DeepSeek V3.1 Terminus and Magistral Medium don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Magistral Medium shipped 104 days before DeepSeek V3.1 Terminus, so benchmark comparisons should account for the intervening progress.

DeepSeek V3.1 Terminus is open weight, while Magistral Medium is proprietary.

Direct benchmark comparisons are unavailable — DeepSeek V3.1 Terminus and Magistral Medium don't publish scores on any of the same benchmarks.