BREAKING
Anthropic Releases Claude Fable 5
0
M
context tokens
0
k
output tokens
AutomationBench Score
Fable 5
16.1
Opus 4.8
8.3
GPT-5.5
6.3
0
$
per M input
0
$
per M output
Strengths vs Concerns
Strengths
●
Multi-day autonomy
●
Refactoring and app builds
●
Self-verification
Concerns
●
High cost
●
Heavy token use
●
Slow, guardrails
Betting on Long-Horizon Autonomy
AI NEWS BLITZ
Anthropic has launched Claude Fable 5, its model built for long-horizon autonomy.