BREAKING
Fable 5 Lands In Devin Fusion
0
%
lower cost at Fable quality
0
%
potential Fable 5 savings
0
%
PRs via auto routing
Opus 4.8 vs Fusion Per Task
Opus 4.8
3.24
Fusion
2.38
How Fusion Splits The Work
1
Frontier plans
↓
2
Sidekicks retrieve & test
↓
3
Frontier final review
Upside And Open Questions
Reported wins
●
Cheaper than calling Fable 5
●
Redeployed July 1, 2026
●
Multi-model routing softens risk
Caveats
●
Multi-file scores fell 54 to 27
●
Cognition's own benchmarks only
A Test For Agentic Coding
AI NEWS BLITZ
Cognition has integrated Anthropic's Claude Fable 5 into its Devin Fusion coding harness.