Context-Tiering
- Claude Fable 5 Is Here — and the Disciplined Move Is to Route Down, Not Up
Anthropic's Fable 5 is the most capable public model yet — a new Mythos-class tier above Opus. The reflex is to route everything to it. Here's why the disciplined move is the opposite, and the two routing skills I rebuilt the day it shipped.
- Context Is Not Memory: The Context Tiering Spectrum for AI Coding Agents
Your CLAUDE.md is a monolith, not an architecture. Context tiering — hot/warm/cold by access frequency — gives an agent persistent context without drowning it.