DeepSeek V3 Chat and Mistral Medium don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Mistral Medium shipped 366 days before DeepSeek V3 Chat, so benchmark comparisons should account for the intervening progress.

DeepSeek V3 Chat is open weight, while Mistral Medium is proprietary.

Direct benchmark comparisons are unavailable — DeepSeek V3 Chat and Mistral Medium don't publish scores on any of the same benchmarks.