Claude 3.7 Thinking Sonnet vs GPT-4.5
Compare Claude 3.7 Thinking Sonnet by Anthropic against GPT-4.5 by OpenAI, in 24 community votes, claude 3.7 thinking sonnet wins 73% of head-to-head duels, context windows of 200K vs 128K, tested across 25 shared challenges.
Image Generation: Claude 3.7 Thinking Sonnet wins 75% of votes
Reasoning: Claude 3.7 Thinking Sonnet wins 71% of votes
Web Design: Claude 3.7 Thinking Sonnet wins 100% of votes
Conversation: GPT-4.5 wins 100% of votes
Our Verdict
Claude 3.7 Thinking SonnetWinner
GPT-4.5Runner-up
Pick Claude 3.7 Thinking Sonnet. In 24 blind votes, Claude 3.7 Thinking Sonnet wins 73% of the time. That's not luck.
Pick Claude 3.7 Thinking Sonnet for Web Design, Image Generation, Reasoning. Pick GPT-4.5 for Conversation. Claude 3.7 Thinking Sonnet is 5.0x cheaper per token — worth considering if cost matters.
Clear winner
API pricing
Cost per 1M tokens
Claude 3.7 Thinking Sonnet
Input
$6.00
13× cheaper
Output
$30.00
5.0× cheaper
GPT-4.5
Input
$75.00
Output
$150.00
Claude 3.7 Thinking Sonnet is cheaper on both — 13× input, 5.0× output
Writing DNA
Style Comparison
Similarity
59%
Claude 3.7 Thinking Sonnet uses 3.1x more sentence length
Claude 3.7 Thinking Sonnet
GPT-4.5
61%Vocabulary63%
49wSentence Length16w
0.64Hedging0.57
2.2Bold4.7
4.5Lists6.4
0.00Emoji0.00
1.81Headings1.30
0.21Transitions0.54
Based on 21 + 11 text responses
Research
What we learned reading every model
FAQ
