Auth.js vs SuperTokens: Features, Pricing and User Reviews 2026
Compare features, pricing, reviews, and more to make an informed decision
Auth.js
Auth.js is a free, open-source authentication library for web applications, supporting OAuth, magic links, and credentials across multiple frameworks.
SuperTokens
SuperTokens is an open-source authentication solution offering secure login, session management, and user authentication for modern web and mobile applications.
Auth.js
Auth.js is a free, open-source authentication library for web applications, supporting OAuth, magic links, and credentials across multiple frameworks.
SuperTokens
SuperTokens is an open-source authentication solution offering secure login, session management, and user authentication for modern web and mobile applications.
Auth.js
OAuth 2.0 and OpenID Connect support
80+ pre-configured authentication providers
Magic link email authentication
Username and password credentials
WebAuthn passwordless login
Multiple framework support (Next.js, SvelteKit, Express)
Database adapters for major databases
JWT or database sessions
Built-in security features
Custom page support
TypeScript ready
Open source and free
SuperTokens
Email, social, and passwordless login options
Self-hosted or managed cloud deployment
Session management with automatic token refresh
User management dashboard included
Works with any programming language
Social login for Google, Facebook, GitHub, Apple
Multi-factor authentication add-on available
Role-based access control
Open-source with active community
Free for unlimited users when self-hosted
Auth.js
Auth.js is completely free to use with no pricing tiers or hidden costs. As an open-source project, it is licensed under the ISC license, which allows anyone to use, modify, and distribute the software freely for both personal and commercial projects.
There are no subscription fees, no usage limits, and no charges for any features. All capabilities, including support for unlimited providers, database integrations, and advanced security features, are available at no cost. This makes Auth.js an excellent choice for projects of any size, from small personal websites to large enterprise applications.
The project is maintained by a community of contributors and is now part of Better Auth Inc. Developers can contribute to the project, report issues, and access community support through GitHub discussions completely free of charge.
SuperTokens
SuperTokens offers flexible pricing that works for projects of any size. The core features are completely free when you self-host the service, with no limits on the number of users. This makes it perfect for developers who want full control without ongoing costs.
For those who prefer a managed solution, SuperTokens provides a cloud service that is free for up to 5,000 monthly active users. After that, you pay only $0.02 per monthly active user, making costs predictable as you grow.
Additional features are available as add-ons. Multi-factor authentication costs $0.01 per monthly active user with a $100 monthly minimum. Dashboard users are $20 per user per month, with three free users included. Account linking is available at $0.005 per monthly active user with a $100 monthly minimum. Enterprise features like multi-tenancy, machine-to-machine authentication, and custom support packages are available through custom pricing.
