Auth.js vs Better Auth: 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.
Better Auth
Better Auth is a free, open-source authentication framework for TypeScript that works with any framework and includes everything you need.
Auth.js
Auth.js is a free, open-source authentication library for web applications, supporting OAuth, magic links, and credentials across multiple frameworks.
Better Auth
Better Auth is a free, open-source authentication framework for TypeScript that works with any framework and includes everything you need.
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
Better Auth
Multiple authentication methods including email, social, and passwordless
Framework-agnostic design working with all major frameworks
Two-factor authentication and passkey support
Organization and team management features
50+ social sign-in providers supported
Built-in rate limiting and security features
Open source and completely free
Automatic database management
Type-safe TypeScript implementation
Active community and regular updates
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.
Better Auth
Better Auth is completely free to use with no costs or limitations. As an open-source project released under the MIT License, you can use it in any project including commercial applications without paying anything.
There are no usage limits, user caps, or features locked behind paid tiers. Every feature mentioned in the documentation is available to all users. This includes advanced capabilities like two-factor authentication, organization management, and all authentication methods.
The project is supported by the developer community and backed by Y Combinator. While the core framework remains free, the team behind Better Auth is building optional infrastructure services for scaling, but these are separate from the core library.
You can self-host everything on your own servers with complete control over your user data and no recurring subscription fees.
