DeepSeek Coder V2 and o1-preview don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. DeepSeek Coder V2 shipped 103 days before o1-preview, so benchmark comparisons should account for the intervening progress.

DeepSeek Coder V2 is open weight, while o1-preview is proprietary.

Direct benchmark comparisons are unavailable — DeepSeek Coder V2 and o1-preview don't publish scores on any of the same benchmarks.