistral Small 3.1 vs Claude Sonnet 5o3 vs Claude Sonnet 5Mistral Small 3.1 vs Gemini Omnio3 vs Gemini OmniMistral Small 3.1 vs Muse Spark 1.1o3 vs Muse Spark 1.1Mistral Small 3.1 vs Grok 4.5o3 vs Grok 4.5Mistral Small 3.1 vs DeepSeek-V4-Proo3 vs DeepSeek-V4-ProMistral Small 3.1 vs Kimi K2.7 Codeo3 vs Kimi K2.7 Code