Claude 3.7 Sonnet vs OpenAI o3
Compare Claude 3.7 Sonnet by Anthropic against OpenAI o3 by OpenAI, in 35 community votes, openai o3 wins 59% of head-to-head duels, tested across 54 shared challenges. Updated May 2026.
Which is better, Claude 3.7 Sonnet or OpenAI o3?
OpenAI o3 is the better choice overall, winning 59% of 35 blind community votes on Rival. Claude 3.7 Sonnet costs $3/M input tokens vs $10/M for OpenAI o3. Compare their real outputs side by side below.
Key Differences Between Claude 3.7 Sonnet and OpenAI o3
Claude 3.7 Sonnet is made by anthropic while OpenAI o3 is from openai. On pricing, Claude 3.7 Sonnet costs $3/M input tokens vs $10/M for OpenAI o3. In community voting, In 35 community votes, OpenAI o3 wins 59% of head-to-head duels.
In 35 community votes, OpenAI o3 wins 59% of head-to-head duels. Claude 3.7 Sonnet leads in Web Design, Image Generation, while OpenAI o3 leads in Reasoning, Conversation. Based on blind community voting from the Rival open dataset of 35+ human preference judgments for this pair.
Per 1M tokens
Claude 3.7 Sonnet is cheaper on both — 3.3× input, 2.7× output
Pick OpenAI o3. In 35 blind votes, OpenAI o3 wins 59% of the time. That's not luck.
Pick Claude 3.7 Sonnet for Web Design, Image Generation. Pick OpenAI o3 for Conversation, Reasoning.
Style Comparison
Claude 3.7 Sonnet uses 4.7x more headings
