Claude Opus 4
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Claude Opus 4 vs GPT-4o (Omni)
Compare Claude Opus 4 by Anthropic against GPT-4o (Omni) by OpenAI, in 1 community votes, gpt-4o (omni) wins 100% of head-to-head duels, context windows of 200K vs 128K, tested across 33 shared challenges. Updated March 2026.
Which is better, Claude Opus 4 or GPT-4o (Omni)?
GPT-4o (Omni) is the better choice overall, winning 100% of 1 blind community votes on Rival. Claude Opus 4 costs $15/M input tokens vs $2.5/M for GPT-4o (Omni). Context windows: 200K vs 128K tokens. Compare their real outputs side by side below.
Key Differences Between Claude Opus 4 and GPT-4o (Omni)
Claude Opus 4 is made by anthropic while GPT-4o (Omni) is from openai. Claude Opus 4 has a 200K token context window compared to GPT-4o (Omni)'s 128K. On pricing, Claude Opus 4 costs $15/M input tokens vs $2.5/M for GPT-4o (Omni). In community voting, In 1 community votes, GPT-4o (Omni) wins 100% of head-to-head duels.
In 1 community votes, GPT-4o (Omni) wins 100% of head-to-head duels. Based on blind community voting from the Rival open dataset of 1+ human preference judgments for this pair.
Our Verdict
GPT-4o (Omni)Winner
Claude Opus 4Runner-up
Pick GPT-4o (Omni). In 1 blind votes, GPT-4o (Omni) wins 100% of the time. That's not luck.
GPT-4o (Omni) is 7.5x cheaper per token — worth considering if cost matters.
Clear winner
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