Claude Sonnet 4 vs GPT-5
Compare Claude Sonnet 4 by Anthropic against GPT-5 by OpenAI, in 93 community votes, gpt-5 wins 55% of head-to-head duels, context windows of 200K vs 400K, tested across 52 shared challenges.
Web Design: Claude Sonnet 4 wins 69% of votes
Image Generation: GPT-5 wins 80% of votes
Reasoning: GPT-5 wins 67% of votes
Conversation: Claude Sonnet 4 wins 57% of votes
Analysis: GPT-5 wins 100% of votes
Our Verdict
GPT-5Winner
Claude Sonnet 4Runner-up
GPT-5 has the edge overall. In 93 blind votes, GPT-5 wins 55% of the time.
Pick Claude Sonnet 4 for Web Design, Conversation. Pick GPT-5 for Analysis, Image Generation, Reasoning.
Slight edge
API pricing
Cost per 1M tokens
Claude Sonnet 4
Input
$3.00
Output
$15.00
GPT-5
Input
$1.25
2.4× cheaper
Output
$10.00
1.5× cheaper
GPT-5 is cheaper on both — 2.4× input, 1.5× output
Writing DNA
Style Comparison
Similarity
42%
Claude Sonnet 4 uses 87.9x more emoji
Claude Sonnet 4
GPT-5
62%Vocabulary65%
111wSentence Length13w
0.40Hedging0.20
5.0Bold0.2
9.3Lists4.6
0.88Emoji0.00
2.16Headings0.16
0.33Transitions0.03
Based on 17 + 16 text responses
Research
What we learned reading every model
FAQ
