Auth0 Free plan with up to 25,000 monthly active users

Auth0 currently lists a Free authentication plan at $0 per month with no credit card needed to sign up. The official pricing page says the plan supports up to 25,000 monthly active users and includes passwordless authentication, unlimited social connections subject to system limits, five Organizations, basic attack protection, community support, and one Enterprise Connection. Auth0 also lists one custom domain on Free, but the pricing page notes that credit-card verification is required for custom domains, so that optional feature has an extra verification condition even though ordinary Free-plan signup does not require a card. Auth0 states that new accounts can begin with a 22-day trial and then automatically move to the Free plan unless a paid plan is selected. Use the official pricing page to confirm current limits before relying on a specific production feature.