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Drop-in authentication and user management for modern apps.
Clerk is an authentication and user management platform designed to give developers a complete, beautiful auth experience with minimal work. Its signature is prebuilt, customizable UI components — sign-in, sign-up, user profile, and organization switcher — that drop into modern frontend frameworks, so instead of building and styling auth screens yourself, you add a component and get production-ready login, complete with social sign-in, multi-factor authentication, and session management.
Built for the modern stack, Clerk is especially popular with React and Next.js developers and integrates deeply with today's frameworks. Beyond sign-in, it handles user profiles, multi-session and device management, organizations and roles for B2B apps, and, increasingly, enterprise features like SAML/SSO. It bills on active users with a generous free tier and no charge for many features other providers gate, which — combined with its developer experience — made it a fast-rising alternative to older identity providers.
Clerk suits startups and developers building modern web and mobile apps who want polished auth shipped quickly, and B2B SaaS teams needing organizations and SSO. Pricing has a free tier plus Pro (with per-active-user costs) and add-ons, so cost scales with your active users and the enterprise features you enable.
Pricing Model
By active users, per month
Starting Price
$25/mo
Free Options
Free version, Free trial
Generous free tier (10,000+ active users) with full core auth.
From ~$25/month; includes free tier then ~$0.02 per additional user.
B2B Auth ~$100/mo, Administration ~$100/mo, extra SSO ~$75/connection.
Business from ~$300/month; Enterprise custom annual quote.
| Feature | Free Popular | Pro | Add-ons | Business / Enterprise |
|---|---|---|---|---|
| 10,000+ monthly active users | — | — | — | |
| Prebuilt UI components | — | — | — | |
| Social & password sign-in | — | — | — | |
| MFA & user management | — | — | — | |
| No credit card required | — | — | — | |
| Removes Clerk branding | — | — | — | |
| Custom domains | — | — | — | |
| ~$0.02 per user beyond free | — | — | — | |
| Enterprise SSO available | — | — | — | |
| Advanced sessions | — | — | — | |
| B2B organizations add-on | — | — | — | |
| Advanced administration | — | — | — | |
| Enterprise SSO connections | — | — | — | |
| Flexible bundling | — | — | — | |
| Pay for what you need | — | — | — | |
| Higher limits & support | — | — | — | |
| Advanced security | — | — | — | |
| SLA & compliance | — | — | — | |
| Priority support | — | — | — | |
| Custom terms | — | — | — |
Other
Finance
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API Types
SDK Availability
Verify SDK availability in vendor's documentation.
Developer Features
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Compliance Standards
SOC 2 Type II
EnterpriseISO 27001
EnterpriseGDPR Compliant
GlobalHIPAA
HealthcarePCI DSS
FinanceCCPA
PrivacyFedRAMP
GovernmentCSA STAR
CloudDeployment & Data
Data Residency Options
Verify with vendor for your specific region requirements.
Authentication and authorization as a service for developers.
Enterprise-ready auth: SSO, SCIM, and user management APIs.
Developer-first authentication, passwordless, and fraud prevention.
User management and authentication built for B2B SaaS.
Quick comparisons
