The short answer
An AI receptionist is worth it if the calls you miss cost you jobs, and if it gets back more than it costs. It is not worth it if you rarely miss a call, or if your calls are the kind a script cannot handle.
That is a numbers question, and you can answer it yourself in an afternoon. This page shows how. If you want the background on what an AI receptionist is and how it differs from a human service, read AI receptionist vs answering service vs voicemail. The phone part is one piece of a wider AI assistant that also covers chat, texts and email.
Does an AI receptionist work?
It works for a short list of jobs, and it is worth knowing which ones.
It does well:
- Answering every call, at any hour, with the same greeting.
- Answering questions that have a fixed answer: hours, service area, whether you do a type of job, how to book.
- Collecting a name, phone number, address and the reason for the call.
- Booking a time on a calendar it can see.
- Sending you a short summary so you can call back the right people first.
It does poorly:
- A caller who is angry, grieving or frightened.
- A job that needs a custom answer or a price you quote on the spot.
- Two questions in one sentence, heavy accents or a noisy job site on the caller’s end.
- Anything where the caller must talk to a specific person.
The fix for the second list is not a better AI. It is a clear handoff: the assistant says it is an AI assistant and the caller can reach a person or leave a message. If a vendor cannot show you how the handoff works, do not buy.
The math: what a missed call costs you
You need four numbers. Most owners have never counted them, and a rough count is enough.
- How many calls you miss in a month. Look at your phone’s missed-call list, or count for two weeks and double it.
- How many of those are new customers, not suppliers, spam or existing clients who will call back.
- How many of those you would have booked if someone had answered. Use a cautious guess, such as one in three.
- What a booked job earns you in gross profit, not revenue.
Multiply 2 by 3 by 4. That is what missed calls cost you each month. Compare it with the plan price.
A worked example (for illustration)
These are round numbers to show the method. They are not market data and not a result from a client.
A plumbing business gets 120 calls a month. The owner is on jobs and misses a quarter of them: 30 calls. About half of those are new customers asking for work: 15 calls. With a quick answer and a booking, one in three would have turned into a job: 5 jobs. Each job averages $350 in revenue and about $140 in gross profit.
| Step | Number |
|---|---|
| Missed calls a month | 30 |
| New customers among them | 15 |
| Jobs recovered (1 in 3) | 5 |
| Gross profit per job | $140 |
| Gross profit recovered a month | $700 |
Now compare it with the cost. An AI phone assistant from us is from $299/month (about 300 minutes), and published self-serve plans from other vendors run from $29 to $349 a month. At $700 recovered, the plan pays for itself with room to spare. If only one job a month came back, that is $140, and a plan above that does not pay.
Change the numbers to yours. If the answer is a few hundred dollars a month more than the plan, it is worth testing. If it is close to zero, it is not.
Two things the example leaves out. Your time to review summaries and fix wrong answers is a cost. And a recovered caller is not just one job: a good first call can mean repeat work and referrals, which the arithmetic above ignores.
AI receptionist vs hiring a person
The common alternative is a part-time or full-time employee. The US Bureau of Labor Statistics reports a median pay of $38,010 a year, or $18.27 an hour, for receptionists in May 2025. That is wages only. Payroll taxes, benefits, training and coverage for breaks and sick days are extra.
A person also works a fixed number of hours. A 40-hour week covers about a quarter of the 168 hours in a week, so evenings, weekends and lunch still go to voicemail.
A human answering service sits between the two. Ruby lists 100 minutes a month for $395 and 200 minutes for $720. An AI plan covering similar minutes is often a fraction of that: Dialzara lists 220 minutes for $99, and Rosie lists 250 minutes for $49. The cost gap is real. So is the quality gap on difficult calls.
When to keep a person
Keep a person on the phone, or at least the first option on the call, when:
- The front desk is part of the service. A spa, a clinic with walk-ins or a restaurant host does more than answer the phone.
- Calls are long and sensitive. Intake for a lawyer or an injury case, a medical question, a bereavement, a complaint.
- You get very few calls. The byVoice guide, written by a company that sells AI receptionists, says AI is a poor fit under about 10 calls a month. Its reasoning is that the fixed costs are not worth it at that volume.
- Callers are your relationships. If most calls come from regular clients who expect to reach you, a script will feel cold.
- A mistake is expensive. Quoting prices, giving legal or medical advice, or promising a time you cannot keep.
For clinics and law firms there is a further rule. The assistant can book and take messages, but staff handle clinical and legal questions. For clinics, a name tied to an appointment request already counts as patient information under HIPAA, so the phone, AI and texting vendors need to sign a business associate agreement before the assistant takes bookings. A law firm’s assistant does intake only and gives no legal advice. This is not legal advice.
A cautious way to start
You do not have to choose between “all AI” and “all person”. A start that costs little:
- Count your missed calls for two weeks. Use the four numbers above.
- Start with after-hours and overflow only. The AI picks up when you do not.
- Approve every answer it can give. Hours, area, services, what you will not quote by phone.
- Write the handoff rule. Which calls go straight to you, and how.
- Test it as a customer. Call it, ask the five questions customers ask most and try to book.
- Review the call summaries weekly for a month, fix wrong answers, then decide.
We run this the same way. Our assistant answers from a list you approve, says it is an AI assistant, and gives callers a person or a message option. If you want to see the options for your calls, AI receptionist and phone answering explains the setup, and our pricing guide shows how plans are priced. Setup is from $900.
Not included in our prices: third-party software subscriptions (billed at cost), SMS carrier registration (A2P 10DLC) and message fees, and AI usage above the plan allowance.
How to choose between AI receptionist products
When you compare vendors, check these in order:
- What it answers from. Facts you approved, or its own guesses.
- What happens at handoff. A real person, a voicemail or a dead end.
- What you get after each call. Name, number, reason and summary, delivered where you will see them.
- What it connects to. Your calendar, booking tool or CRM.
- How billing works. Per minute, per call or per customer, and what overage costs.
- Whether you can cancel monthly after a trial period.
If you want a done-for-you build, CallReply is our AI phone agent. If you want to set one up yourself, PhoneAnswer is our self-serve option. Or ask for a free demo and we will tell you honestly whether your call volume justifies it.
Published . Updated .