Claude 3.7 Thinking Sonnet vs ChatGPT-4o (March 2025)

Compare Claude 3.7 Thinking Sonnet by Anthropic against ChatGPT-4o (March 2025) by OpenAI, in 4 community votes, claude 3.7 thinking sonnet wins 100% of head-to-head duels, context windows of 200K vs 128K, tested across 32 shared challenges. Updated February 2026.

In 4 community votes, Claude 3.7 Thinking Sonnet wins 100% of head-to-head duels. Based on blind community voting from the RIVAL open dataset of 4+ human preference judgments for this pair.