Claude 2 and DeepSeek V3 Chat don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Claude 2 shipped 509 days before DeepSeek V3 Chat, so benchmark comparisons should account for the intervening progress.

Claude 2 is proprietary, while DeepSeek V3 Chat is open weight.

Direct benchmark comparisons are unavailable — Claude 2 and DeepSeek V3 Chat don't publish scores on any of the same benchmarks.