Claude Sonnet 4.6 vs GPT-4o (Omni)
Compare Claude Sonnet 4.6 by Anthropic against GPT-4o (Omni) by OpenAI, context windows of 1.0M vs 128K, tested across 53 shared challenges.
Our Verdict
Claude Sonnet 4.6
GPT-4o (Omni)
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 4.6
Input
$3.00
Output
$15.00
GPT-4o (Omni)
Input
$2.50
1.2× cheaper
Output
$10.00
1.5× cheaper
GPT-4o (Omni) is cheaper on both — 1.2× input, 1.5× output
Writing DNA
Style Comparison
Similarity
46%
GPT-4o (Omni) uses 13.5x more transitions
Claude Sonnet 4.6
GPT-4o (Omni)
56%Vocabulary54%
36wSentence Length18w
0.53Hedging0.72
5.1Bold7.3
3.4Lists5.6
0.19Emoji0.03
2.10Headings1.40
0.02Transitions0.26
Based on 23 + 24 text responses
Research
What we learned reading every model
FAQ
