Claude 3.7 Thinking Sonnet vs GPT-4.1 Nano
Compare Claude 3.7 Thinking Sonnet by Anthropic against GPT-4.1 Nano by OpenAI, context windows of 200K vs 1.0M, tested across 54 shared challenges.
Our Verdict
Claude 3.7 Thinking Sonnet
GPT-4.1 Nano
No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.
GPT-4.1 Nano is 75x cheaper per token — worth considering if cost matters.
Too close to call
API pricing
Cost per 1M tokens
Claude 3.7 Thinking Sonnet
Input
$6.00
Output
$30.00
GPT-4.1 Nano
Input
$0.10
60× cheaper
Output
$0.40
75× cheaper
GPT-4.1 Nano is cheaper on both — 60× input, 75× output
Writing DNA
Style Comparison
Similarity
59%
Claude 3.7 Thinking Sonnet uses 2.5x more headings
Claude 3.7 Thinking Sonnet
GPT-4.1 Nano
61%Vocabulary57%
49wSentence Length25w
0.64Hedging0.72
2.2Bold5.6
4.5Lists4.9
0.00Emoji0.00
1.81Headings0.71
0.21Transitions0.22
Based on 21 + 24 text responses
Research
What we learned reading every model
FAQ
