Claude Opus 4.5 vs Mistral Large 3
Anthropic Claude Opus 4.5 | Mistral Mistral Large 3 | |
|---|---|---|
| Overview | ||
| Company | Anthropic | Mistral |
| Release date | Nov 24 2025 | Dec 2 2025 |
| Access | Proprietary | Open Weight |
| 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. | 90% | — |
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. | 80.9% | — |
Science GPQA DiamondGraduate-level science questions in biology, physics, and chemistry — hard enough that subject-matter PhDs score around 65%. Higher is better. | 87% | — |
| Timeline | ||
| Release gap | Claude Opus 4.5 shipped 8 days before Mistral Large 3 | |
Which is better: Claude Opus 4.5 or Mistral Large 3?
Claude Opus 4.5 and Mistral Large 3 don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Claude Opus 4.5 shipped 8 days before Mistral Large 3, so benchmark comparisons should account for the intervening progress.
Claude Opus 4.5 is proprietary, while Mistral Large 3 is open weight.
Direct benchmark comparisons are unavailable — Claude Opus 4.5 and Mistral Large 3 don't publish scores on any of the same benchmarks.
Frequently asked questions
Claude Opus 4.5 was released by Anthropic on Nov 24 2025.
Mistral Large 3 was released by Mistral on Dec 2 2025.
Claude Opus 4.5 is a proprietary model released by Anthropic. Mistral Large 3 is an open weight model released by Mistral.
Other comparisons
Claude Opus 4.5 vs GPT-5.6 SolMistral Large 3 vs GPT-5.6 SolClaude Opus 4.5 vs Gemini OmniMistral Large 3 vs Gemini OmniClaude Opus 4.5 vs Muse Spark 1.1Mistral Large 3 vs Muse Spark 1.1Claude Opus 4.5 vs Grok 4.5Mistral Large 3 vs Grok 4.5Claude Opus 4.5 vs DeepSeek-V4-ProMistral Large 3 vs DeepSeek-V4-ProClaude Opus 4.5 vs Kimi K2.7 CodeMistral Large 3 vs Kimi K2.7 Code