The best AI receptionist for small business, tested on three questions

The first test: can it see your calendar

This is the line that splits the category and it is almost never the headline claim. An AI receptionist that answers, captures a name and emails you a transcript has built a nicer voicemail. Genuinely useful, and not a receptionist.

The question to ask is precise: does it read the capacity remaining in a specific window and create the appointment during the call, or does it collect a booking request and hand it to somebody in my business? Vendors are careful with the wording here, so ask it twice. Rosie is the clearest published example of the gap: its $49 tier sends the caller an appointment link by text, and writing to your calendar starts at $149. OnCallClerk, Goodcall, Vandial and Smith.ai's Calendly scheduling put booking on the entry tier.

The second test: are your prices configuration or recall

If your call-out fee lives in a prompt that the model is trusted to remember, it will eventually quote something else. If it lives in a setting the agent reads, it cannot.

The practical version of this question is: can I change my price at eight in the evening and have the next call quote the new one? Dialzara sells a self-editable prompt on every tier and paid prompt engineering on the $199 tier and up, which tells you which side of this line it sits on. Where the answer involves a support ticket, you are a customer of a service rather than an operator of a product, and you will feel that difference every week.

The third test: what it says when it does not know

Ask it to diagnose a fault. Ask what a repair will cost. Ask whether a named person is a client. Every one of those has a correct answer and the correct answer is a refusal with a reason and a next step.

A vendor demo will not show you this, which is exactly why it is the most informative sixty seconds available to you. A confident wrong answer, given to your customer, in your business's name, is the entire risk of this purchase.

SkipCalls, Upfirst, Dialzara, OnCallClerk: the bottom of the market, and what the price buys

Four vendors now publish entries under $30 a month. SkipCalls is $19.99, or $199 a year, with unlimited minutes and no overage published. Upfirst is $24.95 for 30 calls and $1.50 a call after. Dialzara is $29 for 60 minutes at $0.48 a minute over, with warm transfer to your team gated to the $99 tier. OnCallClerk starts at $29 with calendar booking and call transfers included, and full-feature plans from $99 to $299.

These are real prices from real pricing pages and for a business with a few calls a day they are the right place to start. Two things to check before choosing on price alone. First, the meter: 60 minutes is about twenty calls, and a per-minute overage of $0.48 turns a busy month into a $60 one quickly. Second, what the entry tier withholds: warm transfer at Dialzara, calendar booking at Rosie, scenario limits at several. The cheapest tier is often a message-taker, and a message-taker is what you already have.

Rosie and Phonely: two honest mid-market options

Rosie publishes $49 for 250 minutes, $149 for 1,000 with calendar booking, warm and live transfers and mid-call texting, and $299 for 2,000 with unlimited message scenarios and a specialist to onboard you. It trains from your Google profile and website, answers in English and Spanish on every plan, and has native iOS and Android apps, which almost nobody else on this list does. The overage rate is not on the pricing page, so ask.

Phonely gives away 100 minutes, then $50 for 200 at $0.25 a minute and $150 for 650 at $0.30, and it is the one vendor here that publishes a HIPAA BAA, on its enterprise tier. If you run a practice that needs one, start here rather than with us.

Goodcall and Vandial: metered on customers, not conversations

Both count unique customers rather than calls or minutes. Goodcall is $79 a month per agent for 100 customers, $0.50 each after, with one logic flow, three team members and seven days of call history on the entry tier; $129 buys 250 customers and 30 days. Vandial is $99, $349 and $899 with unlimited call flows, no per-call or per-minute charge, and spam and wrong numbers never counted.

The meter is the point. In a trade with a season, the week that produces a third of your annual calls is the week a per-call meter produces a bill you did not budget for; on a customer meter it produces the same bill as a quiet week. Goodcall is $20 cheaper at the entry rung and a low-volume business should look at it first. Vandial's case is dispatch and refusal: a keypress-accepted escalation ladder that no voicemail can intercept, per-trade capture and guardrails across 31 trades, and a configured sentence for every question it should not answer.

Smith.ai, Nextiva XBert, RingCentral: the established names

Smith.ai gives you 25 real calls a month free, then $3.00 a call, with $150 for 75 calls and $500 for 300. It is the least expensive way in the market to find out whether your customers tolerate an AI at all, and it has the one thing no AI-native startup can offer: human receptionists on the same account if the AI is not enough.

Nextiva XBert is $99 a month for 100 interactions and $0.99 each after, as an add-on to a Nextiva plan. RingCentral's AI Receptionist publishes no price and asks you to contact sales. Both make sense if you are already on that phone system; neither is the cheapest way to buy this if you are not.

The same month, priced on every meter

Take a business that gets 100 calls a month, averaging two and a half minutes each, from about 70 different people. That is 250 minutes and 70 unique customers, and on the prices above it costs, per month: SkipCalls $19.99 flat. Upfirst $69.95, the 90-call tier plus ten calls at $1. Phonely $62.50, the 200-minute tier plus fifty minutes at $0.25. Rosie $49 on the tier that texts a link, $149 on the tier that books. Goodcall $79. Vandial $99. Nextiva XBert $99 on top of the phone plan. Dialzara $112.50, the 220-minute tier plus thirty minutes at $0.45. Smith.ai $200, the 75-call Pro tier plus 25 calls at $2. Slang.ai $399.

Now make it the busy month: 300 calls, 750 minutes, 200 customers. SkipCalls is still $19.99 and Vandial still $99. Goodcall moves to $129. Rosie's $149 tier still covers it. Upfirst is $159.95 for 300 calls. Phonely is $180, the 650-minute tier plus 100 minutes at $0.30. Dialzara is $199 for 500 minutes plus 250 at $0.40, $299. Nextiva is $99 plus 200 interactions at $0.99, $297. Smith.ai is $500 on the 300-call Enterprise tier.

Those two months are the whole argument about meters, and the arithmetic is the vendor's own. A flat or per-customer plan costs the same in the busy month; a per-call, per-minute or per-interaction plan costs two to three times as much, which is fine if the busy month is rare and expensive if it is your season.

Why Vapi, Retell, Bland and Synthflow are not on this list

They are development platforms for building voice agents, and they are good ones. They are also a completely different purchase: you supply the engineering, the telephony logic, the integrations and the maintenance.

They appear constantly in "best AI receptionist" listicles because their search volume is large and their affiliate programmes are generous. If you do not have an engineer who will own this, comparing them against a finished product is comparing a workshop against a vehicle.

Where each one actually wins

SkipCalls has the lowest published price on the page. Upfirst has the lowest per-call entry. OnCallClerk is the cheapest tier that books into a calendar. Dialzara publishes the clearest per-minute ladder and a 7-day trial. Rosie has the apps and the bilingual default. Phonely has the BAA and 100 free minutes.

Goodcall has the lowest published entry price on a customer meter, the same meter we use. Smith.ai gives you 25 real calls a month free and a human fallback. Slang.ai is deeper in restaurants than anything general can be, from $399 a month per location. Avoca is built for home services and sits in the ServiceTitan marketplace, which matters a great deal if you run ServiceTitan; it publishes no pricing.

Vandial is built around dispatch and refusal, and a flat meter that does not punish you for a busy week.