Technology comparison
Clerk vs Better Auth: managed convenience vs owning your stack
Both handle auth well. The real difference is whether you want to write a check every month or own the SQL.
2026-07-01
My migration experience from Auth.js to Better Auth: - Clerk: Tried for 1 month, very convenient, but worried about long-term vendor lock-in - Better Auth: Currently used in my 3 projects, completely free and I control the data Clerk can indeed handle Auth in minutes. But for long-term projects, having user data in someone else's system makes me uneasy. Better Auth's SQL-first approach fits my philosophy better. Below, I'll analyze the trade-offs in detail.
TL;DR
- Pick Clerk for zero auth work + pre-built UIs.
- Pick Better Auth to own your users' data with no vendor lock-in.
| Dimension | Clerk | Better Auth |
|---|---|---|
| Pricing | $25+/mo + per MAU | Free (MIT) |
| Own the data | No | Yes |
| UI components | Pre-built | BYO or starter templates |
| SSO / SAML | Paid tiers | Plugin |
| Time to auth | Minutes | 1–2 hours |
| Vendor lock-in | High | None |
Cost curve
Clerk is cheap under 10K MAU, expensive past 100K MAU.
Better Auth is free at any scale — you pay for your database + infra only.
Data ownership
With Clerk, your users live in Clerk's system. Migrating away is possible but non-trivial.
With Better Auth, users are rows in your database.
Where TanStack Ship fits
TanStack Ship uses a Better Auth-based approach — users live in your D1/Postgres database, no vendor lock-in, no per-MAU pricing. If you want the Clerk convenience without the long-term cost, TanStack Ship's auth setup is 1-command and Better Auth-powered.
Frequently asked questions
Which is cheaper?
Better Auth — free.
Which is faster to set up?
Clerk — minutes.
Which for enterprise SSO?
Clerk on paid tiers; Better Auth via SSO plugin.
Which owns my user data?
Better Auth — data lives in your DB.
Can I migrate off Clerk later?
Yes, but not trivial. Plan ahead.
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