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Claude Sonnet 4 vs Grok Code Fast 1

Compare Claude Sonnet 4 by Anthropic against Grok Code Fast 1 by xAI, in 203 community votes, claude sonnet 4 wins 68% of head-to-head duels, context windows of 200K vs 256K, tested across 31 shared challenges. Updated March 2026.

In 203 community votes, Claude Sonnet 4 wins 68% of head-to-head duels. Claude Sonnet 4 leads in Web Design, Image Generation, Conversation, while Grok Code Fast 1 leads in Reasoning, Analysis. Based on blind community voting from the Rival open dataset of 203+ human preference judgments for this pair.

Web Design: Claude Sonnet 4 wins 59% of votes
Image Generation: Claude Sonnet 4 wins 94% of votes
Reasoning: Grok Code Fast 1 wins 73% of votes
Analysis: Grok Code Fast 1 wins 56% of votes
Conversation: Claude Sonnet 4 wins 83% of votes
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