Claude Instant 1.2 and Mistral Small 3 don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Claude Instant 1.2 shipped 511 days before Mistral Small 3, so benchmark comparisons should account for the intervening progress.

Claude Instant 1.2 is proprietary, while Mistral Small 3 is open weight.

Direct benchmark comparisons are unavailable — Claude Instant 1.2 and Mistral Small 3 don't publish scores on any of the same benchmarks.