Claude Sonnet 3.6 (2022-10-22) vs Claude Opus 5
Compare Claude Sonnet 3.6 (2022-10-22) and Claude Opus 5, both from Anthropic, context windows of 200K vs 1.0M, tested across 53 shared challenges.
Our Verdict
Claude Opus 5
Claude Sonnet 3.6 (2022-10-22)Runner-up
No community votes yet. On paper, Claude Opus 5 has the edge — bigger model tier, newer, bigger context window.
Slight edge
API pricing
Cost per 1M tokens
Claude Sonnet 3.6 (2022-10-22)
Input
$3.00
1.7× cheaper
Output
$15.00
1.7× cheaper
Claude Opus 5
Input
$5.00
Output
$25.00
Claude Sonnet 3.6 (2022-10-22) is cheaper on both — 1.7× input, 1.7× output
Writing DNA
Style Comparison
Similarity
36%
Claude Opus 5 uses 1.7x more emoji
Claude Sonnet 3.6 (2022-10-22)
Claude Opus 5
66%Vocabulary54%
74wSentence Length21w
0.72Hedging0.40
0.3Bold3.9
8.9Lists1.9
0.00Emoji0.02
0.06Headings0.71
0.09Transitions0.05
Based on 21 + 27 text responses
Research
What we learned reading every model
FAQ
