Ministral 3B and o3-pro don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Ministral 3B shipped 252 days before o3-pro, so benchmark comparisons should account for the intervening progress.

Ministral 3B is open weight, while o3-pro is proprietary.

Direct benchmark comparisons are unavailable — Ministral 3B and o3-pro don't publish scores on any of the same benchmarks.