Claude Opus 4.6 vs Claude Sonnet 5
Compare Claude Opus 4.6 and Claude Sonnet 5, both from Anthropic, context windows of 1.0M vs 1.0M, tested across 53 shared challenges.
Our Verdict
Claude Opus 4.6
Claude Sonnet 5
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 Opus 4.6
Input
$5.00
Output
$25.00
Claude Sonnet 5
Input
$2.00
2.5× cheaper
Output
$10.00
2.5× cheaper
Claude Sonnet 5 is cheaper on both — 2.5× input, 2.5× output
Writing DNA
Style Comparison
Similarity
76%
Claude Sonnet 5 uses 3.8x more emoji
Claude Opus 4.6
Claude Sonnet 5
53%Vocabulary59%
35wSentence Length35w
0.68Hedging0.53
5.2Bold3.5
2.9Lists3.5
0.21Emoji0.79
1.34Headings1.25
0.03Transitions0.06
Based on 23 + 27 text responses
Research
What we learned reading every model
FAQ
