{"slug":"ory-keto","name":"Ory Keto","domain":"ory.com","best_rank":4,"categories":1,"entries":[{"slug":"best-relationship-based-access-control-engine","title":"Best relationship-based access control engine","rank":4,"of":7,"score":5,"appearances":2,"modelRanks":{"ChatGPT":3,"Claude":4},"reason":"A capable ReBAC-first Zanzibar implementation with REST and gRPC APIs, transitive graph evaluation, broad SDK coverage, straightforward SQL-backed self-hosting, and a credible managed path through Ory Network; a strong fit when authorization sits alongside Ory’s identity stack.","reasons":[{"model":"ChatGPT","reason":"A capable ReBAC-first Zanzibar implementation with REST and gRPC APIs, transitive graph evaluation, broad SDK coverage, straightforward SQL-backed self-hosting, and a credible managed path through Ory Network; a strong fit when authorization sits alongside Ory’s identity stack."},{"model":"Claude","reason":"The original open-source Zanzibar interpretation, integrates naturally if you're already on the Ory stack (Kratos/Hydra/Oathkeeper) or Ory Network, with the Ory Permission Language (OPL, TypeScript-flavored) making models approachable to app developers; solid, simple, and proven for straightforward relationship models."}],"fixes":[{"model":"ChatGPT","fix":"Its greatest value is tied to the broader Ory ecosystem, while standalone users get a smaller tooling and community footprint than SpiceDB or OpenFGA."},{"model":"Claude","fix":"Development pace and feature depth have lagged the category — no caveats/conditions comparable to SpiceDB or OpenFGA, and it's mostly compelling as part of the Ory suite rather than as a standalone best-of-breed pick."}],"updated":"2026-07-16","api":"https://modelsagree.com/api/v1/best/best-relationship-based-access-control-engine.json"}],"page":"https://modelsagree.com/product/ory-keto","check":"https://modelsagree.com/check?q=Ory%20Keto","updated":"2026-07-17T08:03:51.047Z","attribution":"modelsagree.com, CC BY 4.0"}