Guides
Guides
Practical answers to the billing and cost-control problems teams hit building AI products, each grounded in the turn-accounting specification rather than a sales pitch.
How to charge customers per AI conversation instead of per token
Token counts are what the provider bills you, not what a customer is buying.
Preventing runaway AI costs from a single customer
Postpaid billing finds a runaway loop on the invoice, days later.
Multi-tenant AI billing: why per-customer API keys don't work
A provider key authenticates you to the model vendor, not a customer to you.
What a turn costs: measuring AI agent cost end-to-end
A reported cost-per-interaction figure is usually missing a component.
Every guide on this page cites the same normative source: turn-accounting.