The cost to build an AI voice agent splits into a one-time build and ongoing per-minute run costs. Here is what actually drives each.
A production AI voice agent has two cost buckets: a one-time build and ongoing run costs. A focused build wired into your live systems typically runs in the low-to-mid five figures USD; the drivers are how many call types you automate, how deep the integrations go, and how many languages you support. Run costs are per-minute and stack telephony, speech-to-text, the language model, and text-to-speech, usually landing around a few US cents to low tens of cents per minute at production volume. We scope to a fixed outcome and quote before we start, then give you an honest per-minute estimate at your call volume. No open-ended hourly meter.
The single biggest cost lever is integration depth. An agent that only answers FAQs is cheap; an agent wired into your CRM, scheduling system, and billing to actually resolve calls is where the engineering goes and where the value is.
Run costs scale with usage, not headcount, which is the whole point: at Battery Smart the voice agent handles in-scope calls end-to-end with zero human handoff, so cost per resolved call falls as volume rises instead of climbing with every new hire.
Book a 30-minute call and get a straight answer from the engineer who builds these systems, not a sales rep.