Auth & Backend · side by side
Auth0 vs Clerk
Compare Auth0, Clerk by active-user allowances, social login, MFA, SSO, organizations and audit logs.
Auth & Backend pricing calculator
25K
Auth0
$0 / mo
Free · 25K MAUs
Clerk
$325 / mo
Pro · 25K MAUs
Listed USD plan fees and tracked usage only. Unlisted compute, transfer, extras, taxes and contract terms are excluded. Custom or unsupported plan usage is not estimated.
Auth & Backend overview & pricing
| Auth & Backend | Auth0 | Clerk |
|---|---|---|
| Provider | Okta | Clerk |
| Billing unit | MAUs | MAUs |
| Plan at selected usage | Free | Pro |
| Monthly estimate | $0/mo | $325/mo |
| Workload | 25K MAUs | 25K MAUs |
| Free access | 25,000 MAUs | 10,000 MAUs |
| Published plans | Free, B2C Essentials, B2C Professional, Enterprise | Free, Pro, Enterprise |
| Prices checked | Not listed | Not listed |
Provider
- Auth0
- Okta
- Clerk
- Clerk
Billing unit
- Auth0
- MAUs
- Clerk
- MAUs
Plan at selected usage
- Auth0
- Free
- Clerk
- Pro
Monthly estimate
- Auth0
- $0/mo
- Clerk
- $325/mo
Workload
- Auth0
- 25K MAUs
- Clerk
- 25K MAUs
Free access
- Auth0
- 25,000 MAUs
- Clerk
- 10,000 MAUs
Published plans
- Auth0
- Free, B2C Essentials, B2C Professional, Enterprise
- Clerk
- Free, Pro, Enterprise
Prices checked
- Auth0
- Not listed
- Clerk
- Not listed
Auth & Backend monthly cost
Auth0: $0Clerk: $325
Cost by MAUs
Cost curve data
| MAUs | Auth0 | Clerk |
|---|---|---|
| 0 | $0 | $0 |
| 6,250 | $0 | $0 |
| 12.5K | $0 | $75 |
| 25K | $0 | $325 |
| 50K | $3,500 | $825 |
| 125K | $8,750 | $2,325 |
| 250K | $17,500 | $4,825 |
0
- Auth0
- $0
- Clerk
- $0
6,250
- Auth0
- $0
- Clerk
- $0
12.5K
- Auth0
- $0
- Clerk
- $75
25K
- Auth0
- $0
- Clerk
- $325
50K
- Auth0
- $3,500
- Clerk
- $825
125K
- Auth0
- $8,750
- Clerk
- $2,325
250K
- Auth0
- $17,500
- Clerk
- $4,825
Auth & Backend feature comparison
| Auth & Backend | Auth0 | Clerk |
|---|---|---|
| Monthly active users | 25,000 MAUs | 10K incl., then $0.02 |
| Social login | Unlimited social | Unlimited social |
| MFA / passkeys | Basic | MFA + passkeys |
| Enterprise SSO (SAML) | $75/mo add-on | |
| Organizations / B2B | Up to 5 orgs | Orgs add-on |
| Branding & custom domain | Custom domain | Remove branding |
| Audit logs | 1-day logs | Full |
| Support | Community |
Monthly active users
- Auth0
- 25,000 MAUs
- Clerk
- 10K incl., then $0.02
Social login
- Auth0
- Unlimited social
- Clerk
- Unlimited social
MFA / passkeys
- Auth0
- Basic
- Clerk
- MFA + passkeys
Enterprise SSO (SAML)
- Auth0
- Clerk
- $75/mo add-on
Organizations / B2B
- Auth0
- Up to 5 orgs
- Clerk
- Orgs add-on
Branding & custom domain
- Auth0
- Custom domain
- Clerk
- Remove branding
Audit logs
- Auth0
- 1-day logs
- Clerk
- Full
Support
- Auth0
- Community
- Clerk
Which authentication & backend providers fit your needs?
How to compare authentication & backend providers
Check how each provider defines an active user and separates consumer identity from enterprise organizations. SAML, MFA, custom domains and audit logs can be gated behind higher plans. A backend platform can also charge separately for storage, functions and traffic.
Browse Auth & Backend pricing