Claude Sonnet 4 vs DeepSeek R1

Compare Claude Sonnet 4 by Anthropic against DeepSeek R1 by DeepSeek, in 23 community votes, claude sonnet 4 wins 79% of head-to-head duels, context windows of 200K vs 128K, tested across 24 shared challenges. Updated February 2026.

In 23 community votes, Claude Sonnet 4 wins 79% of head-to-head duels. Claude Sonnet 4 leads in Image Generation. Based on blind community voting from the RIVAL open dataset of 23+ human preference judgments for this pair.