Claude Opus 4 vs DeepSeek R1

Compare Claude Opus 4 by Anthropic against DeepSeek R1 by DeepSeek, in 16 community votes, claude opus 4 wins 58% of head-to-head duels, context windows of 200K vs 128K, tested across 24 shared challenges. Updated February 2026.

In 16 community votes, Claude Opus 4 wins 58% of head-to-head duels. Claude Opus 4 leads in Web Design. Based on blind community voting from the RIVAL open dataset of 16+ human preference judgments for this pair.