Kimi Linear and Grok Code Fast 1 don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Grok Code Fast 1 shipped 34 days before Kimi Linear, so benchmark comparisons should account for the intervening progress.

Kimi Linear is open weight, while Grok Code Fast 1 is proprietary.

Direct benchmark comparisons are unavailable — Kimi Linear and Grok Code Fast 1 don't publish scores on any of the same benchmarks.