>Economy sure but not money necessary. Economy does not mean money.

Money is a useful abstraction for value. How many chickens to a television, and televisions to the beach house is a hard problem.

If you have resource tokens, its basically the same thing. The right to requisition x food resources and y labor resources, and z land resources. Anything fungible which replaces direct barter ends up being similar.

If humans are to still exist, they'll have to be part of the equation in terms of directing the AI. Like, who decides what the AI spends its discretionary time on? If the AI doesn't have its own motivation and interests, or otherwise just allocates resources to human requests, that can be a kind of money in and of itself. Start off giving everyone an equal share of AI requests, and the requests which generate the most positive feedback from the community yields more time to the person or group who made the request, and people can trade AI time share just like money.

I personally like the resource allocation model. It's basically money, only it ties value to quantifiable things. That's only viable when you have highly mechanized everything where the energy and time costs are highly predictable, like a society mostly by AI.