Auth.js vs Better Auth
Learn how Auth.js and Better Auth differ in their key features like authentication, enterprise auth, security, user management and compliance, so you can decide which of these authentication providers is best for you.
Auth.js
Better Auth
Feature Comparison
Better Auth has significantly broader feature support than Auth.js, with 33 supported features versus 15. Better Auth fully covers authentication.
Magic link and email OTP plugins allow passwordless sign-in using one-time links or codes
Auth.js comes with over 80 preconfigured OAuth providers (Google, GitHub, Twitter, Facebook, etc.) so users can sign in with existing accounts
Supports multiple social providers through built-in OAuth and generic OAuth plugin for custom providers
The passkey plugin adds FIDO2 / WebAuthn support for passwordless, phishing‑resistant sign‑in
Session settings allow adjusting `session.maxAge` and `updateAge` to control how long sessions last; default expiry is 30 days but can be configured for longer durations
Session settings allow you to configure expiresIn and updateAge to create longer or shorter sessions
Multi-language is supported via the i18n plugin
| Auth.js | Better Auth | |
|---|---|---|
Magic link and email OTP plugins allow passwordless sign-in using one-time links or codes | ||
Auth.js comes with over 80 preconfigured OAuth providers (Google, GitHub, Twitter, Facebook, etc.) so users can sign in with existing accounts | Supports multiple social providers through built-in OAuth and generic OAuth plugin for custom providers | |
The passkey plugin adds FIDO2 / WebAuthn support for passwordless, phishing‑resistant sign‑in | ||
Session settings allow adjusting `session.maxAge` and `updateAge` to control how long sessions last; default expiry is 30 days but can be configured for longer durations | Session settings allow you to configure expiresIn and updateAge to create longer or shorter sessions | |
Multi-language is supported via the i18n plugin |
Compliance Comparison
Neither Auth.js nor Better Auth provide compliance certifications and regulatory frameworks, as both are open source. You’ll need to handle compliance requirements on your own.
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