Auth0 vs Better Auth
Two sides of the authentication decision: hosted service and library in your app. When each fits, what it costs, who moves from one to the other, and what makers who chose it say.
Which fits you
- You sell to companies whose IT team will ask for SAML SSO or SCIM
Use it whenA customer's security review asks for certifications and identity features a younger provider can't show.
Trade-offHeavier to configure and pricier than newer options for a solo project.
- You want users in your own database and no per-user bill
Use it whenYou'd rather own the code than pay per user.
Trade-offYou host it and keep it patched; UI is yours to build.
At a glance
| Used by | 21 makers' products · 17 open-source projects | 6 makers' products · 94 open-source projects |
|---|---|---|
| Cost at default usagemonthly active users 10k MAU | $0/mo Free | $0/mo Self-hosted (open source) |
| Moved to it on GitHubpull requests since Oct 2024 | fewer than 3 | 4 from Auth0 |
| Downloads | 1.8M/wk−25% vs npm | 6.5M/wk8.4× vs npm |
| Pricing | Free tier; paid plans priced by active users and features. · paid from $35/mo | Free (open source). |
| Free tier | Yes | Yes |
| Open source | No | Yes · self-hostable |
Cost as you grow
Both cost $0 up to 25k MAU; from 50k MAU Better Auth costs less ($0 vs $3,500). They're different kinds of tool — hosted service and library in your app — so the prices don't buy the same thing.
The numbers, plan by plan
| Monthly active users | Auth0 | Better Auth |
|---|---|---|
| 100 | $0 Free | $0 Self-hosted (open source) |
| 1,000 | $0 Free | $0 Self-hosted (open source) |
| 5,000 | $0 Free | $0 Self-hosted (open source) |
| 10,000 | $0 Free | $0 Self-hosted (open source) |
| 25,000 | $0 Free | $0 Self-hosted (open source) |
| 50,000 | $3,500 Essentials | $0 Self-hosted (open source) |
| 100,000 | over plan limits | $0 Self-hosted (open source) |
| 250,000 | over plan limits | $0 Self-hosted (open source) |
| 1,000,000 | over plan limits | $0 Self-hosted (open source) |
From each vendor's pricing page: Auth0, Better Auth.
Who moves from one to the other
Public pull requests on GitHub since Oct 2024 whose title says "Auth0 to Better Auth" or the reverse — real code changes, by developers in general rather than makers only.
- feat(auth): migrate from NextAuth (Auth0) to Better Auths-hirano-ist/s-private · 2026-06-03
- Migration: Auth0 to Better Autheten-tech-foundation/fluent-api · 2026-05-13
- feat(ai-worker): migrate shapes.inc session cookie from Auth0 to Better Authlbds137/tzurot · 2026-04-22
- Refactor auth from Auth0 to Better AuthLes-cabanes-de-la-reynie/Les-cabanes-de-la-reynie · 2025-03-28
What makers say
Makers on using it for authentication, from Product Hunt and Starter Story interviews, each linked to the source. Products with a page of their own and fuller notes first.
A huge thanks to Auth0 for helping us out with the authentication flow. They were really quick with the onboarding process and even with the support tickets.
For handling our user authentication with enterprise-grade security, so our users can log in instantly and focus on their data.
I had a simple login system using Auth0 and it would unlock access to the premium content on the website.
Authentication is always a time sink, but not with better_auth. Simple, secure, and extendable. Got magic links and login flow done in under an hour.
Better-Auth gave us a clean, flexible auth layer with minimal code. Performance, adaptability, and dev-experience were all wins.
It came out of nowhere and became popular for a good reason - it's really good!
Loved and watch-outs
Themes that recur in makers' words and Hacker News comments, each linked to what it summarises.
- A library that keeps users and sessions in your own database, with no vendor dependency and no per-user fees. HNHN 2HN 3HN 4
- Plugins cover OAuth providers, magic links, RBAC, SSO and SAML, going well beyond Auth.js. HNHN 2HN 3PH
- Hackable and transparent, so custom flows such as iframe login work without fighting hidden internals. HNHN 2PH
- Built-in assumptions force hacks, such as OIDC providers without email or request-header-based admin scripts. HNHN 2
- Code quality felt rushed, with few tests and little logging, and audit logs need the managed service. HNHN 2
- Breaking changes appear in patch releases, and the OpenAPI spec gets little care for non-JS clients. HN

