DialCompare
Menu

Buying guide

AI receptionist pricing: per call, per minute or per caller

How the three common AI receptionist pricing models work, how to estimate a typical and a busy month, and the add-on, rounding and commitment questions to settle before you sign up.

DialCompare editorial · Published

Two AI receptionists can look the same on a pricing page and cost very different amounts once your real calls arrive. The headline monthly price is the smallest part of the decision. What matters is the unit the vendor counts, how much of that unit is included, what an extra unit costs, and which calls never count at all. This guide explains the three pricing models we see across the vendors in our shortlist and gives you a simple way to estimate a normal month and a busy one. Current prices and allowances live on the comparison table, and each provider profile links the source page and observation date behind them, so this guide deliberately avoids quoting them.

Three ways vendors count usage

Per call. Each answered call uses one unit from a monthly bucket, and each call beyond the bucket is billed at a flat extra rate. This model is easy to predict when your calls are long: on a flat per-call rate a fifteen-minute intake costs the same as a thirty-second question, provided the plan has no duration cap, fair-use limit or separate transfer charge, which you should confirm on the pricing page. It is less forgiving when many calls are short. Check what does not count: some vendors filter known spam before the receptionist answers and let you strike a share of remaining spam from the bill (Smith.ai), while others say blocked spam, telemarketing and robocalls never count (Upfirst). Ask whether a transferred call, a voicemail or a caller who hangs up after two seconds uses a unit, because most pages do not say.

Per minute. Talk time is metered against a bucket of included minutes, and extra minutes are billed at a per-minute rate. This model rewards short, efficient calls and punishes long ones. Two details change the bill more than the rate itself. The first is rounding: one vendor in our shortlist rounds every call up to the next 30 seconds (RingCentral), which adds up when most calls are brief. The second is how overage is sold. Some vendors bill extra minutes at a rate that falls as the plan grows (Dialzara); another sells overage as prepaid credits with a monthly pool, an auto-reload purchase and different expiry rules for included and purchased credits (Frontdesk). Credits are fine, but you have to do the arithmetic to see the per-minute price.

Per unique caller. One vendor counts distinct phone numbers that actually speak to the agent in a month, with repeat calls from the same number counted once and silent or robocall traffic excluded (Goodcall). Minutes are not metered. This suits businesses whose regulars call several times a month or whose calls run long. Read the definition of “interacts” carefully, and note that this vendor prices per agent, so a second location adds a subscription only if it needs its own agent.

Estimate a typical month and a busy month

You do not need call analytics to make a useful estimate. Pull four numbers from your phone bill or from a week of tally marks at the front desk:

  1. Calls answered in a normal month, and in your busiest month.
  2. Total talk minutes for the month if your phone bill shows them, or the average length of a call plus a guess at how many calls run past five minutes.
  3. How many distinct phone numbers those calls came from, or a count of repeat calls.
  4. How many calls were spam, wrong numbers or instant hang-ups.

Then translate the busy month into each unit and compare it with the plan bucket you are considering. The extra usage above the bucket, multiplied by the overage rate on the comparison table, is the part of the bill that surprises people.

Hypothetical example, made-up inputs. Suppose a two-chair dental practice answers 300 calls in January, its busiest month. For the example only, assume that 30 of them are spam or instant hang-ups the vendor excludes, leaving 270 billable calls; that those 270 calls came from 180 distinct phone numbers, so 90 were repeat calls; and that the phone bill shows 675 talk minutes for the month.

  • On a per-call plan the month is 270 billable calls, so a 300-call bucket fits and a 90-call bucket is mostly overage.
  • On a per-minute plan the month is 675 talk minutes before rounding. Rounding each call up to the next 30 seconds adds an amount that depends on every call’s length, so plan with a buffer: budgeting 750 minutes is a planning choice, not a calculated bill. A 500-minute bucket would leave a couple of hundred minutes of overage either way.
  • On a per-unique-caller plan the 90 repeat calls cost nothing, so the month is 180 distinct callers, and the long January calls add nothing extra.

None of those figures is a price, and the exclusions are assumptions for the example; each vendor’s own spam, hang-up and transfer rules decide what counts. The figures show how the same practice lands in a different place on each model, which is why we list included usage and overage side by side rather than ranking vendors by monthly fee. Run the numbers for your own normal and busy months before you look at the plan names.

Add-ons, rounding and commitment checklist

Work through this list against the vendor’s pricing page, then confirm anything unclear with the vendor before you forward your number.

  • Does the entry plan answer calls at all? One shortlist vendor’s lowest plan includes no voice minutes and is an evaluation plan for its chat and CRM features (Frontdesk).
  • Is a phone number included, or do you forward? Some plans include a local or toll-free number (Dialzara); others assign their own number and recommend conditional forwarding from your existing line (Goodcall).
  • Rounding and minimums. Ask for the billing increment and whether there is a minimum charge per call.
  • What is excluded. Spam, hang-ups, test calls and simulated calls are treated differently by every vendor; the exclusions decide how much of your bucket is real.
  • Overage mechanics. Flat rate, prepaid credits or bundles; whether unused allowance rolls over; whether auto-reload is on by default and what a reload costs.
  • Monthly or annual. Annual billing often carries a discount in the range of 15 to 20 percent on the pages we reviewed, in exchange for a year of commitment. Month-to-month plans can still carry a notice period; one vendor asks for 30 days (Smith.ai).
  • Per agent, per location or per business. Per-agent pricing multiplies with each location or department that needs its own receptionist.
  • Separate products. SMS agents, website chat and outbound calling are often priced as add-ons; an add-on receptionist may also require the vendor’s phone plan, billed separately (RingCentral).
  • Trial terms. Length, whether real calls are allowed during the trial, and whether a card is required. One vendor offers two weeks with real calls and no card (Upfirst).

What to do next

Open the comparison table with your busy-month numbers beside it, then read the provider profiles for the limitations that do not fit in a table. Before you commit, run the scenarios in our guide on how to test an AI receptionist. Our comparison method explains where every figure on this site comes from and what we have not verified.

Sources