Gemini 1.0 Ultra and Devstral Small don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Gemini 1.0 Ultra shipped 468 days before Devstral Small, so benchmark comparisons should account for the intervening progress.

Gemini 1.0 Ultra is proprietary, while Devstral Small is open weight.

Direct benchmark comparisons are unavailable — Gemini 1.0 Ultra and Devstral Small don't publish scores on any of the same benchmarks.