Claude Opus 4.1 vs Mistral NeMo
Anthropic Claude Opus 4.1 | Mistral Mistral NeMo | |
|---|---|---|
| Overview | ||
| Company | Anthropic | Mistral |
| Release date | Aug 5 2025 | Jul 18 2024 |
| Access | Proprietary | Open Weight |
| 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. | 43% | — |
Coding SWE-Bench VerifiedReal coding tasks pulled from open-source projects — the AI has to find and fix actual bugs. A human-checked version of the original SWE-Bench. Higher is better. | 74.5% | — |
Science GPQA DiamondGraduate-level science questions in biology, physics, and chemistry — hard enough that subject-matter PhDs score around 65%. Higher is better. | 80.9% | — |
| Timeline | ||
| Release gap | Mistral NeMo shipped 383 days before Claude Opus 4.1 | |
Which is better: Claude Opus 4.1 or Mistral NeMo?
Claude Opus 4.1 and Mistral NeMo don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Mistral NeMo shipped 383 days before Claude Opus 4.1, so benchmark comparisons should account for the intervening progress.
Claude Opus 4.1 is proprietary, while Mistral NeMo is open weight.
Direct benchmark comparisons are unavailable — Claude Opus 4.1 and Mistral NeMo don't publish scores on any of the same benchmarks.
Frequently asked questions
Claude Opus 4.1 was released by Anthropic on Aug 5 2025.
Mistral NeMo was released by Mistral on Jul 18 2024.
Claude Opus 4.1 is a proprietary model released by Anthropic. Mistral NeMo is an open weight model released by Mistral.
Other comparisons
Claude Opus 4.1 vs GPT-5.6 SolMistral NeMo vs GPT-5.6 SolClaude Opus 4.1 vs Gemini OmniMistral NeMo vs Gemini OmniClaude Opus 4.1 vs Muse Spark 1.1Mistral NeMo vs Muse Spark 1.1Claude Opus 4.1 vs Grok 4.5Mistral NeMo vs Grok 4.5Claude Opus 4.1 vs DeepSeek-V4-ProMistral NeMo vs DeepSeek-V4-ProClaude Opus 4.1 vs Kimi K2.7 CodeMistral NeMo vs Kimi K2.7 Code