Claude Opus 4 vs Claude Sonnet 4
Compare Claude Opus 4 and Claude Sonnet 4, both from Anthropic, in 258 community votes, claude opus 4 wins 65% of head-to-head duels, context windows of 200K vs 200K, tested across 53 shared challenges.
Web Design: Claude Opus 4 wins 66% of votes
Image Generation: Claude Opus 4 and Claude Sonnet 4 are tied
Reasoning: Claude Opus 4 wins 73% of votes
Conversation: Claude Opus 4 and Claude Sonnet 4 are tied
Analysis: Claude Opus 4 wins 75% of votes
Planning: Claude Opus 4 and Claude Sonnet 4 are tied
Our Verdict
Claude Opus 4Winner
Claude Sonnet 4Runner-up
Pick Claude Opus 4. In 258 blind votes, Claude Opus 4 wins 65% of the time. That's not luck.
Claude Opus 4 particularly excels in Analysis, Reasoning, 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
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
73%
Claude Sonnet 4 uses 7.9x more emoji
Claude Opus 4
Claude Sonnet 4
64%Vocabulary62%
62wSentence Length111w
0.52Hedging0.40
4.4Bold5.0
9.1Lists9.3
0.11Emoji0.88
1.87Headings2.16
0.27Transitions0.33
Based on 16 + 17 text responses
Research
What we learned reading every model
FAQ
