Auth0 vs Supabase: Which Auth Platform Should You Use in 2026?

A practical comparison of Auth0 and Supabase Auth covering pricing, features, migration effort, and which one fits small teams vs enterprises.

Updated 2026-09 · 2026

Auth0

Enterprise-grade identity and access management

Free up to 25,000 MAU; Essentials from $35/momonth

Strengths

+Mature protocol support: SAML, OIDC, WS-Federation, LDAP
+Large marketplace of integrations, rules, and Actions
+Built-in anomaly detection, bot protection, and breach detection

Weaknesses

-Costs scale fast once you exceed free-tier MAU limits
-No built-in database or backend — auth only
-Custom logic locked into Auth0-specific Rules/Actions syntax

Best for

Teams needing enterprise SSO, compliance certifications, and identity across many apps

Supabase

Open-source Firebase alternative with Postgres, auth, and storage

Free up to 50,000 MAU; Pro from $25/momonth

Strengths

+Auth bundled with Postgres database, storage, and realtime
+Generous free tier (50k MAU, 500MB DB, 1GB storage)
+Open source and self-hostable — no vendor lock-in

Weaknesses

-Enterprise SSO/SAML support is newer and less polished
-Smaller third-party integration ecosystem than Auth0
-Fewer built-in security features like anomaly detection

Best for

Teams building a product from scratch that want auth bundled with a Postgres backend at low cost

Feature Comparison

Feature	Auth0	Supabase
Free tier MAU limit	25,000	50,000
Social logins	Yes, extensive providers	Yes, major OAuth providers
Enterprise SSO/SAML	Yes, mature	Yes, but newer/limited
MFA	Built-in, advanced options	Built-in, basic TOTP/SMS
Custom domains	Paid tiers only	Included on Pro plan
Database included	No	Yes, Postgres
Row Level Security	N/A	Yes, native Postgres RLS
Self-hosting	No (SaaS only)	Yes, fully open source
Custom logic hooks	Rules/Actions	Edge Functions + DB triggers
Anomaly/bot detection	Yes, built-in	Limited
Pricing model	Per MAU, tiered plans	Flat base + usage overages

The Verdict

Auth0 wins if you need enterprise SSO, compliance certifications, or advanced security features and can absorb per-MAU pricing. Supabase is the better default for small teams and indie builders because auth comes bundled with a real Postgres backend for a fraction of the cost. Unless you specifically need Auth0's enterprise identity stack, Supabase covers 90% of use cases for less money.

How to switch from Auth0 to Supabase

1Export users from Auth0 via Dashboard > User Management > Export Users, which generates a downloadable JSON file of user profiles (password hashes require a separate support ticket for bcrypt export).
2Create a Supabase project and use the Admin API or supabase-js admin client to bulk-import users from the JSON export, mapping email, metadata, and identity fields.
3Handle passwords: since Auth0 hashes aren't portable without a support export, either import the bcrypt hashes directly if obtained, or force a password reset flow for migrated users.
4Recreate social login connections (Google, GitHub, etc.) in Supabase Auth provider settings using the same OAuth client IDs/secrets configured in Auth0.
5Rebuild custom logic from Auth0 Rules/Actions (e.g., adding roles or claims) using Supabase Edge Functions or Postgres triggers tied to auth events.
6Swap SDKs in your app from auth0-js/auth0-react to @supabase/supabase-js, update login and token verification logic, and roll out to a small user segment before full cutover.

Auth0 vs Supabase: common questions

How do I export my users from Auth0 to Supabase?+

Auth0 lets you export users via the Dashboard's User Management > Export Users job, which generates a downloadable JSON file with user profiles and metadata. Password hashes are not included by default — you need to open a support ticket with Auth0 to request a bcrypt hash export, which is only available on paid plans.

What do I lose moving from Auth0 to Supabase?+

You lose Auth0's mature enterprise SSO/SAML wizard, the large Rules/Actions marketplace, and built-in anomaly/bot detection. Supabase covers standard auth flows well but enterprise identity features are less polished and require more manual setup.

Is Supabase's free tier enough for a small team?+

Yes for most MVPs and early-stage products — 50,000 MAU, 500MB database, and 1GB storage cover a lot of ground. Once you need backups, point-in-time recovery, or higher usage, you'll move to the $25/mo Pro plan.

Does Supabase integrate with the same tools as Auth0?+

Supabase Auth supports the major OAuth providers (Google, GitHub, Apple, etc.) and works with standard JWT-based backends. It has a smaller integration marketplace than Auth0, so some niche enterprise identity connectors won't have a direct equivalent.

How does cost compare over time between Auth0 and Supabase?+

Auth0 costs climb quickly once you're past the free MAU limit — Essentials starts at $35/mo for just 500 MAU with per-MAU overages after that. Supabase Pro is a flat $25/mo covering auth, database, and storage together, making it cheaper for small to mid-sized apps over time.