---
title: "AuthZed (SpiceDB) vs Casbin — Identity Tool Comparison | IDSync"
url: https://idsync.com/compare/authzed-vs-casbin
description: "Side-by-side comparison of AuthZed (SpiceDB) vs Casbin: best for, pricing, deployment, integrations, and more."
lang: en
---

# AuthZed (SpiceDB) vs Casbin

Side-by-side comparison of identity tools. Sponsored placement is disclosed where applicable.

Last updated today

Quick answer

## AuthZed (SpiceDB) vs Casbin: which should you choose?

Short answer

AuthZed (SpiceDB) vs Casbin 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

AuthZed (SpiceDB): Product engineering teams building fine-grained, relationship-based permissions (sharing, hierarchies, multi-tenant B2B) at scale who want Zanzibar semantics without building them. · Casbin: Backend teams that want to embed a fast, model-driven RBAC/ABAC engine directly inside their own services in Go, Java, Node.js, Python, .NET, PHP or Rust without running a separate authorization server.

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

AuthZed (SpiceDB): https://idsync.com/directory/authzed
Casbin: https://idsync.com/directory/casbin
IAM Stack Finder: https://idsync.com/stack-finder
Buyer resources: https://idsync.com/resources

| Attribute | AuthZed (SpiceDB): https://idsync.com/directory/authzed | Casbin: https://idsync.com/directory/casbin |
| --- | --- | --- |
| Best for | Product engineering teams building fine-grained, relationship-based permissions (sharing, hierarchies, multi-tenant B2B) at scale who want Zanzibar semantics without building them. | Backend teams that want to embed a fast, model-driven RBAC/ABAC engine directly inside their own services in Go, Java, Node.js, Python, .NET, PHP or Rust without running a separate authorization server. |
| Short description | Maker of SpiceDB, the Apache-2.0 "open source permissions database" inspired by Google Zanzibar, offered self-hosted, as usage-priced AuthZed Cloud, as Dedicated cloud, or as a licensed self-hosted enterprise build. | Casbin is an Apache 2.0 open-source authorization library, embedded in-process, that evaluates ACL, RBAC, ABAC and other models defined in a model.conf file against policy rules loaded from CSV or a database adapter. It entered the Apache Incubator in February 2026. |
| Company size | startup, smb, mid_market, enterprise | startup, smb, mid_market, enterprise |
| Deployment | saas, self_hosted | self_hosted |
| Source | open core | open source |
| Pricing model | usage-based / enterprise | free (open source) |
| Integrations | PostgreSQL, CockroachDB, Google Cloud Spanner, MySQL, Kubernetes, gRPC, Go, Node.js | Go, Java, Node.js, Python, .NET, PHP, Rust, C++ |
| Categories | Authorization | Authorization |
| Claimed profile | | |

Buyer help

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### Buyer's guides & checklists

RFP templates, migration checklists, and rollout playbooks.
https://idsync.com/resources

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