Claude Fable 5.1 & GPT-6 Astra packages are live

folder-structure

Frontend

Organising a frontend codebase — colocation by feature, import boundaries enforced by tooling, naming, and the shared layer that becomes a dumping…

Choose your model

Available for 11 model families. The engineering substance is the same in each; the structure, checklist phrasing and constraint ordering are tuned per family.