Claude 3 Sonnet vs Claude Opus 4.7
Compare Claude 3 Sonnet and Claude Opus 4.7, both from Anthropic, tested across 13 shared challenges. Updated May 2026.
Which is better, Claude 3 Sonnet or Claude Opus 4.7?
Claude 3 Sonnet and Claude Opus 4.7 are both competitive models. Claude 3 Sonnet costs $3/M input tokens vs $5/M for Claude Opus 4.7. Compare their real outputs side by side below.
Key Differences Between Claude 3 Sonnet and Claude Opus 4.7
Claude 3 Sonnet is made by anthropic while Claude Opus 4.7 is from anthropic. On pricing, Claude 3 Sonnet costs $3/M input tokens vs $5/M for Claude Opus 4.7.
API pricing
Per 1M tokens
Claude 3 Sonnet
Input
$3.00
1.7× cheaper
Output
$15.00
1.7× cheaper
Claude Opus 4.7
Input
$5.00
Output
$25.00
Claude 3 Sonnet is cheaper on both — 1.7× input, 1.7× output
Our Verdict
Claude Opus 4.7
Claude 3 SonnetRunner-up
No community votes yet. On paper, Claude Opus 4.7 has the edge — bigger model tier, newer, bigger context window.
Too close to call
Writing DNA
Style Comparison
Similarity
33%
Claude Opus 4.7 uses 459.5x more bold
Claude 3 Sonnet
Claude Opus 4.7
48%Vocabulary64%
14wSentence Length20w
0.32Hedging0.51
0.0Bold4.6
3.6Lists3.8
0.00Emoji0.86
0.00Headings1.60
0.38Transitions0.03
Based on 4 + 27 text responses
FAQ
