By default it uses pi agent core + pi ai (from the excellent pi coding agent) as a multi model runtime but also supports a Claude Agent SDK runtime.
I can have an implementation and review process of an OpenSpec change run anywhere from 2 hours to 24+ hours going through review/fix/verification rounds automatically until the implementation matches the spec and any additional reviewers are done finding issues after the fix rounds.
it's going to be fully open sourced in the next two weeks and fully free to use
