Claude 3 Sonnet vs Claude Fable 5
Compare Claude 3 Sonnet and Claude Fable 5, both from Anthropic, tested across 13 shared challenges. Updated June 2026.
Which is better, Claude 3 Sonnet or Claude Fable 5?
Claude 3 Sonnet and Claude Fable 5 are both competitive models. Claude 3 Sonnet costs $3/M input tokens vs $10/M for Claude Fable 5. Compare their real outputs side by side below.
Key Differences Between Claude 3 Sonnet and Claude Fable 5
Claude 3 Sonnet is made by anthropic while Claude Fable 5 is from anthropic. On pricing, Claude 3 Sonnet costs $3/M input tokens vs $10/M for Claude Fable 5.
API pricing
Per 1M tokens
Claude 3 Sonnet
Input
$3.00
3.3× cheaper
Output
$15.00
3.3× cheaper
Claude Fable 5
Input
$10.00
Output
$50.00
Claude 3 Sonnet is cheaper on both — 3.3× input, 3.3× output
Our Verdict
Claude Fable 5
Claude 3 SonnetRunner-up
No community votes yet. On paper, Claude Fable 5 has the edge — bigger model tier, newer, bigger context window.
Claude 3 Sonnet is 3.3x cheaper per token — worth considering if cost matters.
Too close to call
Writing DNA
Style Comparison
Similarity
43%
Claude Fable 5 uses 398.7x more bold
Claude 3 Sonnet
Claude Fable 5
48%Vocabulary60%
14wSentence Length22w
0.32Hedging0.49
0.0Bold4.0
3.6Lists3.5
0.00Emoji0.58
0.00Headings1.09
0.38Transitions0.05
Based on 4 + 27 text responses
FAQ
