Claude 2.1 and Gemma 3 don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Claude 2.1 shipped 477 days before Gemma 3, so benchmark comparisons should account for the intervening progress.

Claude 2.1 is proprietary, while Gemma 3 is open weight.

Direct benchmark comparisons are unavailable — Claude 2.1 and Gemma 3 don't publish scores on any of the same benchmarks.