Pixtral 24.09 and o1-preview don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Pixtral 24.09 shipped 11 days before o1-preview, so benchmark comparisons should account for the intervening progress.

Pixtral 24.09 is open weight, while o1-preview is proprietary.

Direct benchmark comparisons are unavailable — Pixtral 24.09 and o1-preview don't publish scores on any of the same benchmarks.