Claude 3 Sonnet vs GPT-5
Compare Claude 3 Sonnet by Anthropic against GPT-5 by OpenAI, tested across 13 shared challenges.
Our Verdict
GPT-5
Claude 3 SonnetRunner-up
No community votes yet. On paper, GPT-5 has the edge — bigger model tier, newer, bigger context window.
Too close to call
API pricing
Cost per 1M tokens
Claude 3 Sonnet
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
46%
GPT-5 uses 18.9x more bold
Claude 3 Sonnet
GPT-5
48%Vocabulary65%
14wSentence Length13w
0.32Hedging0.20
0.0Bold0.2
3.6Lists4.6
0.00Emoji0.00
0.00Headings0.16
0.38Transitions0.03
Based on 4 + 16 text responses
Research
What we learned reading every model
FAQ
