Auth.js vs Logto: 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.
Logto
Logto is an open-source authentication platform that helps developers build secure sign-in experiences with multi-tenancy, SSO, and role-based access control.
Auth.js
Auth.js is a free, open-source authentication library for web applications, supporting OAuth, magic links, and credentials across multiple frameworks.
Logto
Logto is an open-source authentication platform that helps developers build secure sign-in experiences with multi-tenancy, SSO, and role-based access control.
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
Logto
Multiple sign-in methods (password, email, SMS, social)
Enterprise SSO with SAML and OIDC
Multi-factor authentication for security
Role-based access control and permissions
Multi-tenancy for serving multiple organizations
API protection and machine-to-machine auth
Customizable sign-in interface and branding
Audit logs and user management
Open-source with cloud or self-hosted options
SDKs for 30+ frameworks and languages
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.
Logto
Logto offers flexible pricing to fit different needs and budgets. The platform uses a token-based pricing model that's more affordable than competitors charging per user.
Free Plan: Start with up to 50,000 monthly active users at no cost. You get 50,000 tokens included, user authentication, machine-to-machine apps, audit logs, and basic features. Perfect for getting started and small projects.
Pro Plan ($24/month): Unlock advanced features including role-based access control, organizations for multi-tenancy, multi-factor authentication, enterprise SSO with SAML and OIDC, and third-party app integrations. You get 50,000 tokens included, then pay $0.08 per 100 extra tokens. Additional machine-to-machine apps cost $8 each, SAML apps cost $96 each, and API resources cost $4 each.
Enterprise Plan: Custom pricing for large teams with specific requirements. Includes custom data regions, dedicated computing resources, service-level agreements, premium support, and migration assistance.
Unlike competitors that charge per user, Logto's token-based pricing means unlimited monthly active users on the Pro plan, making it more cost-effective as your user base grows.