WorkOS AuthKit
Enterprise-grade auth platform with social login, MFA, passkeys, RBAC, and SSO — free for up to 1M monthly active users.
Use Cases
Free Tier
1M MAU, social auth, MFA, passkeys, RBAC, organization management
How to Maximize the Free Tier
WorkOS AuthKit's 1M MAU free tier is the most generous auth offering available — you're unlikely to hit the cap for any realistic project. Enable social auth (Google, Microsoft) and MFA immediately; both are included free. Use RBAC for permission management without building your own role system. The catch: SSO and Directory Sync connections cost $125/each starting from the first one — these are NOT free. Stick to social auth and password-based login for the free tier; only add SSO when enterprise customers specifically require it and you're ready to pay.
Getting Started
Sign up at workos.com → create an application → install the WorkOS SDK for your framework → configure AuthKit with your Client ID and API key → enable social providers in the dashboard → add the AuthKit sign-in component to your app → configure organization settings for multi-tenancy → test in staging (free) before production.
Pros
- 1M MAU free: The most generous free tier among hosted auth providers — 100x Clerk, 143x Auth0, 20x Logto
- Enterprise features: RBAC, organization management, and passkeys included free — features competitors gate behind paid plans
- Production-ready: Used by major SaaS companies — battle-tested auth infrastructure with SOC 2 compliance
Cons
- SSO costs extra: SSO and Directory Sync connections are $125 each — NOT included in the free tier despite being a core feature
- Custom domain expensive: Custom domain for hosted login pages costs $99/month — a steep price for branding control
- Overkill for simple apps: Enterprise-focused architecture adds complexity for apps that just need basic email/password login