Best Auth Identity · head-to-head
Auth0 vs Clerk
A sourced, side-by-side comparison for auth identity. Auth0 has the lower entry price. Every figure links to the vendor's own page and the date we captured it.
At a glance
- Price: Auth0 $0/mo vs Clerk $0/mo — Auth0 is cheaper to start.
- Free tier: Auth0 Yes; Clerk Yes.
- HIPAA: Auth0 Yes; Clerk No.
Side by side
| Auth0 | Clerk | |
|---|---|---|
| Entry price | $0/mo (Free) | $0/mo (Hobby) |
| Free tier | Yes | Yes |
| HIPAA (BAA) | Yes | No |
| SOC 2 | Yes | Yes |
| GDPR | Yes | Yes |
| Best for | B2B SaaS needing enterprise SSO fast | React / Next.js teams wanting plug-and-play auth |
Sources — Auth0: auth0.com (verified 2026-06-14). Clerk: clerk.com (verified 2026-06-14).
Key features
Auth0: Universal Login with no-code Forms editor; Adaptive MFA and attack protection; Serverless Actions for identity customization; Machine-to-machine (M2M) auth; Highly Regulated Identity for sensitive industries
Clerk: Drop-in React UI components with full customization; Prebuilt device session management; MRU-based billing (not just MAU — counts returning users); All Pro features available in dev instances before committing; SAML/OIDC enterprise connections on Pro+