Mistral Small 3.1 and Kimi Chat don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Kimi Chat shipped 533 days before Mistral Small 3.1, so benchmark comparisons should account for the intervening progress.

Mistral Small 3.1 is open weight, while Kimi Chat is proprietary.

Direct benchmark comparisons are unavailable — Mistral Small 3.1 and Kimi Chat don't publish scores on any of the same benchmarks.