Authentik vs Stack Auth: Features, Pricing and User Reviews 2026
Compare features, pricing, reviews, and more to make an informed decision
Authentik
Authentik is an open-source identity provider that offers secure single sign-on and access control for modern applications.
Stack Auth
Stack Auth is an open-source authentication platform that handles login, signup, and user management for developers in minutes.
Authentik
Authentik is an open-source identity provider that offers secure single sign-on and access control for modern applications.
Stack Auth
Stack Auth is an open-source authentication platform that handles login, signup, and user management for developers in minutes.
Authentik
Multiple protocol support (OAuth, SAML, LDAP, RADIUS)
Self-hosted and open source
Multi-factor authentication options
Social login integration
Customizable authentication flows
Web-based remote access (SSH, RDP, VNC)
Fine-grained access policies
Visual admin dashboard
API and automation support
Docker and Kubernetes deployment
Enhanced audit logging (Professional)
Enterprise integrations available
Stack Auth
Password, OAuth, and magic link authentication
Two-factor authentication and passkeys
Team and organization management
Role-based permissions and access control
Pre-built React components and UI
User impersonation for support
Webhooks and real-time notifications
Custom email templates
REST API for integrations
Open-source and self-hostable
Next.js, React, JavaScript support
Admin dashboard for user management
Authentik
Authentik offers three pricing tiers to match different needs:
Open Source (Free): Perfect for homelab users and simple setups. Includes all core authentication protocols, web-based remote access, support for both business and consumer use cases, and community Discord support. No cost and no limits on users.
Professional ($5/user/month): Adds enterprise functionality with enhanced audit logging for compliance, Google Workspace and Microsoft Entra ID integration, external OAuth and SAML source embedding, Chrome Enterprise Device Trust connector, and password history compliance checks. External users cost only $0.02 per month. Service accounts are free. Includes ticket-based support for subscriptions over $1,000. Billed annually.
Enterprise ($20,000+ annual): Designed for large organizations needing custom contracts. Includes everything in Professional plus dedicated customized support, volume discounts for thousands of users, and FIPS compliance for federal requirements.
Stack Auth
Stack Auth offers transparent pricing that scales with your needs. The Free plan is perfect for individuals and small projects, supporting up to 10,000 users with unlimited projects and teams. You get one dashboard administrator and access to all core authentication features.
The Team plan costs $49 per month and increases your user limit to 50,000 users. It includes three dashboard administrators, with additional admins available at $49 each. This plan is ideal for early startups and small teams building their products.
The Growth plan at $299 per month removes all user limits entirely. You get unlimited users, projects, and teams, along with five dashboard administrators included. Additional admins cost $49 each. This plan is designed for growing businesses that need to scale without worrying about user count restrictions.
All plans include the same core features, with the main differences being user limits and admin accounts.