# Better Auth vs Supabase Auth for Next.js

Both are sign in batteries. A repo takes one of them, not both.

| | Better Auth | Supabase Auth |
| --- | --- | --- |
| What it is | Self-hosted, TypeScript-native authentication that lives in your own database. Email and password, magic links, and Google, GitHub and Microsoft sign-in (each on when its keys are set), with sign-up, password reset, account settings, a role column the admin panel can trust, and server-side session helpers with no vendor session service in the request path. | Cookie-based Supabase Auth for the Next.js App Router: sign-in with Google, GitHub and Microsoft buttons for whichever providers your Supabase project has switched on, email and password, magic links, password reset, and profile and security settings. It ships @supabase/ssr clients, session refresh in the proxy and RLS-aware query helpers, and the shared getSessionUser, requireUser and requireRole surface is backed by app_metadata.role. |
| Pricing | Free and open source (MIT). You pay only for your own Postgres and the sign-in emails you send. Google, GitHub and Microsoft sign-in are free. | Free: 50,000 monthly active users. Pro: 100,000 included, then $0.00325 per MAU. Anonymous sign-ins are included. SAML SSO needs Pro: 50 SSO users included, then $0.015 each. |
| Best for | Teams who want the user table in their own database, joinable with their own data. No per-MAU bill and no third-party outage in the login path. | Teams already on Supabase Postgres who want row-level security as the authorization model. With the policies right, a buggy query cannot return another tenant's rows. |

- [Build with Better Auth](https://agenticboilerplate.com/build?b=better-auth)
- [Build with Supabase Auth](https://agenticboilerplate.com/build?b=supabase-auth)

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