Mistral Medium 3.5 vs Mistral Small 4
Mistral Mistral Medium 3.5 | Mistral Mistral Small 4 | |
|---|---|---|
| Overview | ||
| Company | Mistral | Mistral |
| Release date | Apr 29 2026 | Mar 16 2026 |
| Access | Open Weight | Proprietary |
| Specifications | ||
Parameters | 128B | — |
Context window | 256k | — |
| Benchmarks | ||
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. | 77.6% | — |
| Timeline | ||
| Release gap | Mistral Small 4 shipped 44 days before Mistral Medium 3.5 | |
Which is better: Mistral Medium 3.5 or Mistral Small 4?
Mistral Medium 3.5 and Mistral Small 4 don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Mistral Small 4 shipped 44 days before Mistral Medium 3.5, so benchmark comparisons should account for the intervening progress.
Mistral Medium 3.5 is open weight, while Mistral Small 4 is proprietary.
Direct benchmark comparisons are unavailable — Mistral Medium 3.5 and Mistral Small 4 don't publish scores on any of the same benchmarks.
Frequently asked questions
Mistral Medium 3.5 was released by Mistral on Apr 29 2026.
Mistral Small 4 was released by Mistral on Mar 16 2026.
Mistral Medium 3.5 is an open weight model released by Mistral. Mistral Small 4 is a proprietary model released by Mistral.
Other comparisons
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