Claude Opus 4
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Claude Opus 4 vs OpenAI o3
Compare Claude Opus 4 by Anthropic against OpenAI o3 by OpenAI, in 42 community votes, claude opus 4 wins 72% of head-to-head duels, tested across 33 shared challenges. Updated March 2026.
Which is better, Claude Opus 4 or OpenAI o3?
Claude Opus 4 is the better choice overall, winning 72% of 42 blind community votes on Rival. Claude Opus 4 costs $15/M input tokens vs $10/M for OpenAI o3. Compare their real outputs side by side below.
Key Differences Between Claude Opus 4 and OpenAI o3
Claude Opus 4 is made by anthropic while OpenAI o3 is from openai. On pricing, Claude Opus 4 costs $15/M input tokens vs $10/M for OpenAI o3. In community voting, In 42 community votes, Claude Opus 4 wins 72% of head-to-head duels.
In 42 community votes, Claude Opus 4 wins 72% of head-to-head duels. Claude Opus 4 leads in Web Design, Image Generation, while OpenAI o3 leads in Reasoning. Based on blind community voting from the Rival open dataset of 42+ human preference judgments for this pair.
Web Design: Claude Opus 4 wins 72% of votes
Image Generation: Claude Opus 4 wins 86% of votes
Reasoning: OpenAI o3 wins 100% of votes
Our Verdict
Claude Opus 4Winner
OpenAI o3Runner-up
Pick Claude Opus 4. In 42 blind votes, Claude Opus 4 wins 72% of the time. That's not luck.
Pick Claude Opus 4 for Image Generation, Web Design. Pick OpenAI o3 for Reasoning.
Clear winner
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