GPT-5.4 vs Claude Opus 4.6

Compare GPT-5.4 by OpenAI against Claude Opus 4.6 by Anthropic, in 6 community votes, gpt-5.4 wins 80% of head-to-head duels, context windows of 1.1M vs 1.0M, tested across 51 shared challenges. Updated March 2026.

Which is better, GPT-5.4 or Claude Opus 4.6?

GPT-5.4 is the better choice overall, winning 80% of 6 blind community votes on Rival. GPT-5.4 costs $2.5/M input tokens vs $5/M for Claude Opus 4.6. Context windows: 1050K vs 1000K tokens. Compare their real outputs side by side below.

Key Differences Between GPT-5.4 and Claude Opus 4.6

GPT-5.4 is made by openai while Claude Opus 4.6 is from anthropic. GPT-5.4 has a 1050K token context window compared to Claude Opus 4.6's 1000K. On pricing, GPT-5.4 costs $2.5/M input tokens vs $5/M for Claude Opus 4.6. In community voting, In 6 community votes, GPT-5.4 wins 80% of head-to-head duels.

In 6 community votes, GPT-5.4 wins 80% of head-to-head duels. GPT-5.4 leads in Reasoning. Based on blind community voting from the Rival open dataset of 6+ human preference judgments for this pair.

Reasoning: GPT-5.4 wins 67% of votes
Our Verdict
GPT-5.4
GPT-5.4Winner
Claude Opus 4.6
Claude Opus 4.6Runner-up

Pick GPT-5.4. In 6 blind votes, GPT-5.4 wins 80% of the time. That's not luck.

GPT-5.4 particularly excels in Reasoning.

Clear winner
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GPT-5.4Claude Opus 4.6
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