Mistral Medium 3.5vsKimi-Dev
Mistral Medium 3.5 | Kimi-Dev | |
|---|---|---|
| Specifications | ||
Parameters | 128B | 72B |
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% | — |
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 | Mistral | Moonshot AI |
| Release date | Apr 29 2026 | Jun 17 2025 |
| Access | Open Weight | Open Weight |
Which is better: Mistral Medium 3.5 or Kimi-Dev?
Mistral Medium 3.5 and Kimi-Dev don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Kimi-Dev shipped 316 days before Mistral Medium 3.5, so benchmark comparisons should account for the intervening progress.
Mistral Medium 3.5 has 128B parameters, while Kimi-Dev has 72B.
Direct benchmark comparisons are unavailable — Mistral Medium 3.5 and Kimi-Dev 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.
Kimi-Dev was released by Moonshot AI on Jun 17 2025.
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