Claude Opus 4 vs GPT-5
Compare Claude Opus 4 by Anthropic against GPT-5 by OpenAI, in 57 community votes, claude opus 4 wins 60% of head-to-head duels, context windows of 200K vs 400K, tested across 51 shared challenges.
Web Design: Claude Opus 4 wins 77% of votes
Image Generation: GPT-5 wins 57% of votes
Reasoning: GPT-5 wins 60% of votes
Conversation: Claude Opus 4 wins 67% of votes
Our Verdict
Claude Opus 4Winner
GPT-5Runner-up
Pick Claude Opus 4. In 57 blind votes, Claude Opus 4 wins 60% of the time. That's not luck.
Pick Claude Opus 4 for Web Design, Conversation. Pick GPT-5 for Reasoning, Image Generation. GPT-5 is 7.5x cheaper per token — worth considering if cost matters.
Clear winner
API pricing
Cost per 1M tokens
Claude Opus 4
Input
$15.00
Output
$75.00
GPT-5
Input
$1.25
12× cheaper
Output
$10.00
7.5× cheaper
GPT-5 is cheaper on both — 12× input, 7.5× output
Writing DNA
Style Comparison
Similarity
51%
Claude Opus 4 uses 11.2x more emoji
Claude Opus 4
GPT-5
64%Vocabulary65%
62wSentence Length13w
0.52Hedging0.20
4.4Bold0.2
9.1Lists4.6
0.11Emoji0.00
1.87Headings0.16
0.27Transitions0.03
Based on 16 + 16 text responses
Research
What we learned reading every model
FAQ
