Claude 3.5 HaikuvsMistral Medium 3.5
Claude 3.5 Haiku | Mistral Medium 3.5 | |
|---|---|---|
| Specifications | ||
Parameters | — | 128B |
Context window | — | 256k |
| 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. | 50% | — |
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. | 40.6% | 77.6%Best |
Science GPQA DiamondGraduate-level science questions in biology, physics, and chemistry — hard enough that subject-matter PhDs score around 65%. Higher is better. | 41.6% | — |
Community preference (code) Arena Elo (Code)Like the text arena, but people vote on which AI writes better code. The votes become a chess-style Elo rating on arena.ai. Higher is better. | — | 1267 |
| Overview | ||
| Company | Anthropic | Mistral |
| Release date | Oct 22 2024 | Apr 29 2026 |
| Access | Proprietary | Open Weight |
Which is better: Claude 3.5 Haiku or Mistral Medium 3.5?
Mistral Medium 3.5 leads Claude 3.5 Haiku on 1 of the 1 benchmark they both report (SWE-Bench Verified). Claude 3.5 Haiku shipped 554 days before Mistral Medium 3.5, so benchmark comparisons should account for the intervening progress.
Claude 3.5 Haiku is proprietary, while Mistral Medium 3.5 is open weight.
On SWE-Bench Verified, Mistral Medium 3.5 leads at 77.6% vs Claude 3.5 Haiku at 40.6%.
Frequently asked questions
Claude 3.5 Haiku was released by Anthropic on Oct 22 2024.
Mistral Medium 3.5 was released by Mistral on Apr 29 2026.
Mistral Medium 3.5 leads on SWE-Bench Verified — Claude 3.5 Haiku 40.6% vs Mistral Medium 3.5 77.6%.
Claude 3.5 Haiku is a proprietary model released by Anthropic. Mistral Medium 3.5 is an open weight model released by Mistral.
Other comparisons
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