Claude 3.7 Sonnet vs OpenAI o3
Compare Claude 3.7 Sonnet by Anthropic against OpenAI o3 by OpenAI, in 35 community votes, openai o3 wins 59% of head-to-head duels, tested across 54 shared challenges.
Web Design: Claude 3.7 Sonnet wins 60% of votes
Image Generation: Claude 3.7 Sonnet wins 57% of votes
Reasoning: OpenAI o3 wins 75% of votes
Conversation: OpenAI o3 wins 100% of votes
Our Verdict
OpenAI o3Winner
Claude 3.7 SonnetRunner-up
Pick OpenAI o3. In 35 blind votes, OpenAI o3 wins 59% of the time. That's not luck.
Pick Claude 3.7 Sonnet for Web Design, Image Generation. Pick OpenAI o3 for Conversation, Reasoning.
Clear winner
API pricing
Cost per 1M tokens
Claude 3.7 Sonnet
Input
$3.00
3.3× cheaper
Output
$15.00
2.7× cheaper
OpenAI o3
Input
$10.00
Output
$40.00
Claude 3.7 Sonnet is cheaper on both — 3.3× input, 2.7× output
Writing DNA
Style Comparison
Similarity
47%
Claude 3.7 Sonnet uses 4.7x more headings
Claude 3.7 Sonnet
OpenAI o3
62%Vocabulary68%
35wSentence Length14w
0.99Hedging0.26
1.2Bold0.7
4.3Lists3.0
0.00Emoji0.00
1.78Headings0.38
0.23Transitions0.12
Based on 13 + 16 text responses
Research
What we learned reading every model
FAQ
