Codestral Mamba 7B and o3-mini don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Codestral Mamba 7B shipped 199 days before o3-mini, so benchmark comparisons should account for the intervening progress.

Codestral Mamba 7B is open weight, while o3-mini is proprietary.

Direct benchmark comparisons are unavailable — Codestral Mamba 7B and o3-mini don't publish scores on any of the same benchmarks.