DeepSeek V3.1 Terminus and Grok‑2 don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Grok‑2 shipped 404 days before DeepSeek V3.1 Terminus, so benchmark comparisons should account for the intervening progress.

DeepSeek V3.1 Terminus is open weight, while Grok‑2 is proprietary.

Direct benchmark comparisons are unavailable — DeepSeek V3.1 Terminus and Grok‑2 don't publish scores on any of the same benchmarks.