Claude Instant 1.2 and Devstral Small don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Claude Instant 1.2 shipped 651 days before Devstral Small, so benchmark comparisons should account for the intervening progress.

Claude Instant 1.2 is proprietary, while Devstral Small is open weight.

Direct benchmark comparisons are unavailable — Claude Instant 1.2 and Devstral Small don't publish scores on any of the same benchmarks.