DeepSeek Chat (R1-based) and o1-mini don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. o1-mini shipped 130 days before DeepSeek Chat (R1-based), so benchmark comparisons should account for the intervening progress.

DeepSeek Chat (R1-based) is open weight, while o1-mini is proprietary.

Direct benchmark comparisons are unavailable — DeepSeek Chat (R1-based) and o1-mini don't publish scores on any of the same benchmarks.