Infrastructure economics
Clerk Pricing in 2026: What You Actually Pay Per User
Clerk's Free plan covers 50,000 monthly retained users (MRU) in 2026, so most side projects and early-stage SaaS pay $0. Pro is $25/month with 50,000 MRU included, then $0.02 per user in the 50,001 to 100,000 band. The bill that surprises teams is not per-user overage; it is the feature add-ons, B2B Auth at $100/month, Administration at $100/month, and extra Enterprise SSO connections at $75/month each. Clerk also bills retained users, not signups, so anyone who does not return 24 hours after signing up costs nothing.
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