Claude Sonnet 4.6 vs GPT-5 Pro
Compare Claude Sonnet 4.6 by Anthropic against GPT-5 Pro by OpenAI, context windows of 1.0M vs 400K, tested across 41 shared challenges.
Our Verdict
Claude Sonnet 4.6
GPT-5 Pro
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 8.0x 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
5.0× cheaper
Output
$15.00
8.0× cheaper
GPT-5 Pro
Input
$15.00
Output
$120.00
Claude Sonnet 4.6 is cheaper on both — 5.0× input, 8.0× output
Writing DNA
Style Comparison
Similarity
30%
Claude Sonnet 4.6 uses 507.4x more bold
Claude Sonnet 4.6
GPT-5 Pro
56%Vocabulary65%
36wSentence Length15w
0.53Hedging0.32
5.1Bold0.0
3.4Lists2.9
0.19Emoji0.00
2.10Headings0.00
0.02Transitions0.01
Based on 23 + 11 text responses
Research
What we learned reading every model
FAQ
