Mistral Small 4 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 288 days before Mistral Small 4, so benchmark comparisons should account for the intervening progress.

Mistral Small 4 is proprietary, while Kimi-Dev is open weight.

Direct benchmark comparisons are unavailable — Mistral Small 4 and Kimi-Dev don't publish scores on any of the same benchmarks.