Devstral Small and Grok 2.5 don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Devstral Small shipped 72 days before Grok 2.5, so benchmark comparisons should account for the intervening progress.

Devstral Small is open weight, while Grok 2.5 is proprietary.

Direct benchmark comparisons are unavailable — Devstral Small and Grok 2.5 don't publish scores on any of the same benchmarks.