Claude Opus 4.1 vs Claude Opus 4

Compare Claude Opus 4.1 and Claude Opus 4, both from Anthropic, in 19 community votes, claude opus 4 wins 56% of head-to-head duels, context windows of 200K vs 200K, tested across 22 shared challenges. Updated February 2026.

In 19 community votes, Claude Opus 4 wins 56% of head-to-head duels. Claude Opus 4 leads in Image Generation. Based on blind community voting from the RIVAL open dataset of 19+ human preference judgments for this pair.

Image Generation: Claude Opus 4 wins 67% of votes
Web Design: Claude Opus 4.1 and Claude Opus 4 are tied
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