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Auth0 vs Supabase

Two sides of the authentication decision: hosted service and bundled with your backend. When each fits, what it costs, who moves from one to the other, and what makers who chose it say.

Auth0Hosted servicellms.txtMCP
SupabaseBundled with your backendllms.txtMCPCLIIn Bolt, Lovable, v0
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 Supabase if
  • Your data is already in Supabase or Firebase

Use it whenYou want row-level security in Postgres tied directly to the signed-in user.

Trade-offLess polished UI components than dedicated auth services.

At a glance

Auth0Supabase
Used by21 makers' products · 17 open-source projects13 makers' products
Cost at default usagemonthly active users 10k MAU$0/mo Free$0/mo Free
Moved to it on GitHubpull requests since Oct 20244 from Supabase6 from Auth0
Downloads1.8M/wk−25% vs npm25.4M/wk+96% vs npm
PricingFree tier; paid plans priced by active users and features. · paid from $35/moFree tier (inactive projects pause); paid plans per project plus usage. · paid from $25/mo
Free tierYesYes
Open sourceNoYes · self-hostable
Incidents, 90 daysfrom its status pageno public status feed50+ (16 major)

Cost as you grow

Both cost $0 up to 25k MAU; from 50k MAU Supabase costs less ($0 vs $3,500). They're different kinds of tool — hosted service and bundled with your backend — so the prices don't buy the same thing.

$0$100$500$1,000$2,0001001k5k10k25k50k100k250k1M
SupabaseAuth0x: monthly active users (MAU) · cheapest usable plan at each point, list prices · try your own numbers
The numbers, plan by plan
Monthly active usersAuth0Supabase
100$0 Free$0 Free
1,000$0 Free$0 Free
5,000$0 Free$0 Free
10,000$0 Free$0 Free
25,000$0 Free$0 Free
50,000$3,500 Essentials$0 Free
100,000over plan limits$25 Pro
250,000over plan limits$513 Pro
1,000,000over plan limits$2,950 Pro

From each vendor's pricing page: Auth0, Supabase.

Who moves from one to the other

Public pull requests on GitHub since Oct 2024 whose title says "Auth0 to Supabase" or the reverse — real code changes, by developers in general rather than makers only.

Supabase → Auth04 PRs
All matching pull requests on GitHub ↗
Auth0 → Supabase6 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 Supabase
Our real-time database and auth backbone. Supabase’s hosted PostgreSQL and Edge Functions give us version control, user management, and lightning-fast reads/writes out of the box.
Snapdeck, the makerSep 2026 ↗
Supabase is CatDoes' backend. We use their database, auth, storage, and real-time features. A platform like CatDoes requires a stable and scalable backend, and Supabase is providing that!
CatDoes, the makerSep 2026 ↗
Supabase makes backend work a breeze with instant APIs and real-time sync. We skip building auth and complex DB setups, letting us launch features faster and focus on what really matters.
Lamatic.ai, the makerSep 2026 ↗
10 more on the Supabase 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
Supabase
Most loved
  • One project covers Postgres, auth, storage and realtime, so a solo founder ships without stitching vendors or hiring a backend team. PHPH 2PH 3PH 4
  • It is real Postgres with SQL, row-level security and pgvector rather than a proprietary store. PHPH 2PH 3PH 4
  • Open source and self-hostable, which reduces vendor lock-in. PHPH 2HNPH 3
Watch-outs
  • Row-level security policies are hard to get right, so many apps end up exposing data publicly. HNHN 2HN 3HN 4
  • Reliability has been shaky for some, and it is not really built for self-hosting in practice. HN
  • Per-project billing adds up for developers running many small side projects. HN
On Product Hunt: 5.0★, 899 reviews · mentioned most: authentication features, easy setup, PostgreSQL integration · complaints: documentation gaps

Who uses each

Auth021 makers' products
Ada.imBrokeeChronicleClawTeamsDGiEddyOwlEnhance-dMaildroppaPassionfrootSeyftAITech LockdownWaydev+9 more
Supabase13 makers' products
BeforeSunset AICatDoesgiselleGretaLamatic.aiNot DiamondSlashySnapdeckVC BoomZivyDodo PaymentsHelicone+1 more

What makers pair each with

With Auth0
Hosting
Frontend Framework
Payments
Transactional Email
With Supabase
Frontend Framework
Transactional Email
Hosting
LLM API

Neither quite right?

See the whole authentication decision →
ClerkHosted serviceDropping prebuilt sign-in, profile and organization UI into a React or Next.js app.vs Auth0 →vs Supabase →
FirebaseBundled with your backendMobile and client-heavy apps already using Firebase.vs Supabase →
Better AuthLibrary in your appTypeScript apps that want users and sessions in their own database, at no cost.vs Auth0 →vs Supabase →
WorkOSHosted serviceB2B SaaS that will need enterprise SSO and directory sync.vs Auth0 →vs Supabase →