Pre 1.0 / beta GraphCool has many, often radical, API shifts. How stable do you think 1.0 will be?

This has been the core focus for the 1.0 release to have a stable foundation for many new features without the need to introduce breaking changes. There are still a couple of changes coming up until it’s out of beta, but most of the lined up changes are additive. See here for the roadmap: https://github.com/graphcool/framework/pull/1318