Ministral 3 14B-25-12 and Grok 4 Heavy don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Grok 4 Heavy shipped 146 days before Ministral 3 14B-25-12, so benchmark comparisons should account for the intervening progress.

Ministral 3 14B-25-12 is open weight, while Grok 4 Heavy is proprietary.

Direct benchmark comparisons are unavailable — Ministral 3 14B-25-12 and Grok 4 Heavy don't publish scores on any of the same benchmarks.