Claude 3 Opus vs Claude Sonnet 5
Compare Claude 3 Opus and Claude Sonnet 5, both from Anthropic, context windows of 200K vs 1.0M, tested across 12 shared challenges.
Our Verdict
Claude 3 Opus
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.
Claude Sonnet 5 is 7.5x cheaper per token — worth considering if cost matters.
Too close to call
API pricing
Cost per 1M tokens
Claude 3 Opus
Input
$15.00
Output
$75.00
Claude Sonnet 5
Input
$2.00
7.5× cheaper
Output
$10.00
7.5× cheaper
Claude Sonnet 5 is cheaper on both — 7.5× input, 7.5× output
Writing DNA
Style Comparison
Similarity
57%
Claude Sonnet 5 uses 350.5x more bold
Claude 3 Opus
Claude Sonnet 5
54%Vocabulary59%
14wSentence Length35w
0.48Hedging0.53
0.0Bold3.5
3.0Lists3.5
0.00Emoji0.79
0.00Headings1.25
0.06Transitions0.06
Based on 3 + 27 text responses
Research
What we learned reading every model
FAQ
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