Claude Opus 4.1 vs Claude Sonnet 4
Compare Claude Opus 4.1 and Claude Sonnet 4, both from Anthropic, in 23 community votes, claude opus 4.1 wins 80% of head-to-head duels, context windows of 200K vs 200K, tested across 53 shared challenges.
Image Generation: Claude Opus 4.1 wins 82% of votes
Web Design: Claude Opus 4.1 wins 71% of votes
Reasoning: Claude Opus 4.1 wins 100% of votes
Our Verdict
Claude Opus 4.1Winner
Claude Sonnet 4Runner-up
Pick Claude Opus 4.1. In 23 blind votes, Claude Opus 4.1 wins 80% of the time. That's not luck.
Claude Opus 4.1 particularly excels in Reasoning, Image Generation, Web Design. Claude Sonnet 4 is 5.0x cheaper per token — worth considering if cost matters.
Clear winner
API pricing
Cost per 1M tokens
Claude Opus 4.1
Input
$15.00
Output
$75.00
Claude Sonnet 4
Input
$3.00
5.0× cheaper
Output
$15.00
5.0× cheaper
Claude Sonnet 4 is cheaper on both — 5.0× input, 5.0× output
Writing DNA
Style Comparison
Similarity
95%
Claude Sonnet 4 uses 2.6x more transitions
Claude Opus 4.1
Claude Sonnet 4
61%Vocabulary62%
87wSentence Length111w
0.54Hedging0.40
5.1Bold5.0
6.7Lists9.3
0.38Emoji0.88
1.68Headings2.16
0.13Transitions0.33
Based on 17 + 17 text responses
Research
What we learned reading every model
FAQ
