Ask five vendors what an AI voice agent costs and you will get five incompatible answers: one per minute, one per call, one per outcome, one a monthly subscription, one “custom”. None of them is lying. They are describing genuinely different commercial models, and comparing the headline numbers directly will lead you to the wrong choice.
The four pricing models, and what each one hides
Per minute. The most common, and the most quietly misleading. A per-minute rate rewards an agent that talks for longer. Two agents on the same rate can differ by a wide margin on identical work simply because one gets to the point. Always ask for average handle time alongside the rate.
Per call. Easier to budget, but check what counts as a call. Does a two-second wrong number bill the same as a four-minute booking? Does a retry on an unanswered number bill again?
Per outcome. The most honest model when it is offered — you pay per booked appointment, qualified lead or recovered payment. It aligns the vendor with your result rather than with airtime. Ask exactly how an outcome is defined, and who adjudicates a disputed one.
Subscription. Predictable, and fine if your volume is steady. The risk is paying a flat fee through a quiet quarter, or blowing past an included-minutes cap in a busy one.
The costs that are almost never in the headline number
- Language-model usage. Most platforms bill this separately. It can be a material share of the total and is easy to miss when comparing per-minute rates.
- Telephony. Numbers, inbound and outbound minutes, and in India your DLT registration, are frequently your cost rather than the vendor’s.
- Integration work. Writing into your CRM properly is a project, not a toggle, whatever the marketing page implies.
- Ongoing tuning. The biggest hidden cost of a self-serve platform is the person who has to run it. Budget those hours, or budget for someone else to do it.
The comparison that actually matters
Not cost per minute. Cost per completed outcome, all-in. Take a real month: how many calls, how many reached the outcome you wanted, and what did everything above add up to? Divide. That single number is comparable across every pricing model, and it is the only one that is.
The baseline worth keeping in view
A full-time receptionist in India costs roughly ₹15,000–25,000 a month, and a telecaller roughly ₹18,000–35,000 plus incentives — for one person, on one shift, in one or two languages, who takes leave and eventually resigns. An agent answers every call at once, around the clock, in every language you have deployed.
So the useful question is not whether the agent is cheap in absolute terms, but what it costs relative to the calls you are currently missing. Most businesses have never measured that second number. It is usually the larger one.