Claude Haiku 4.5 vs Mistral Small 3.2
Anthropic Claude Haiku 4.5 | Mistral Mistral Small 3.2 | |
|---|---|---|
| Overview | ||
| Company | Anthropic | Mistral |
| Release date | Oct 15 2025 | Jun 20 2025 |
| Access | Proprietary | Open Weight |
| Specifications | ||
Parameters | — | 24B |
| 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. | 77% | — |
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. | 73.3% | — |
Science GPQA DiamondGraduate-level science questions in biology, physics, and chemistry — hard enough that subject-matter PhDs score around 65%. Higher is better. | 73% | — |
| Timeline | ||
| Release gap | Mistral Small 3.2 shipped 117 days before Claude Haiku 4.5 | |
Which is better: Claude Haiku 4.5 or Mistral Small 3.2?
Claude Haiku 4.5 and Mistral Small 3.2 don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Mistral Small 3.2 shipped 117 days before Claude Haiku 4.5, so benchmark comparisons should account for the intervening progress.
Claude Haiku 4.5 is proprietary, while Mistral Small 3.2 is open weight.
Direct benchmark comparisons are unavailable — Claude Haiku 4.5 and Mistral Small 3.2 don't publish scores on any of the same benchmarks.
Frequently asked questions
Claude Haiku 4.5 was released by Anthropic on Oct 15 2025.
Mistral Small 3.2 was released by Mistral on Jun 20 2025.
Claude Haiku 4.5 is a proprietary model released by Anthropic. Mistral Small 3.2 is an open weight model released by Mistral.
Other comparisons
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