Better Auth
Newer TypeScript-first OSS auth library. Designed as the modern Auth.js alternative.
VISIT BETTER AUTHKey takeaway: For a greenfield TypeScript project that wants to own its user table, Better Auth is the library I would reach for ahead of Auth.js. The API is cleaner, organisations and multi-tenancy are first-class instead of hand-rolled, and the plugin model covers MFA, passkeys and single sign-on without ceremony. Its youth is the only real argument against it.
Quick facts
- CategoryLibrary / OSS
- LanguageTypeScript
- PricingOpen source
- LicenseMIT
- Created2024
- GitHub stars18.4k
- HIPAA-eligibleNo
- SSO / SAMLOut of box
What it is
Better Auth is the 2024 TypeScript-first auth library positioned as the modern alternative to Auth.js. Cleaner API, framework-agnostic, plugin architecture, organisation primitives, multi-tenancy, native MFA. Growing fast in the indie + small-team segment.
Best for
- Greenfield TypeScript projects that want a modern OSS auth library
- Teams comparing against Auth.js and finding the abstractions awkward
- Multi-tenant briefs where Auth.js feels constrained
When not to pick it
Skip Better Auth for very mature production deployments where Auth.js's years of bug-fixes are worth the abstractions. Skip if you need pre-built UI.
My take
Better Auth is the newer, cleaner Auth.js. The API is genuinely better. Younger but the trajectory is strong.
The plugin model and what comes in the box
The core handles sessions, accounts and providers, and everything beyond that arrives as a plugin: organisations with members and invitations, two-factor authentication, passkeys, magic links, single sign-on, API keys, rate limiting, admin capabilities. Because plugins extend both the server and the typed client together, adding one gives you the endpoints, the client methods and the database schema changes in a single step, which is a materially better experience than wiring the same features across callbacks. It is framework-agnostic rather than Next.js-shaped, so the same setup serves an Express or Hono backend, and it works against Postgres, MySQL or SQLite through your existing ORM. The organisation plugin is what decides adoption for a lot of teams. Multi-tenant SaaS is the exact case where Auth.js becomes painful, and having members, roles and invitations modelled properly removes a week of work and a class of bugs.
Betting on a young library for your auth layer
Better Auth is recent, and the reasonable objection is that authentication is the last place you want to be an early adopter. Fair. The counterweights are that adoption has been unusually fast, the maintainers ship frequently, and the library is small enough to read when something confuses you, which is more than can be said for a hosted vendor. The real risk is not a catastrophic bug, it is churn. APIs in young libraries move, and a breaking change in your auth layer is a bad afternoon. Pin versions, read changelogs before upgrading, keep the integration surface thin. If you are running an established production system where Auth.js already works, its years of accumulated fixes are worth something and there is no urgency to switch. Starting today, the cleaner foundation pays back quickly.
Frequently asked questions
Is Better Auth production-ready?
Yes, it is used in production and shipping steadily, but it is young enough that APIs still move. Pin your version, read changelogs before upgrading, and keep the integration surface thin. Because the library runs in your own codebase against your own database, you can read the source when something is unclear, which a hosted vendor never gives you.
Does Better Auth support multi-tenancy?
Yes, and it is one of the main reasons to choose it. The organisation plugin models organisations, members, roles and invitations natively, along with the database schema to support them. That is precisely the shape Auth.js handles awkwardly, so multi-tenant B2B products are where the difference between the two shows up most clearly.
Better Auth or Clerk?
Better Auth when you want the user table in your own database, no per-active-user bill, and you accept building the sign-in and account screens yourself. Clerk when you want those screens finished today and the monthly cost is acceptable. It is the usual trade: engineering time now against a bill that scales with your user count later.
Links
Compare Better Auth side-by-side
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Read the take →If Better Auth is your pick, the next conversation is short
The 30-min call is where your auth choice becomes a real architecture, a migration plan if you are switching, and a price range you can take to your stakeholders. Describe your stack, your scale, your compliance constraints. I tell you whether Better Auth is genuinely your fit.