DeepSeek Chat (R1-based) and Mistral Small don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Mistral Small shipped 329 days before DeepSeek Chat (R1-based), so benchmark comparisons should account for the intervening progress.

DeepSeek Chat (R1-based) is open weight, while Mistral Small is proprietary.

Direct benchmark comparisons are unavailable — DeepSeek Chat (R1-based) and Mistral Small don't publish scores on any of the same benchmarks.