Mistral Large 3 and o4-mini-high don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. o4-mini-high shipped 230 days before Mistral Large 3, so benchmark comparisons should account for the intervening progress.

Mistral Large 3 is open weight, while o4-mini-high is proprietary.

Direct benchmark comparisons are unavailable — Mistral Large 3 and o4-mini-high don't publish scores on any of the same benchmarks.