Claude Fable 5.1 & GPT-6 Astra packages are live

replication

Database

Read replicas, failover and lag — what replication actually guarantees, how to route reads safely, and how to avoid promoting a replica that has lost…

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.