OpenFGA review 2026: fine-grained authorization features, Zanzibar-inspired architecture, SDKs, self-hosting, pricing, and how it compares to other tools.
Category
Security
Pricing
Open Source, from Free
Verified
Not yet
Last updated
July 19, 2026
Founded
2022
Headquarters
San Francisco, California, United States (originating sponsor: Okta/Auth0)
API
Overview
OpenFGA is a free, open-source fine-grained authorization engine that lets developers implement scalable, relationship-based permission systems inspired by Google's Zanzibar paper. It was originally designed and built by Auth0, later acquired by Okta, and donated to the Cloud Native Computing Foundation in September 2022.
The project has since advanced from CNCF Sandbox to CNCF Incubating status, and is jointly maintained by engineers from Okta and Grafana Labs under an open governance model with a public RFC process for community contributions.
Key Features
OpenFGA supports relationship-based access control (ReBAC) in the style of Google Zanzibar, while also handling role-based (RBAC) and attribute-based (ABAC) authorization patterns within a single modeling language, so teams do not need separate systems for simple and complex permission logic.
It is designed for high performance, answering authorization check calls in milliseconds at scale, and ships with SDKs for languages and frameworks like Python, Java, Spring, and Next.js, along with integrations for identity providers and infrastructure tools such as OPA, Envoy, and Kong.
Pricing
OpenFGA is fully open source and free to self-host, with no license fee for the core authorization engine, governed transparently under the Cloud Native Computing Foundation.
Teams that prefer a fully managed service can use Auth0 FGA, Okta's hosted commercial version built on OpenFGA, rather than self-hosting the open-source server.
Key Features
Relationship-based access control (ReBAC) — Implements Zanzibar-style relationship-based permission models for complex, nested authorization scenarios.
Combined RBAC and ABAC support — Handles role-based and attribute-based authorization patterns within the same modeling language as ReBAC.
Purpose-built modeling language — A dedicated authorization modeling language that is expressive enough for engineers but readable enough for other stakeholders.
Low-latency authorization checks — Designed to answer permission check calls in milliseconds, even at large scale.
Multi-language SDKs — Official SDKs are available for languages and frameworks including Python, Java, Spring, and Next.js.
Identity and infrastructure integrations — Integrates with identity providers such as Auth0, Okta, and Azure AD, and infrastructure tools like OPA, Envoy, and Kong.
Open governance under CNCF — Governed transparently as a CNCF Incubating project with a public RFC process for community-driven development.
Pros & Cons
Pros
Fully open source and free with no licensing cost for the core engine
Backed by Okta and Grafana Labs engineers under transparent CNCF governance
Handles ReBAC, RBAC, and ABAC authorization patterns in a single unified system
Built for low-latency performance at scale, following Google's proven Zanzibar model
Broad SDK and integration support across popular languages and identity providers
Cons
Requires engineering effort to design and self-host an authorization model correctly
Steeper learning curve than simple built-in framework authorization for teams new to ReBAC concepts
No official first-party managed OpenFGA hosting outside of Okta's separate Auth0 FGA product
Smaller ecosystem than long-established authorization libraries baked into specific frameworks
As an infrastructure component, it adds an additional service to operate and monitor in production
Pricing
Open Source (Self-Hosted) Free N/A
Frequently Asked Questions
Is OpenFGA free to use?
Yes, OpenFGA is fully open source and free to self-host; Okta also offers a separate managed commercial version called Auth0 FGA.
Who created OpenFGA?
OpenFGA was designed and built by Auth0, later acquired by Okta, and donated to the Cloud Native Computing Foundation in September 2022.
What is the Zanzibar paper, and how does it relate to OpenFGA?
Zanzibar is Google's published system for global, low-latency authorization; OpenFGA takes the core relationship-based access control ideas from that paper and implements them as an open-source system.
Does OpenFGA support role-based access control (RBAC)?
Yes, in addition to relationship-based access control, OpenFGA can also model role-based and attribute-based access control patterns.
What is OpenFGA's status within the CNCF?
OpenFGA is a CNCF Incubating project, having advanced from the CNCF Sandbox after its 2022 donation by Auth0/Okta.
Which companies use OpenFGA?
Publicly known users include Grafana, Docker, and Canonical, among other organizations building complex permission systems.
What programming languages does OpenFGA support?
OpenFGA provides official SDKs for languages and frameworks including Python, Java, Spring, and Next.js, with additional community SDKs available.