Claude 1 and Mistral Small 3 don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Claude 1 shipped 659 days before Mistral Small 3, so benchmark comparisons should account for the intervening progress.

Claude 1 is proprietary, while Mistral Small 3 is open weight.

Direct benchmark comparisons are unavailable — Claude 1 and Mistral Small 3 don't publish scores on any of the same benchmarks.