Auth.js vs Stytch: 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.
Stytch
Stytch is a developer-first authentication platform that provides secure, easy-to-use login solutions with built-in fraud prevention for modern applications.
Auth.js
Auth.js is a free, open-source authentication library for web applications, supporting OAuth, magic links, and credentials across multiple frameworks.
Stytch
Stytch is a developer-first authentication platform that provides secure, easy-to-use login solutions with built-in fraud prevention for modern 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
Stytch
Passwordless authentication with magic links and one-time codes
Social login with Google, Facebook, GitHub, and more
Multi-factor authentication for enhanced security
Device fingerprinting and fraud detection
Session management across devices
Single sign-on for business customers
Team and organization management
Pre-built UI components and flexible APIs
Support for web and mobile apps
Real-time security monitoring and analytics
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.
Stytch
Stytch offers flexible pricing designed to grow with your application. The platform provides generous free tiers for both consumer and business authentication.
For Consumer Apps: The free plan includes 10,000 monthly active users and 1,000 machine-to-machine tokens, covering all basic authentication features. This allows startups and small projects to implement secure authentication at no cost.
For B2B SaaS Apps: The free tier includes 10,000 monthly active users, unlimited organizations, 5 SSO or SCIM connections, and 1,000 M2M tokens with full authentication and authorization features.
Fraud Prevention: Available as an enterprise add-on with custom pricing that includes bot detection, device fingerprinting, and advanced security features.
Optional Add-ons: Full email customization and Stytch brand removal available for $99 monthly.
Pricing scales based on monthly active users and additional connections needed.
