Claude Sonnet 4.6 vs GPT-4.5
Compare Claude Sonnet 4.6 by Anthropic against GPT-4.5 by OpenAI, context windows of 1.0M vs 128K, tested across 24 shared challenges.
Our Verdict
Claude Sonnet 4.6
GPT-4.5
No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.
Claude Sonnet 4.6 is 10x cheaper per token — worth considering if cost matters.
Too close to call
API pricing
Cost per 1M tokens
Claude Sonnet 4.6
Input
$3.00
25× cheaper
Output
$15.00
10× cheaper
GPT-4.5
Input
$75.00
Output
$150.00
Claude Sonnet 4.6 is cheaper on both — 25× input, 10× output
Writing DNA
Style Comparison
Similarity
47%
Claude Sonnet 4.6 uses 19.1x more emoji
Claude Sonnet 4.6
GPT-4.5
56%Vocabulary63%
36wSentence Length16w
0.53Hedging0.57
5.1Bold4.7
3.4Lists6.4
0.19Emoji0.00
2.10Headings1.30
0.02Transitions0.54
Based on 23 + 11 text responses
Research
What we learned reading every model
FAQ
