Claude Fable 5 vs Claude Haiku 4.5
Compare Claude Fable 5 and Claude Haiku 4.5, both from Anthropic, context windows of 1.0M vs 200K, tested across 53 shared challenges.
Our Verdict
Claude Fable 5
Claude Haiku 4.5Runner-up
No community votes yet. On paper, Claude Fable 5 has the edge — bigger model tier, newer, bigger context window.
Claude Haiku 4.5 is 10x cheaper per token — worth considering if cost matters.
Slight edge
API pricing
Cost per 1M tokens
Claude Fable 5
Input
$10.00
Output
$50.00
Claude Haiku 4.5
Input
$1.00
10× cheaper
Output
$5.00
10× cheaper
Claude Haiku 4.5 is cheaper on both — 10× input, 10× output
Writing DNA
Style Comparison
Similarity
66%
Claude Haiku 4.5 uses 3.5x more transitions
Claude Fable 5
Claude Haiku 4.5
60%Vocabulary61%
22wSentence Length47w
0.49Hedging0.64
4.0Bold5.1
3.5Lists6.3
0.58Emoji0.20
1.09Headings2.46
0.05Transitions0.17
Based on 27 + 24 text responses
Research
What we learned reading every model
FAQ
