BREAKING
Anthropic Launches Claude Fable 5
0
M
context tokens
0
k
max output
SWE-Bench Pro-equivalent score
Fable 5
80.3
Opus 4.8
69.2
GPT-5.5
58.6
Fable 5 vs Mythos 5
Claude Fable 5
Public
●
Strengthened guardrails
●
Input $10 / Output $50 per 1M
Claude Mythos 5
Partners
●
Project Glasswing only
●
Some safety measures removed
Safety vs utility debate
Balancing safety and utility
AI NEWS BLITZ
Anthropic has unveiled Claude Fable 5, its most capable public model yet.