The best AI answering service for small business is not the one with the nicest voice. For a trade shop it is the one that sorts emergencies from routine calls, follows your after-hours rules, checks your service area and books into your field service software. As of November 2026, standalone AI plans start near $25 a month and human services near $250.
This guide compares the real options with prices taken from each vendor's own pricing page, explains AI versus human versus hybrid service, lists what a trade business actually needs from an AI phone answering service, works through a cost estimate, and ends with the red flags to check before you sign.
Which AI answering services are worth comparing?
Every price below was read from the vendor's own pricing page in November 2026. Plans change often, so confirm on the vendor page before you buy. Where a vendor does not publish a number, the table says "see vendor" instead of guessing.
| Service | Type | Entry plans (monthly, as of November 2026) | Billed by | Overage and limits worth knowing |
|---|---|---|---|---|
| Smith.ai AI Receptionist | AI first (human and hybrid sold separately) | Free: $0 for 25 calls. Pro: $150 for 75 calls, with 150 and 300 call tiers at $1.80 and $1.67 per call | Answered call | Overage $2.17 to $3.00 per call by tier. Every answered call counts, with up to 10% removable as spam. Custom integrations only on Enterprise ($500 base) |
| Smith.ai receptionists | Human | Starter $300 for 30 calls, Basic $810 for 90, Pro $2,100 for 300 | Call | Overage $11.50, $10.50 and $8.50 per call. Hybrid pricing not shown: see vendor |
| Ruby | Human (AI enhancements included at no extra cost) | $250 for 50 minutes, $395 for 100, $720 for 200, $1,725 for 500 | Minute | Overage rates not published: see vendor |
| Upfirst | AI | Starter $24.95 for 30 calls, Premium $59.95 for 90, Pro $159.95 for 300, Scale $299 for 600 | Call | Overage $1.50 down to $0.70 per call. Spam, calls under 15 seconds and silent calls not billed. 14-day trial, no card |
| Rosie | AI | Professional $49 for 250 minutes, Scale $149 for 1,000, Growth $299 for 2,000 | Minute | Calendar booking and live transfers start at Scale. Overage rate not published: see vendor. 7-day trial |
| My AI Front Desk | AI | Business-in-a-Box $99 ($79 billed annually) for 200 voice minutes | Minute (credits) | Extra minutes about $0.25 each through credits. Outbound calls capped at 20 a day. 7-day trial, no free plan |
| Goodcall | AI | Starter $79 for 100 unique customers, Growth $129 for 500, Scale $299 for 2,000 | Unique caller per month | Overage 79, 26 or 15 cents per extra customer. Starter allows one external tool. No timed trial, free demo agent |
| ServiceTitan AI Voice Agent | AI built into the FSM | Usage based: see vendor | Call | Requires The Essentials and The Works packages plus Basic Phone integration or Phones Pro. Every call billed regardless of outcome |
| Jobber Receptionist | AI built into the FSM | $29 add-on, included in the Plus plan | See vendor | Usage limits not published: see vendor |
| Housecall Pro CSR AI | AI built into the FSM | See vendor (listed as an add-on, no price shown) | See vendor | Usage limits not published. Text answering described as alpha or coming soon |
Two things stand out. First, the billing unit differs: calls, minutes and unique callers are not comparable until you plug in your own numbers (there is a worked example below). Second, the field service platforms have caught up. If you already run Jobber, ServiceTitan or Housecall Pro, their own receptionist reads your schedule without any integration work, and that should be the first thing you test.
What do the built-in FSM receptionists actually do?
Jobber Receptionist answers calls and texts around the clock, books visits, turns messages into Jobber tasks, texts back callers who hang up, and transfers the call or texts you when a caller uses a keyword you set, such as "burst pipe" or "no heat." You can switch it on for calls and texts separately, for example only after hours.
ServiceTitan's AI Voice Agent books new jobs including after hours, confirms and reschedules appointments, recognizes memberships, states dispatch fees and can collect payment on open invoices (payment requires ST Payments). It escalates when the caller asks for a person, sounds frustrated, or uses a configured keyword. ServiceTitan's own FAQ lists launch limits, including that it cannot add call notes, summaries or transcripts to the booked job record.
Housecall Pro CSR AI answers calls and website chats, books onto your Housecall Pro calendar using your services, hours and availability, and transfers to a number you choose or to a Housecall Pro Assist rep when the caller asks for a person.
The catch with all three: they only know what is in that one system. If your pricing rules live in a spreadsheet, your on-call schedule lives in a group text, or your leads come through GoHighLevel, the built-in receptionist cannot see them.
AI vs human vs hybrid answering service: which fits a trade business?
We cover this decision call by call in AI phone answering vs an answering service. The short version:
- AI answering service. Cheapest per call, never puts a caller on hold, answers several calls at once, and is consistent. Weak at upset customers, unusual requests and anything that needs judgment the rules do not cover.
- Human answering service. Better with a homeowner standing in an inch of water or a customer disputing a bill. On the plans above it costs several times more per call (Smith.ai human plans run $8.50 to $11.50 per call over the allowance), and the agent still has to be trained on your rules.
- Hybrid. AI handles the routine call and hands the rest to a person, either your own staff or the vendor's. For most trade shops this is the right shape, because the hard calls are rare but expensive to get wrong.
The best answering service for small business is often your own office during the day with AI covering overflow and after hours. That is cheaper than a full human service and keeps your best people on the calls that matter.
What does a trade business need from an AI phone answering service?
Generic AI receptionist reviews test whether the voice sounds natural. A plumbing, HVAC or auto repair shop should test these five things instead.
1. Emergency triage
The service has to recognize a no-heat call in January, a gas smell or a flooding basement and route it differently from a request for a spring tune-up. Ask how it detects emergencies (keywords, intent, or both) and what it does next: warm transfer, page the on-call tech, or tell the caller to leave the house and call the gas company. Build the trigger list deliberately; our safety word list is a starting template.
2. Booking into your field service software
Taking a message is not booking. If the AI writes appointments into a separate calendar, someone in your office retypes every one into ServiceTitan, Jobber or Housecall Pro, and double bookings follow. Ask whether it reads real availability by technician and job type, and whether the booking lands as a job with the customer record attached.
3. Service-area checks
A caller 40 miles outside your area should not get a booking. Ask whether the service can check a ZIP code or address against your coverage list before it offers times, and what it says when the answer is no.
4. Pricing questions
Callers ask "how much is a service call?" constantly. Decide what the AI is allowed to quote (a published diagnostic fee, a dispatch fee) and what it must never quote (repair prices, replacement estimates). ServiceTitan's agent can state dispatch fees but cannot negotiate them; that is the right boundary for most shops.
5. After-hours rules
Who gets woken up, for what, and after what time? Is there an after-hours fee the caller must accept first? Which calls just get booked for the morning? Write the rules before you configure anything. Our guide to AI after-hours answering walks through how to set them.
Also check what happens to the calls you still miss. A text back within a minute recovers some of them, and AI missed-call text back covers how to do it without spamming people.
What does an AI receptionist cost per month? A worked example
The numbers in this example are hypothetical. Replace them with your own call log before you compare anything.
Say a 6-truck HVAC shop gets 400 inbound calls a month. The office answers most of them during the day. The shop wants AI on the rest: 120 calls a month (after hours, lunch and overflow), averaging 3 minutes each, so 360 minutes, from about 100 different phone numbers. Using the November 2026 list prices above:
- Upfirst: Premium covers 90 calls for $59.95, plus 30 extra calls at $1.00, about $90. Pro at $159.95 would leave headroom for a busy month.
- Goodcall: 100 unique callers fits Starter at $79. If those calls came from 130 numbers, add 30 at 79 cents, about $103, at which point Growth at $129 is close.
- Rosie: 360 minutes is over Professional's 250, so Scale at $149 (which you would want anyway for calendar booking and transfers).
- My AI Front Desk: $99 covers 200 minutes; 160 more minutes at about $0.25 is roughly $40, so about $139.
- Smith.ai AI: the 150-call Pro tier at $1.80 a call is $270.
- Smith.ai human: Basic covers 90 calls for $810, plus 30 at $10.50, about $1,125.
- Ruby: 360 minutes is over the 200-minute plan, so the 500-minute plan at $1,725, unless overage on a smaller plan works out cheaper (Ruby does not publish its overage rate).
The subscription is only part of the cost. Add the hours to write scripts and rules, the time someone spends reviewing call summaries each morning, and the cost of retyping bookings if the service does not write into your FSM. A $79 plan that creates 120 retyping jobs a month can cost more in office time than a $149 plan that books directly.
Watch the billing unit, too. Per-call plans punish lots of short calls, per-minute plans punish long ones, and per-caller plans are friendly to repeat callers. ServiceTitan and Smith.ai both say every answered call is billed, so ask how robocalls and wrong numbers are handled.
Is there a free AI answering service?
Yes, with limits. As of November 2026, Smith.ai has a free AI plan with 25 calls a month and no live support. Upfirst offers a 14-day trial with no card, Rosie and My AI Front Desk offer 7-day trials, and Goodcall lets you build and test a demo agent before you connect a number. Jobber and Housecall Pro offer free trials of their platforms. Use free tiers to test emergency handling and booking with your own scripts; 25 calls a month will not cover a real trade business.
Red flags when buying an AI answering service
- "Integrates with" means a Zapier link. Ask to see a booking land in your FSM, with the customer, address and job type filled in, during the demo.
- No clear emergency path. If the vendor cannot show you exactly what happens on a gas smell call at 2 a.m., do not put it on your main line.
- Unpublished overage. Several vendors above do not publish overage rates. Get the number in writing before a storm week shows you.
- Every call billed. Fine if spam filtering is good; expensive if it is not. Ask for the spam policy.
- It quotes prices you never approved. Test by asking for a water heater replacement price. The right answer is a booking, not a number.
- Outbound AI calling bundled in. In February 2024 the FCC confirmed that AI-generated voices count as "artificial" voices under the TCPA, which means consent rules apply. Inbound answering is a different thing; be careful with any feature that places AI voice calls to customers.
- No transcripts or recordings you can export. You need them to audit what was said and to leave the vendor later.
- Long contracts before a trial. Most of the vendors above are month to month. A year-long commitment before you have heard real calls is a bad sign.
How to choose in one afternoon
- Pull last month's call log and count calls you missed or sent to voicemail, by hour.
- Write your five rules: emergencies, booking, service area, pricing and after hours.
- If you run Jobber, ServiceTitan or Housecall Pro, trial the built-in receptionist first.
- Trial one standalone AI service on a forwarded line, after hours only.
- Call both yourself with ten scripted test calls, including two emergencies and one angry customer, and compare what lands in your software the next morning.
For the bigger picture of how an AI receptionist should be set up in a service business, see our AI receptionist guide.
Where Cortex fits
Cortex is not a call center and does not sell a receptionist subscription. If a built-in FSM receptionist or one of the services above does what you need, buy it; it will be cheaper than anything custom.
Cortex builds answering and missed-call handling for the cases those products miss: when the rules live in more than one system, when bookings must land in your own software with the right job type and technician, or when the handoff to your on-call person needs to follow your rules exactly. The build reads from and books into the software you already run, uses its own login with only the access the job needs, and hands any call it cannot answer from your records to a person. If you want to know which of these your shop needs, start with the free AI Operations Audit.
