AI voice agent billing breaks the moment you try to apply traditional SaaS billing logic to a service that meters by the second and triggers telecom tax obligations. This decision-stage buyer's guide walks MSPs and telecom resellers through the three dominant AI voice agent pricing models, the FCC and USAC compliance exposure that kicks in once your agents touch the PSTN, and the six platform criteria that separate a real billing solution from a Stripe integration with extra steps. It also breaks down a worked pricing example showing why headline per-minute rates rarely match what an end customer actually pays. Built for resellers who need to package, bill, tax, and report on AI voice as a regulated telecom service from day one.