Open Policy Agent (OPA) vs Permit.io
Side-by-side comparison of identity tools. Sponsored placement is disclosed where applicable.
Quick answer
Open Policy Agent (OPA) vs Permit.io: which should you choose?
Short answer
Open Policy Agent (OPA) vs Permit.io have overlapping use cases in identity and access management. The right pick depends on your company size, deployment model, integrations, and pricing tolerance — compare those attributes side-by-side below.
- Best for
- Open Policy Agent (OPA): Platform and security engineering teams that want one policy-as-code engine spanning application authorization, Kubernetes admission, service-mesh and infrastructure checks, and are prepared to operate it themselves. · Permit.io: Engineering teams that need to ship fine-grained authorization across their application and want both programmatic API access and a low-code interface for policy administrators to manage permissions without engineering involvement.
- When to choose
- Pick the option whose company-size fit, deployment model, and integrations most closely match your stack.
- When not to choose
- Skip a head-to-head if you haven't shortlisted a category yet — start with the IAM Stack Finder instead.
- Related tools & categories
- Open Policy Agent (OPA)Permit.ioIAM Stack FinderBuyer resources
| Attribute | ||
|---|---|---|
| Best for | Platform and security engineering teams that want one policy-as-code engine spanning application authorization, Kubernetes admission, service-mesh and infrastructure checks, and are prepared to operate it themselves. | Engineering teams that need to ship fine-grained authorization across their application and want both programmatic API access and a low-code interface for policy administrators to manage permissions without engineering involvement. |
| Short description | Open Policy Agent is an Apache 2.0, CNCF Graduated policy engine that evaluates Rego policies for application authorization, Kubernetes admission (Gatekeeper), Envoy/Istio, Terraform and CI/CD. It returns decisions; your services enforce them. | Permit.io provides authorization-as-a-service with a low-code policy management interface, RBAC/ABAC/ReBAC policy support, and a managed policy decision layer — enabling teams to ship fine-grained access control without building it from scratch. |
| Company size | startup, smb, mid_market, enterprise | Startup, Mid-market, Enterprise |
| Deployment | self_hosted | SaaS / Cloud-hosted |
| Source | open source | Open core (built on OPA/OPAL open standards; management layer is proprietary) |
| Pricing model | free (open source) | MAU and evaluation-based; free tier available |
| Integrations | Kubernetes, Envoy, Istio, Terraform, Kafka, Docker, AWS, Kong | OPA, OPAL, Python, Node.js, Java, Go, REST APIs |
| Categories | Authorization | Authorization |
| Claimed profile |
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