Composer and DeepSeek V3-0324 don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. DeepSeek V3-0324 shipped 219 days before Composer, so benchmark comparisons should account for the intervening progress.

Composer is proprietary, while DeepSeek V3-0324 is open weight.

Direct benchmark comparisons are unavailable — Composer and DeepSeek V3-0324 don't publish scores on any of the same benchmarks.