C 
Clerk
Drop-in authentication and user management with prebuilt components.
NOT REALLY
why this verdict
Keep paying — Anthropic has not replaced it
Anthropic's version overlaps, but does not finish the security job, so this one still earns its $25/mo.
- A named launch, not a vibe named, unlinked
- AI codegen will happily write insecure auth from scratch. Anthropic, January 1, 2025 — no announcement link recorded yet.
- How much of the job it covers not the job editorial call
- Parts of it. The job still needs the tool to get finished.
- Is there a free way to do it? yes
- 2 of 3 listed replacements have a usable free tier: Better Auth and Auth0.
- What the call is worth $300/yr
- $25/mo at the entry paid tier — $300 a year per seat.
Reason composed from the fields above missing: announcement linked recorded: free replacement listed recorded: two or more escape hatches
- Threatened by
- Anthropic
- Since
- January 1, 2025
- List price
- $25/mo
- Per year
- $300
The backstory
Auth is the classic case where letting a model roll its own is a bad idea, and Clerk's pitch is that you should never do that. It ships the sign-in UI, session handling, organisations and MFA as components, which is also why every AI app scaffolder wires it up by default.
Escape hatches
B 
Better Auth Open source, own your data.
better-auth.com open_in_new A 
Auth0 Enterprise incumbent.
auth0.com open_in_new W 
WorkOS Better for SSO and SCIM.
workos.com open_in_new2 of 3 replacements have a usable free tier.