# Clerk vs Auth0

Canonical: https://inetgeek.com/compare/clerk-vs-auth0/

Every value below is read from Clerk's and Auth0's own documentation. See https://inetgeek.com/methodology/ for how.

## At a glance

| Criterion | Clerk | Auth0 |
| --- | --- | --- |
| Free tier | Yes | Yes |
| Entry paid plan | $25/month for Pro, or $20/month billed annually. Business is $300/month. | $35/month for Essentials at 500 monthly active users; Professional is $240/month at the same volume. Both scale with the MAU slider. |
| Pricing model | A monthly base price plus per-user billing above the included 50,000, with enterprise connections, extra dashboard seats and satellite domains each priced as separate add-ons at $75, $20 and $10 a month. | Per monthly active user, chosen on a slider, with a discontinuity that is easy to miss: the free plan covers 25,000 MAU and includes an enterprise connection, SSO and SCIM, while the paid tiers start at 500 MAU and a footnote says keeping those three features requires upgrading to B2B. |
| Users included | 50,000 monthly retained users per app, on the free Hobby plan and on Pro alike. Beyond that, $0.02 each falling to $0.012 above 10 million. | 25,000 monthly active users on the free plan — the largest free allowance here apart from WorkOS. Essentials and Professional start at 500 and are priced upward from there. |
| SAML single sign-on | Supported | Supported |
| Multi-factor authentication | Supported | Supported |
| Audit logs | Application logs with 1-day retention on the free Hobby plan; longer retention is a paid-plan feature Clerk lists without publishing the window. | Audit log streaming to Datadog, Splunk, AWS and Azure, from the Essentials plan up. Auth0 publishes no retention window on the pricing page. |

## Where they differ

### Entry paid plan

- Clerk: $25/month for Pro, or $20/month billed annually. Business is $300/month. ([source](https://clerk.com/pricing))
- Auth0: $35/month for Essentials at 500 monthly active users; Professional is $240/month at the same volume. Both scale with the MAU slider. ([source](https://auth0.com/pricing))

### Pricing model

- Clerk: A monthly base price plus per-user billing above the included 50,000, with enterprise connections, extra dashboard seats and satellite domains each priced as separate add-ons at $75, $20 and $10 a month. ([source](https://clerk.com/pricing))
- Auth0: Per monthly active user, chosen on a slider, with a discontinuity that is easy to miss: the free plan covers 25,000 MAU and includes an enterprise connection, SSO and SCIM, while the paid tiers start at 500 MAU and a footnote says keeping those three features requires upgrading to B2B. ([source](https://auth0.com/pricing))

### Users included

- Clerk: 50,000 monthly retained users per app, on the free Hobby plan and on Pro alike. Beyond that, $0.02 each falling to $0.012 above 10 million. ([source](https://clerk.com/pricing))
- Auth0: 25,000 monthly active users on the free plan — the largest free allowance here apart from WorkOS. Essentials and Professional start at 500 and are priced upward from there. ([source](https://auth0.com/pricing))

### Audit logs

- Clerk: Application logs with 1-day retention on the free Hobby plan; longer retention is a paid-plan feature Clerk lists without publishing the window. ([source](https://clerk.com/pricing))
- Auth0: Audit log streaming to Datadog, Splunk, AWS and Azure, from the Essentials plan up. Auth0 publishes no retention window on the pricing page. ([source](https://auth0.com/pricing))

## Which should you choose?

Pick Clerk if Getting a complete, styled sign-in flow running quickly, with 50,000 users free before any bill starts.

Pick Auth0 if Projects that fit inside the free 25,000 monthly active users, which includes an enterprise connection, self-service SSO and SCIM at no cost.

Consider something else: Clerk — Enterprise connections are $75/month each after the first, so a B2B product selling to several SSO-using customers pays per logo.

Consider something else: Auth0 — Leaving the free plan is a cliff rather than a step: paid tiers begin at 500 MAU, and a footnote says enterprise connections, SSO and SCIM need a B2B upgrade to keep.

## Documented by only one

- Price per SSO connection: Clerk: One enterprise connection included on Pro, then $75/month each.
- SCIM provisioning: Auth0: Supported

## Questions this comparison answers

**Entry paid plan: Clerk or Auth0?**

Clerk: $25/month for Pro, or $20/month billed annually. Business is $300/month.
Auth0: $35/month for Essentials at 500 monthly active users; Professional is $240/month at the same volume. Both scale with the MAU slider.

**Should I choose Clerk or Auth0?**

Pick Clerk if Getting a complete, styled sign-in flow running quickly, with 50,000 users free before any bill starts.
Pick Auth0 if Projects that fit inside the free 25,000 monthly active users, which includes an enterprise connection, self-service SSO and SCIM at no cost.