Better Auth vs Clerk
Pricing
Better Auth: Free and open source (MIT); optional managed dashboard from $20/mo
Clerk: Free up to 10k MAU, from $25/mo
Description
Better Auth: Open-source TypeScript authentication framework that runs inside your app and stores users in your own database
Clerk: Drop-in auth with pre-built UI components: sign-up, sign-in, and user management in minutes
Pros
- Free under the MIT licence; you pay only if you want the optional managed dashboard
- Works across frameworks and lets you bring your own database
- Plugins add OAuth providers and security features such as rate limiting, bot detection and breached-password checks
- Pre-built React components for auth that actually look good out of the box
- 10,000 monthly active users free: most startups run free for months
- Handles the hard stuff: MFA, social login, organization management
Cons
- Built for TypeScript projects only
- It runs inside your own app, so updates and security patches are your job, unlike hosted services such as Clerk or Auth0
- The free Starter dashboard keeps audit logs for one day and caps them at 10,000 a month
- Vendor lock-in is real: migrating away from Clerk means rebuilding auth
- Pricing jumps at scale (10k+ MAU) can surprise you
- React-focused, less polished for non-React stacks
Details
Better Auth is a library, not a hosted service. You install it in your TypeScript app, point it at your own database, and it handles sign-in and OAuth providers, with plugins for the extras. Your users stay in your database, and the framework itself costs nothing.
It suits developer founders who want to own their auth without writing it from scratch. The team also took over Auth.js (formerly NextAuth.js), and Better Auth’s site announces that it is joining Vercel.
The paid part is an optional managed dashboard with audit logs, security detections, transactional email and SMS, and single sign-on. Starter is free with one seat; Pro is $20/month plus usage.
Clerk gives you a complete auth system without building one. Install the package, drop in the sign-up component, and you have Google login, email/password, MFA, and user profiles working. The UI components look professional without any styling work.
The 10,000 MAU free tier is genuinely generous: most early startups will not outgrow it for months. The concern is lock-in: once your app is wired to Clerk’s components and APIs, moving to something else is a significant rewrite. If you are validating an idea and need auth fast, Clerk is the fastest path. If you are building something you expect to maintain for years, consider whether the convenience is worth the dependency.
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