# Clerk vs Supabase Auth for Next.js

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

| | Clerk | Supabase Auth |
| --- | --- | --- |
| What it is | Hosted authentication: Clerk's sign-in, sign-up and account settings, restyled with your design's tokens in light and dark, with Google, GitHub and Microsoft switched on from the Clerk dashboard. With a database selected, a Svix-signed webhook mirrors users into your own tables. | 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 Hobby plan up to 50,000 monthly retained users per app. Pro is $25/month, or $20/month billed yearly, then $0.02 per extra user. MFA needs Pro. Pro includes one enterprise SSO connection. | 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 finished auth UI and Clerk's hosted user dashboard on day one, with organisations there when they need them. The trade: the user record lives in Clerk's database. With a database selected, a webhook keeps a copy in yours. | 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 Clerk](https://agenticboilerplate.com/build?b=clerk)
- [Build with Supabase Auth](https://agenticboilerplate.com/build?b=supabase-auth)

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