Claude 3.7 Sonnet vs GPT-5 Nano
Compare Claude 3.7 Sonnet by Anthropic against GPT-5 Nano by OpenAI, tested across 55 shared challenges. Updated May 2026.
Which is better, Claude 3.7 Sonnet or GPT-5 Nano?
Claude 3.7 Sonnet and GPT-5 Nano are both competitive models. Compare their real outputs side by side below.
Key Differences Between Claude 3.7 Sonnet and GPT-5 Nano
Claude 3.7 Sonnet is made by anthropic while GPT-5 Nano is from openai.
API pricing
Per 1M tokens
Claude 3.7 Sonnet
Input
$3.00
Output
$15.00
GPT-5 Nano
Input
—
Output
—
Our Verdict
Claude 3.7 Sonnet
GPT-5 Nano
No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.
Too close to call
Writing DNA
Style Comparison
Similarity
44%
Claude 3.7 Sonnet uses 121.0x more bold
Claude 3.7 Sonnet
GPT-5 Nano
62%Vocabulary59%
35wSentence Length25w
0.99Hedging0.23
1.2Bold0.0
4.3Lists4.2
0.00Emoji0.00
1.78Headings0.00
0.23Transitions0.01
Based on 13 + 14 text responses
FAQ
