Claude Fable 5 vs OpenAI o4 Mini High
Compare Claude Fable 5 by Anthropic against OpenAI o4 Mini High by OpenAI, context windows of 1.0M vs 200K, tested across 53 shared challenges.
Our Verdict
Claude Fable 5
OpenAI o4 Mini HighRunner-up
No community votes yet. On paper, Claude Fable 5 has the edge — bigger model tier, newer, bigger context window.
OpenAI o4 Mini High is 11x 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
OpenAI o4 Mini High
Input
$1.10
9.1× cheaper
Output
$4.40
11× cheaper
OpenAI o4 Mini High is cheaper on both — 9.1× input, 11× output
Writing DNA
Style Comparison
Similarity
50%
Claude Fable 5 uses 398.7x more bold
Claude Fable 5
OpenAI o4 Mini High
60%Vocabulary70%
22wSentence Length18w
0.49Hedging0.33
4.0Bold0.0
3.5Lists1.3
0.58Emoji0.02
1.09Headings0.00
0.05Transitions0.04
Based on 27 + 14 text responses
Research
What we learned reading every model
FAQ
