Claude Fable 5.1 & GPT-6 Astra packages are live

mvp

Startup

This document defines how to scope, build, and ship a minimum viable product: what belongs in a first release, what does not, and how to tell the…

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.