Claude Fable 5.1 & GPT-6 Astra packages are live

python-conventions

Backend

Modern Python project conventions — typing that pays for itself, pyproject.toml as the single manifest, uv and ruff, package layout, logging,…

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.