AI receptionists are sold on four incompatible billing units — per minute, per call, per unique caller, and per credit — so the advertised prices tell you almost nothing. We priced the same 100-call month across four vendors and got $79, $114, $149 and $915. Same work. Twelve times the spread.
The cheapest plan on paper is rarely the cheapest plan for your call pattern, because each unit rewards a different kind of business. Long calls from repeat customers and short calls from strangers land in completely different places on the same price list.
Key takeaways
- Four vendors, four billing units. Rosie bills minutes, Smith.ai bills calls, Goodcall bills unique callers, Frontdesk bills credits.
- Your call length and caller repeat rate decide the winner — not the headline price.
- Goodcall’s unique-caller model is the outlier: unlimited minutes, so long calls are free.
- Rosie does not publish an overage rate on its three main plans, which makes a busy month unbudgetable.
- Smith.ai costs 8–12× the pure-AI options because real people answer — it is a different product, not a worse deal.
What Do AI Receptionists Actually Cost?
Entry prices run from $20 to $300 a month, but they buy wildly different amounts of work. Here is what each vendor publishes, read off their own pricing pages on 11 August 2026.
| Vendor | Billing unit | Entry plan | Mid plan | Overage published? |
|---|---|---|---|---|
| Rosie | Minute | $49 · 250 min | $149 · 1,000 min | No |
| Frontdesk | Credit (1¢) | $20 · chat only | $99 · 200 voice min | Yes — 25 credits/min |
| Goodcall | Unique caller | $79 · 100 callers | $129 · 250 callers | Yes — $0.50/caller |
| Smith.ai | Call | $300 · 30 calls | $810 · 90 calls | Yes — $8.50–11.50/call |
Read that middle column again. No two of these vendors count the same thing. A price comparison that ignores the unit is arithmetic on incompatible quantities.
What Does the Same Month Cost on Each?
Take a realistic small-business month: 100 inbound calls, averaging three minutes, from roughly 70 distinct phone numbers. A dental practice, a plumber, a small law firm. Now price it four times.
| Vendor | How the bill is built | Month total |
|---|---|---|
| Goodcall | Starter covers 100 unique callers; 70 used; minutes unlimited | $79 |
| Frontdesk | $99 plan covers 200 min; 100 min over = 2,500 credits, 1,000 included, 1,500 billed at 1¢ | $114 |
| Rosie | 300 min needed; 250-min plan is short and overage is unpublished, so step up to 1,000 min | $149 |
| Smith.ai | $810 covers 90 calls; 10 more at $10.50 | $915 |
Among the three pure-AI options the spread is $79 to $149, which is narrower than the headline prices suggest ($20 to $79 entry). The cheap-looking $20 plan doesn’t do voice. The $49 plan can’t cover the month without an overage rate nobody will quote you.
Which Billing Unit Suits Your Business?
Match the unit to whichever variable is largest and least predictable in your business. If calls are long, don’t buy minutes. If callers repeat constantly, buy unique callers. The unit is a bet on your own traffic shape.
| If your calls are… | Cheapest unit | Why |
|---|---|---|
| Long (5 min+), few callers | Unique caller | Minutes are free, so length costs nothing |
| Short (under 90s), many callers | Minute or credit | You’re billed for the little time you use |
| From the same regulars weekly | Unique caller | One customer calling ten times bills once |
| Mostly new enquiries | Minute or credit | Every caller is unique, so caller-based pricing is worst-case |
| High-value, low-volume | Call, with humans | A missed conversion costs more than the call fee |
| Spiky and unpredictable | Whichever publishes overage | An unpublished rate is an uncapped bill |
This is the same reasoning we apply to workflow platforms in Zapier vs Make vs n8n, where a task, a credit and an execution are also three different things wearing one label. The pattern repeats across every AI category: the unit is the product.
Why Does an Unpublished Overage Rate Matter So Much?
Because the whole point of a receptionist is handling the calls you didn’t plan for. A quiet month is easy to budget. The month your ad works, or a pipe bursts across town, is the month the bill decides whether the tool was worth it.
Rosie publishes an overage rate for its $50 texting add-on — $1 per extra conversation — but not for the three voice plans. So the only safe way to buy is to size up to the next tier and overpay in normal months. That is a real cost, and it is created by the missing number rather than by the price.
Goodcall takes the opposite position and states it directly: no charge for calls, minutes or tokens, with a flat $0.50 per unique caller past the plan limit. Whatever you think of the price, you can forecast it. We flagged the same divide among agent platforms in no-code AI agent builders, where several vendors sell credits without defining one.
Is an AI Receptionist Cheaper Than a Person?
For pure call answering, yes, by a wide margin — a receptionist salary is a five-figure annual commitment and the AI options above are three-figure ones. But that comparison flatters the AI, because the jobs are not the same job.
A human receptionist signs for deliveries, calms an angry customer, notices the regular who sounds unwell, and exercises judgement about who gets put through to you at 4:55pm. An AI receptionist answers, qualifies, books and routes. Where that is the job, the savings are real. Where it isn’t, you are comparing a tool to a colleague.
The honest framing is the one we use in AI vs hiring: automate the part that is genuinely procedural, and be clear-eyed that what’s left over is often the part that mattered. For most small businesses the realistic win is not replacing a receptionist — it’s answering the 30% of calls currently going to voicemail.
What Should You Check Before Signing Up?
Four questions, and the vendors that answer all four cleanly are the ones worth shortlisting.
| Question | Why it decides the cost |
|---|---|
| What exactly consumes one unit? | Ringing time, hold time and voicemail may or may not bill |
| What is the overage rate? | No published rate means you must buy a tier up |
| Does it bill the caller or the call? | Decides whether repeat customers are cheap or expensive |
| Can it transfer to a human mid-call? | Without this, every edge case becomes a lost customer |
What Does an AI Receptionist Handle Well — and Badly?
Voice AI in 2026 is reliable at structured, bounded exchanges: taking a name and number, answering opening hours, checking a calendar, booking a slot, routing to the right person. It is unreliable the moment a call goes sideways — accents under background noise, someone talking over it, or a caller who opens with three questions at once.
That matters for cost because every failed call is a customer you paid to lose. A $79 plan that mishandles your ten highest-value enquiries is more expensive than a $915 one that doesn’t. The pricing table only tells you what you spend, never what you forfeit.
| Call type | Handles it? | What to configure |
|---|---|---|
| Opening hours, location, parking | Reliably | Nothing — this is the base case |
| Take a message with callback details | Reliably | Confirm the number back to the caller |
| Book into a calendar | Usually | Buffer times and a double-booking guard |
| Qualify a new enquiry | Usually | A short fixed script; stop at three questions |
| Angry or distressed caller | Poorly | Escalation keyword that transfers immediately |
| Complex quote or negotiation | Poorly | Route straight to a person, don’t attempt |
Test it yourself before you launch it on customers. Call your own line from a mobile, outdoors, and interrupt it mid-sentence. Then call and ask something slightly off-script. Two minutes of that tells you more than any vendor demo, and it is the same shadow-testing discipline we recommend before trusting any agent in AI agents for business.
Frequently Asked Questions
How much does an AI receptionist cost per month?
Pure-AI services run roughly $49 to $150 a month for a typical small-business call volume. We priced a 100-call month at $79 on Goodcall, $114 on Frontdesk and $149 on Rosie. Human-staffed hybrids like Smith.ai are far higher, around $915 for the same volume.
Is AI receptionist pricing per call or per minute?
It depends entirely on the vendor, and that is the main thing to check. Rosie bills per minute, Smith.ai per call, Goodcall per unique caller per month, and Frontdesk in credits worth one cent each, with voice at 25 credits per minute.
What is the cheapest AI receptionist?
Cheapest depends on your call shape. For long calls from repeat customers, a unique-caller plan like Goodcall’s $79 tier wins because minutes are unlimited. For short calls from new enquirers, per-minute or credit billing usually costs less.
Do AI receptionists charge for overage?
Most do. Goodcall charges $0.50 per unique caller beyond the plan limit and Frontdesk charges 25 credits per voice minute. Rosie does not publish an overage rate for its three main voice plans, so a busy month cannot be budgeted in advance.
Can an AI receptionist transfer calls to a person?
The established services support live transfer and escalation rules, and it is worth confirming before signing. Without a clean handoff every unusual call becomes a lost one, which erases the saving on the calls it did handle.
Will an AI receptionist replace my receptionist?
It replaces the procedural part — answering, qualifying, booking and routing. It does not replace judgement, in-person tasks or relationship handling. Most small businesses get better value using one to catch missed and after-hours calls than to remove a role.
The Bottom Line
Pull your call logs before you pull out a card. Average call length and the number of distinct callers are the only two figures that decide which pricing model treats you kindly, and both are sitting in your phone system right now.
Then apply one filter that costs nothing: throw out any vendor that won’t tell you what happens when you exceed the plan. In a category built for handling unpredictable volume, an unpublished overage rate is not an oversight — it’s the risk being moved onto you.
If you’re weighing this against a broader automation budget, start with the honest tool comparison, then check what else is competing for the same money in our comparisons hub.
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Sources
All prices read off each vendor’s own pricing page on 11 August 2026. Where a vendor does not publish an overage rate, that is reported as a finding rather than estimated. The worked scenario is our own arithmetic using those published rates; your bill depends on your call pattern. Pricing in this category moves quickly — check the vendor page before committing.
