{"slug":"permify","name":"Permify","domain":"permify.co","best_rank":3,"categories":1,"entries":[{"slug":"best-relationship-based-access-control-engine","title":"Best relationship-based access control engine","rank":3,"of":7,"score":10,"appearances":4,"modelRanks":{"ChatGPT":4,"Claude":3,"Gemini":4,"Grok":3},"reason":"Fast-moving open-source Zanzibar-style engine that deliberately blends ReBAC with attribute-based rules in one schema, has a good playground and data-sync tooling for keeping relationships current from existing databases, and offers a lighter operational footprint than SpiceDB while supporting tenancy natively — strong value for mid-size teams wanting self-hosted FGA without a cluster.","reasons":[{"model":"Claude","reason":"Fast-moving open-source Zanzibar-style engine that deliberately blends ReBAC with attribute-based rules in one schema, has a good playground and data-sync tooling for keeping relationships current from existing databases, and offers a lighter operational footprint than SpiceDB while supporting tenancy natively — strong value for mid-size teams wanting self-hosted FGA without a cluster."},{"model":"Grok","reason":"Solid OSS Zanzibar implementation with growing real-world adoption, strong multi-tenant focus, good performance, and developer-friendly design that balances fidelity to the model with practicality for SaaS teams."},{"model":"ChatGPT","reason":"A practical open-source ReBAC engine with readable modeling, native multi-tenancy, contextual tuples, schema versioning, testing support, and useful RBAC/ABAC combinations; particularly compelling for multi-tenant SaaS teams wanting strong capabilities without adopting the largest platforms."},{"model":"Gemini","reason":"A developer-centric open-source engine with an elegant YAML-based schema modeler, built-in multi-tenancy support, and pluggable database backends (Postgres, MySQL, CockroachDB). It offers a lighter operational footprint than SpiceDB, making it an excellent middle-ground option for rapidly iterating teams."}],"fixes":[{"model":"ChatGPT","fix":"It has less production validation, ecosystem depth, operational documentation, and managed-service maturity than the leaders."},{"model":"Claude","fix":"Much smaller community and production track record than SpiceDB/OpenFGA, and the commercial company behind it is young — a real bet on longevity for a system this load-bearing."},{"model":"Gemini","fix":"Lacks the deep enterprise adoption, large-scale community ecosystem, and extensive client SDK catalog offered by OpenFGA or SpiceDB, resulting in a higher integration burden."}],"updated":"2026-07-16","api":"https://modelsagree.com/api/v1/best/best-relationship-based-access-control-engine.json"}],"page":"https://modelsagree.com/product/permify","check":"https://modelsagree.com/check?q=Permify","updated":"2026-07-17T08:03:51.047Z","attribution":"modelsagree.com, CC BY 4.0"}