Kimi Linear 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 442 days before Kimi Linear, so benchmark comparisons should account for the intervening progress.

Kimi Linear is open weight, while Grok‑2 is proprietary.

Direct benchmark comparisons are unavailable — Kimi Linear and Grok‑2 don't publish scores on any of the same benchmarks.