Auth & Backend · side by side
Auth0 vs Lucia
Compare Auth0, Lucia by active-user allowances, social login, MFA, SSO, organizations and audit logs.
Auth & Backend pricing calculator
These providers bill in different units. Each estimate uses its own workload; there is no same-volume price winner.
Auth0
25K
Lucia
1
Auth0
$0 / mo
Free · 25K MAUs
Lucia
Custom / not listed
Custom / unlisted usage pricing · 1 servers
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 | Lucia |
|---|---|---|
| Provider | Okta | Open source |
| Billing unit | MAUs | servers |
| Plan at selected usage | Free | Custom / unlisted usage pricing |
| Monthly estimate | $0/mo | Custom / not listed |
| Workload | 25K MAUs | 1 servers |
| Free access | 25,000 MAUs | Free, open source |
| Published plans | Free, Essentials, Professional, Enterprise | Not listed |
| Prices checked | 2026-10-08 | Not listed |
Provider
- Auth0
- Okta
- Lucia
- Open source
Billing unit
- Auth0
- MAUs
- Lucia
- servers
Plan at selected usage
- Auth0
- Free
- Lucia
- Custom / unlisted usage pricing
Monthly estimate
- Auth0
- $0/mo
- Lucia
- Custom / not listed
Workload
- Auth0
- 25K MAUs
- Lucia
- 1 servers
Free access
- Auth0
- 25,000 MAUs
- Lucia
- Free, open source
Published plans
- Auth0
- Free, Essentials, Professional, Enterprise
- Lucia
- Not listed
Prices checked
- Auth0
- 2026-10-08
- Lucia
- Not listed
Auth & Backend monthly cost
Auth0: $0Lucia: Not priced
Different workloads, separate estimates
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.
Auth & Backend feature comparison
| Auth & Backend | Auth0 | Lucia |
|---|---|---|
| External Active Users | Up to 25,000 | Not listed |
| Machine-to-Machine Authentication | 1,000 | Not listed |
| M2M Add-on | Not listed | |
| Passwordless | Not listed | |
| Social Connections | Unlimited** | Not listed |
| Custom Social Connections | Not listed | |
| Passkeys | Not listed | |
| Auth0 Database Connection | Not listed | |
| Custom Database Connections | Not listed | |
| Cross APP SSO | Not listed | |
| Enterprise Connections | 1 | Not listed |
| Inbound SCIM | Not listed | |
| Okta Connections | Unlimited** | Not listed |
| Express Configuration | Not listed | |
| Organizations | 5 | Not listed |
| Self-Service SSO | Select Enterprise Plans | Not listed |
| Machine-to-Machine Access for Organizations | Select Enterprise Plans | Not listed |
| Home Realm Discovery | Not listed | |
| Long Lived Sessions | Not listed | |
| Custom Token Exchange | Not listed | |
| CIBA | ADD-ON | Not listed |
| Token Vault | 2 | Not listed |
| Auth for MCP | Not listed | |
| Configurable Login Experience | Not listed | |
| Accessibility | Not listed | |
| Custom Domains* | 1 | Not listed |
| Email Workflow | Not listed | |
| Customize Signup & Login | Not listed | |
| Actions + Forms | 5 | Not listed |
| The Actions Library | Not listed | |
| Event Streams | 1 | Not listed |
| Marketplace | Not listed | |
| Pro Forms | Not listed | |
| Brute Force Protection | Not listed | |
| Suspicious IP Throttling | Not listed | |
| Enhanced Password Protection | Not listed | |
| Basic Breached Password Detection | Not listed | |
| Credential Guard | ADD-ON | Not listed |
| Bot Detection | ADD-ON | Not listed |
| Tenant Access Control List (ACL) | 1 + ADD-ON | Not listed |
| Integration with Okta Universal Logout | Not listed | |
| Pro MFA Factors | Not listed | |
| Enterprise MFA Factors | Not listed | |
| Adaptive MFA | ADD-ON | Not listed |
| Security Center | Not listed | |
| Continuous Session Protection | Not listed | |
| FAPI certified Security Profile | ADD-ON | Not listed |
| Compliance Certifications | Not listed | |
| HIPAA/BAA | ADD-ON | Not listed |
| Prioritized Security Log Streams | Not listed | |
| Private Key JWT | Not listed | |
| OIDC Back-Channel Logout | Not listed | |
| User Import | Not listed | |
| Custom Attributes | Not listed | |
| Role Management | Not listed | |
| Account Linking | Not listed | |
| Number of Tenants Included | 1 | Not listed |
| Number of Admin/Contributors | 3 | Not listed |
| Admin Access Controls | Admin | Not listed |
| Auth0 Dashboard SSO | Not listed | |
| Log Retention | 1 Day | Not listed |
| Log Streaming | 1 Log Stream | Not listed |
| Private Deployment | ADD-ON | Not listed |
| SLA | 99.99% | Not listed |
| Community Support | Not listed | |
| Standard Support | Not listed | |
| Premier Support | Premier Success Options | Not listed |
External Active Users
- Auth0
- Up to 25,000
- Lucia
- Not listed
Machine-to-Machine Authentication
- Auth0
- 1,000
- Lucia
- Not listed
M2M Add-on
- Auth0
- Lucia
- Not listed
Passwordless
- Auth0
- Lucia
- Not listed
Social Connections
- Auth0
- Unlimited**
- Lucia
- Not listed
Custom Social Connections
- Auth0
- Lucia
- Not listed
Passkeys
- Auth0
- Lucia
- Not listed
Auth0 Database Connection
- Auth0
- Lucia
- Not listed
Custom Database Connections
- Auth0
- Lucia
- Not listed
Cross APP SSO
- Auth0
- Lucia
- Not listed
Enterprise Connections
- Auth0
- 1
- Lucia
- Not listed
Inbound SCIM
- Auth0
- Lucia
- Not listed
Okta Connections
- Auth0
- Unlimited**
- Lucia
- Not listed
Express Configuration
- Auth0
- Lucia
- Not listed
Organizations
- Auth0
- 5
- Lucia
- Not listed
Self-Service SSO
- Auth0
- Select Enterprise Plans
- Lucia
- Not listed
Machine-to-Machine Access for Organizations
- Auth0
- Select Enterprise Plans
- Lucia
- Not listed
Home Realm Discovery
- Auth0
- Lucia
- Not listed
Long Lived Sessions
- Auth0
- Lucia
- Not listed
Custom Token Exchange
- Auth0
- Lucia
- Not listed
CIBA
- Auth0
- ADD-ON
- Lucia
- Not listed
Token Vault
- Auth0
- 2
- Lucia
- Not listed
Auth for MCP
- Auth0
- Lucia
- Not listed
Configurable Login Experience
- Auth0
- Lucia
- Not listed
Accessibility
- Auth0
- Lucia
- Not listed
Custom Domains*
- Auth0
- 1
- Lucia
- Not listed
Email Workflow
- Auth0
- Lucia
- Not listed
Customize Signup & Login
- Auth0
- Lucia
- Not listed
Actions + Forms
- Auth0
- 5
- Lucia
- Not listed
The Actions Library
- Auth0
- Lucia
- Not listed
Event Streams
- Auth0
- 1
- Lucia
- Not listed
Marketplace
- Auth0
- Lucia
- Not listed
Pro Forms
- Auth0
- Lucia
- Not listed
Brute Force Protection
- Auth0
- Lucia
- Not listed
Suspicious IP Throttling
- Auth0
- Lucia
- Not listed
Enhanced Password Protection
- Auth0
- Lucia
- Not listed
Basic Breached Password Detection
- Auth0
- Lucia
- Not listed
Credential Guard
- Auth0
- ADD-ON
- Lucia
- Not listed
Bot Detection
- Auth0
- ADD-ON
- Lucia
- Not listed
Tenant Access Control List (ACL)
- Auth0
- 1 + ADD-ON
- Lucia
- Not listed
Integration with Okta Universal Logout
- Auth0
- Lucia
- Not listed
Pro MFA Factors
- Auth0
- Lucia
- Not listed
Enterprise MFA Factors
- Auth0
- Lucia
- Not listed
Adaptive MFA
- Auth0
- ADD-ON
- Lucia
- Not listed
Security Center
- Auth0
- Lucia
- Not listed
Continuous Session Protection
- Auth0
- Lucia
- Not listed
FAPI certified Security Profile
- Auth0
- ADD-ON
- Lucia
- Not listed
Compliance Certifications
- Auth0
- Lucia
- Not listed
HIPAA/BAA
- Auth0
- ADD-ON
- Lucia
- Not listed
Prioritized Security Log Streams
- Auth0
- Lucia
- Not listed
Private Key JWT
- Auth0
- Lucia
- Not listed
OIDC Back-Channel Logout
- Auth0
- Lucia
- Not listed
User Import
- Auth0
- Lucia
- Not listed
Custom Attributes
- Auth0
- Lucia
- Not listed
Role Management
- Auth0
- Lucia
- Not listed
Account Linking
- Auth0
- Lucia
- Not listed
Number of Tenants Included
- Auth0
- 1
- Lucia
- Not listed
Number of Admin/Contributors
- Auth0
- 3
- Lucia
- Not listed
Admin Access Controls
- Auth0
- Admin
- Lucia
- Not listed
Auth0 Dashboard SSO
- Auth0
- Lucia
- Not listed
Log Retention
- Auth0
- 1 Day
- Lucia
- Not listed
Log Streaming
- Auth0
- 1 Log Stream
- Lucia
- Not listed
Private Deployment
- Auth0
- ADD-ON
- Lucia
- Not listed
SLA
- Auth0
- 99.99%
- Lucia
- Not listed
Community Support
- Auth0
- Lucia
- Not listed
Standard Support
- Auth0
- Lucia
- Not listed
Premier Support
- Auth0
- Premier Success Options
- Lucia
- Not listed
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Which authentication & backend providers fit your needs?
Auth0 features & plan notes
- Enterprise SSO
- Actions
- 1 Custom Domain*
- Secure Agentic AI workflows
- Passwordless Authentication
- Unlimited Social Connections**
- 5 Organizations
- Brand Customization
- Basic Attack Protection
- Community Support
- 1 Enterprise Connection New
- Self-Service SSO New
- SCIM New
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