Hi @mahitej , welcome to Auth0!
Most customers are limited to 50 separate tenants unless approved by support, but the number of tenants with paid features may be different and it is agreement-specific. (That’s why it’s best to contact the support with this question).
A good information is that multi-tenants multi-organizations architecture is supported - Multi-Tenant Applications Best Practices.
This feature (programmatic creation of tenants) is, unfortunately, currently unsupported.
But there is a product feature request for that in the community and you are welcome to give it +1. - Create Tenants via Management API - #2 by rueben.tiow
Please let us know any questions!