Mistral NeMo vs o3
Mistral Mistral NeMo | OpenAI o3 | |
|---|---|---|
| Overview | ||
| Company | Mistral | OpenAI |
| Release date | Jul 18 2024 | Apr 16 2025 |
| Access | Open Weight | Proprietary |
| Specifications | ||
Parameters | 12B | — |
Context window | 128k | — |
| 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 NeMo shipped 272 days before o3 | |
Which is better: Mistral NeMo or o3?
Mistral NeMo and o3 don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Mistral NeMo shipped 272 days before o3, so benchmark comparisons should account for the intervening progress.
Mistral NeMo is open weight, while o3 is proprietary.
Direct benchmark comparisons are unavailable — Mistral NeMo and o3 don't publish scores on any of the same benchmarks.
Frequently asked questions
Mistral NeMo was released by Mistral on Jul 18 2024.
o3 was released by OpenAI on Apr 16 2025.
Mistral NeMo is an open weight model released by Mistral. o3 is a proprietary model released by OpenAI.