Auth0 vs Stack Auth: Features, Pricing and User Reviews 2026
Compare features, pricing, reviews, and more to make an informed decision
Auth0
Auth0 is a flexible authentication and authorization platform that provides secure user login, single sign-on, and identity management for applications.
Stack Auth
Stack Auth is an open-source authentication platform that handles login, signup, and user management for developers in minutes.
Auth0
Auth0 is a flexible authentication and authorization platform that provides secure user login, single sign-on, and identity management for applications.
Stack Auth
Stack Auth is an open-source authentication platform that handles login, signup, and user management for developers in minutes.
Auth0
Secure authentication for web and mobile apps
Social login with 30+ providers
Multi-factor authentication options
Single sign-on capabilities
Passwordless login methods
Custom branding for login pages
Attack protection and security monitoring
User profile management
Role-based access control
API security
Enterprise directory integration
Real-time security alerts
Detailed activity logs
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
Auth0
Auth0 offers flexible pricing for different business needs with separate plans for consumer-facing applications and business software.
For B2C Applications (Business to Consumer), the Free plan supports up to 25,000 monthly active users with basic features. The Essentials plan costs $35 monthly for 500 users and includes multi-factor authentication and better limits. The Professional plan is $240 monthly for 1,000 users with advanced security features. Enterprise plans offer custom pricing with dedicated support and guaranteed uptime.
For B2B Applications (Business to Business), pricing starts higher. The Free plan includes the same 25,000 users. Essentials costs $150 monthly, Professional is $800 monthly, and Enterprise plans are available with custom pricing. All paid plans can be billed monthly or yearly, with yearly billing offering one month free.
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.