Gemini 3.1 Flash and Devstral Small 2 (24B) don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Devstral Small 2 (24B) shipped 79 days before Gemini 3.1 Flash, so benchmark comparisons should account for the intervening progress.

Gemini 3.1 Flash is proprietary, while Devstral Small 2 (24B) is open weight.

Direct benchmark comparisons are unavailable — Gemini 3.1 Flash and Devstral Small 2 (24B) don't publish scores on any of the same benchmarks.