Claude Opus 4.5 vs Kimi K2

Compare Claude Opus 4.5 by Anthropic against Kimi K2 by Moonshot AI, in 1 community votes, claude opus 4.5 wins 100% of head-to-head duels, tested across 35 shared challenges. Updated February 2026.

In 1 community votes, Claude Opus 4.5 wins 100% of head-to-head duels. Based on blind community voting from the RIVAL open dataset of 1+ human preference judgments for this pair.

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