Claude Opus 4.6 vs GPT-5.4 Pro
Compare Claude Opus 4.6 by Anthropic against GPT-5.4 Pro by OpenAI, in 21 community votes, claude opus 4.6 wins 76% of head-to-head duels, context windows of 1.0M vs 1.1M, tested across 18 shared challenges.
Web Design: Claude Opus 4.6 and GPT-5.4 Pro are tied
Reasoning: Claude Opus 4.6 wins 100% of votes
Conversation: Claude Opus 4.6 wins 80% of votes
Financial Modeling: Claude Opus 4.6 wins 100% of votes
Our Verdict
Claude Opus 4.6Winner
GPT-5.4 ProRunner-up
Pick Claude Opus 4.6. In 21 blind votes, Claude Opus 4.6 wins 76% of the time. That's not luck.
Claude Opus 4.6 particularly excels in Reasoning, Financial Modeling, Conversation. Claude Opus 4.6 is 7.2x cheaper per token — worth considering if cost matters.
Clear winner
API pricing
Cost per 1M tokens
Claude Opus 4.6
Input
$5.00
6.0× cheaper
Output
$25.00
7.2× cheaper
GPT-5.4 Pro
Input
$30.00
Output
$180.00
Claude Opus 4.6 is cheaper on both — 6.0× input, 7.2× output
Writing DNA
Style Comparison
Similarity
66%
Claude Opus 4.6 uses 20.7x more emoji
Claude Opus 4.6
GPT-5.4 Pro
53%Vocabulary50%
35wSentence Length35w
0.68Hedging0.70
5.2Bold7.5
2.9Lists8.3
0.21Emoji0.00
1.34Headings2.52
0.03Transitions0.01
Based on 23 + 12 text responses
Research
What we learned reading every model
FAQ
