Claude Sonnet 4 vs DeepSeek R1 0528

Compare Claude Sonnet 4 by Anthropic against DeepSeek R1 0528 by DeepSeek, in 39 community votes, claude sonnet 4 wins 75% of head-to-head duels, context windows of 200K vs 164K, tested across 19 shared challenges. Updated February 2026.

In 39 community votes, Claude Sonnet 4 wins 75% of head-to-head duels. Claude Sonnet 4 leads in Image Generation, Web Design. Based on blind community voting from the RIVAL open dataset of 39+ human preference judgments for this pair.

Image Generation: Claude Sonnet 4 wins 76% of votes
Web Design: Claude Sonnet 4 wins 86% of votes
Analysis: Claude Sonnet 4 and DeepSeek R1 0528 are tied
Conversation: Claude Sonnet 4 and DeepSeek R1 0528 are tied
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