DeepSeek V3 Base 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 80 days before DeepSeek V3 Base, so benchmark comparisons should account for the intervening progress.

DeepSeek V3 Base is open weight, while o1-mini is proprietary.

Direct benchmark comparisons are unavailable — DeepSeek V3 Base and o1-mini don't publish scores on any of the same benchmarks.