GPT-4.1 nano and Grok 2.5 don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. GPT-4.1 nano shipped 109 days before Grok 2.5, so benchmark comparisons should account for the intervening progress.

Published specifications for these two models are limited — see each model page for the latest details.

Direct benchmark comparisons are unavailable — GPT-4.1 nano and Grok 2.5 don't publish scores on any of the same benchmarks.