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.

Ask your AI about this, with this page as the source:ChatGPT ↗Claude ↗Perplexity ↗

Which fits you

Choose Auth0 if
  • 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.

Choose Better Auth if
  • 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

Auth0Better Auth
Used by21 makers' products · 17 open-source projects6 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 2024fewer than 34 from Auth0
Downloads1.8M/wk−25% vs npm6.5M/wk8.4× vs npm
PricingFree tier; paid plans priced by active users and features. · paid from $35/moFree (open source).
Free tierYesYes
Open sourceNoYes · 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.

$0$100$500$1,000$2,0001001k5k10k25k50k100k250k1M
Better AuthAuth0x: monthly active users (MAU) · cheapest usable plan at each point, list prices · try your own numbers
The numbers, plan by plan
Monthly active usersAuth0Better 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)
100,000over plan limits$0 Self-hosted (open source)
250,000over plan limits$0 Self-hosted (open source)
1,000,000over 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.

Fewer than 3 pull requests move from Better Auth to Auth0.
Auth0 → Better Auth4 PRs
All matching pull requests on GitHub ↗

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.

On Auth0
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.
SeyftAI, the makerSep 2026 ↗
For handling our user authentication with enterprise-grade security, so our users can log in instantly and focus on their data.
Ada.im, the makerSep 2026 ↗
I had a simple login system using Auth0 and it would unlock access to the premium content on the website.
Tech Lockdown, the makerMay 2024 ↗
10 more on the Auth0 page →
On Better Auth
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.
PicMotionAI, the makerSep 2026 ↗
Better-Auth gave us a clean, flexible auth layer with minimal code. Performance, adaptability, and dev-experience were all wins.
Beplan, the makerSep 2026 ↗
It came out of nowhere and became popular for a good reason - it's really good!
Rybbit, the makerSep 2026 ↗
1 more on the Better Auth page →

Loved and watch-outs

Themes that recur in makers' words and Hacker News comments, each linked to what it summarises.

Auth0
Most loved
  • Enterprise-grade login with SSO and modern standards, so teams avoid rolling their own auth. PHHN
  • Integrates across web and mobile app platforms, with well-regarded docs and responsive onboarding. PH
  • A long track record of reliability that keeps some developers from switching. HNPH
Watch-outs
  • Contracts are expensive with escalating prices and deep vendor lock-in. HNHN 2HN 3
  • Exporting users and password hashes requires a support ticket, which makes migrations painful. HNHN 2HN 3
  • Its hosted login setup has broken password managers. HN
On Product Hunt: 5.0★, 16 reviews · mentioned most: ease of use, quick onboarding, secure access
Better Auth
Most loved
  • 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
Watch-outs
  • 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
On Product Hunt: 5.0★, 5 reviews

Who uses each

What makers pair each with

With Better Auth
ClerkHosted serviceDropping prebuilt sign-in, profile and organization UI into a React or Next.js app.vs Auth0 →vs Better Auth →
SupabaseBundled with your backendApps already on Supabase — auth is part of the same project as the database.vs Auth0 →vs Better Auth →
FirebaseBundled with your backendMobile and client-heavy apps already using Firebase.
WorkOSHosted serviceB2B SaaS that will need enterprise SSO and directory sync.vs Auth0 →vs Better Auth →