ChatGPT-4o (March 2025) vs Claude Sonnet 4
Compare ChatGPT-4o (March 2025) by OpenAI against Claude Sonnet 4 by Anthropic, in 7 community votes, claude sonnet 4 wins 67% of head-to-head duels, context windows of 128K vs 200K, tested across 32 shared challenges.
Image Generation: Claude Sonnet 4 wins 100% of votes
Web Design: ChatGPT-4o (March 2025) and Claude Sonnet 4 are tied
Our Verdict
Claude Sonnet 4Winner
ChatGPT-4o (March 2025)Runner-up
Pick Claude Sonnet 4. In 7 blind votes, Claude Sonnet 4 wins 67% of the time. That's not luck.
Claude Sonnet 4 particularly excels in Image Generation.
Clear winner
API pricing
Cost per 1M tokens
ChatGPT-4o (March 2025)
Input
$5.00
Output
$15.00
Claude Sonnet 4
Input
$3.00
1.7× cheaper
Output
$15.00
Writing DNA
Style Comparison
Similarity
63%
Claude Sonnet 4 uses 6.8x more transitions
ChatGPT-4o (March 2025)
Claude Sonnet 4
55%Vocabulary62%
24wSentence Length111w
0.52Hedging0.40
3.3Bold5.0
6.0Lists9.3
0.94Emoji0.88
0.63Headings2.16
0.05Transitions0.33
Based on 15 + 17 text responses
Research
What we learned reading every model
FAQ
