Claude Sonnet 4 vs GPT-5.2 Chat
Compare Claude Sonnet 4 by Anthropic against GPT-5.2 Chat by OpenAI, context windows of 200K vs 128K, tested across 53 shared challenges.
Our Verdict
Claude Sonnet 4
GPT-5.2 Chat
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
API pricing
Cost per 1M tokens
Claude Sonnet 4
Input
$3.00
Output
$15.00
GPT-5.2 Chat
Input
$1.75
1.7× cheaper
Output
$14.00
1.1× cheaper
GPT-5.2 Chat is cheaper on both — 1.7× input, 1.1× output
Writing DNA
Style Comparison
Similarity
51%
Claude Sonnet 4 uses 6.8x more sentence length
Claude Sonnet 4
GPT-5.2 Chat
62%Vocabulary66%
111wSentence Length16w
0.40Hedging0.41
5.0Bold9.6
9.3Lists4.4
0.88Emoji0.31
2.16Headings1.20
0.33Transitions0.27
Based on 17 + 16 text responses
Research
What we learned reading every model
FAQ
