Earlier quoted context omitted.
Bifrost is the only real alternative I'm aware of https://github.com/maximhq/bifrost
Virtual Keys is an Enterprise feature. I am not going to pay for something like this in order to provide my family access to all my models. I can do without cost control (although it would be nice) but I need for users to be able to generate a key and us this key to access all the models I provide.
Please do a double take on the facts, you might falsely deter people.