GPT-5 Nano vs Claude Sonnet 4

Compare GPT-5 Nano by OpenAI against Claude Sonnet 4 by Anthropic, in 20 community votes, claude sonnet 4 wins 100% of head-to-head duels, tested across 31 shared challenges. Updated February 2026.

In 20 community votes, Claude Sonnet 4 wins 100% of head-to-head duels. Claude Sonnet 4 leads in Web Design, Image Generation, Conversation. Based on blind community voting from the RIVAL open dataset of 20+ human preference judgments for this pair.