On October 7, 2026, 800.com launched a seven-day free trial of its 800 AI Agents for small businesses: 250 minutes, a credit card required at signup, charged on the eighth day. AI Starter runs $49 a month billed annually or $59 monthly; AI Grow is $124 or $149. The announcement repeated a familiar statistic: small businesses miss more than half of their incoming calls, usually because the owner is on a job or the shop is closed.
That launch is the news hook, but the real story is the pricing war underneath it. Every “best AI receptionist” listicle compares headline prices and feature checklists. None of them does the comparison that decides your bill: the billing unit. A $24.95 plan can cost you $200 while a $79 plan costs you $79, depending entirely on how your customers call. This article fixes that. Every price below comes from the vendor’s own pricing page or the company’s own announcement, checked in October 2026, and the calculator at the end runs your numbers through all six billing models.
Per call, per minute, per caller: pick your poison
There are three ways these companies charge, and the unit shapes your bill more than the sticker price. The same per-unit logic now applies to messaging: WhatsApp Business charges per message since October 2026, so count replies the way you’d count minutes.
Per call (Upfirst, Smith.ai) is the simplest to understand and the easiest to misjudge. A 20-second wrong number costs exactly the same as a ten-minute appointment booking. What matters here is spam handling: Upfirst does not bill spam or silent calls under 15 seconds, and Smith.ai lets you strip up to 10% of calls per cycle as spam. If your line gets a lot of junk, that policy is worth more than a lower per-call rate.
Per minute (Dialzara, Rosie) rewards short, efficient calls and punishes long ones. Twenty quick “what are your hours?” calls are cheap; five rambling twenty-minute consultations are not. Watch for what counts as a minute: hold time, transfers, and the AI’s own pauses all burn talk time on most platforms.
Per unique caller (Goodcall) is the odd one out. Repeat callers cost nothing extra and long calls are free, but every new phone number that speaks to the agent consumes one of your caller credits. A business with 300 brief inquiries from 300 strangers pays more than a business with 50 regulars who call for half an hour each.
The takeaway before we even get to the table: pull one month of your phone log first. Count the calls, estimate the average length, and note how many are repeat callers. That thirty-minute exercise is worth more than any review.
Six services, priced the way they bill
All prices are monthly, USD, from each vendor’s own published pricing as of October 2026. Disagreements between sources are flagged in the sources section below.
| Service | Billing unit | Entry price | What it includes | The catch |
|---|---|---|---|---|
| Upfirst | Per call | $24.95/mo | 30 calls, then $1.50/call. 14-day trial, no card. Every plan includes all features: booking, transfers, SMS, 35+ languages. | Overage is per call, so high-volume months escalate fast. Higher tiers drop the overage to $1.00, $0.75, then $0.70. |
| Dialzara | Per minute | $29/mo | 60 minutes, then $0.48/min. 7-day trial. Recordings, transcripts, summaries, 50+ voices. | Calendar sync and warm transfers are gated behind the $99 Pro plan. A phone number costs extra: $3/mo local, $5/mo toll-free. |
| Rosie | Per minute | $49/mo | 250 minutes. 7-day trial. Auto-learns your business from your website, English and Spanish on every plan, spam detection. | No published overage rate anywhere, so exceeding 250 minutes is a black box. In-call appointment booking and live transfers need the $149 Scale plan. |
| Goodcall | Per unique caller | $79/mo per agent | 100 unique callers, unlimited minutes. 14-day trial. Repeat callers and long calls cost nothing extra. | It is per agent, so multi-location businesses multiply the bill. Extra callers are $0.50 each past the allowance. |
| Smith.ai (AI) | Per call | Free for 25 calls/mo | Pro is $150/mo for 75 calls, roughly $2.50 per overage call. Optional escalation to North America-based human agents. | Custom AI prompting and integrations sit in Enterprise. Per-call add-ons like appointment booking apply to every call, not just the ones that use them. The human plans start at $300/mo. |
| 800.com AI Agents | Flat tiers | $49/mo annual, $59 monthly (Starter) | Trial: 250 minutes free for 7 days. Answers missed and after-hours calls, takes messages, texts booking links, transfers. Grow ($124/$149) adds calendar booking, lead qualification, HubSpot/Salesforce sync. | Card required at signup and charged on day eight. The announcement does not state how many minutes the paid plans include, so the real per-minute value is unverifiable right now. |
Notice the pattern: the two cheapest entry prices, Dialzara at $29 and Rosie at $49, are both per-minute plans with the booking features that actually matter gated one tier up. A self-serve AI receptionist that genuinely books appointments during the call costs closer to $99 to $150 a month, not $29 to $49. That is the honesty beat most comparisons skip.
The voices themselves deserve a mention. Every one of these services is a text-to-speech layer over a phone call, and voice quality is the difference between a caller who stays and one who hangs up. If you want to hear what the current generation of AI voices actually sounds like, our ElevenLabs review breaks down the technology most of these platforms are built on.
Run your own numbers
Headline prices lie by omission. This calculator prices your month under each billing model using the published tiers above. It is our calculation, not the vendors’, and it assumes you pick the cheapest tier that fits your volume.
Play with it and two things jump out: the ranking flips with call length, and Smith.ai’s free 25-call tier is the cheapest way to test whether AI answering works for your business at all.
What the $49 price tag doesn’t tell you
Three quiet costs sit outside every pricing table:
Feature gates. Rosie reserves in-call booking and live transfers for its $149 Scale plan; the $49 plan only texts callers a booking link. Dialzara holds calendar sync and warm transfers until the $99 Pro plan. Compare the tier that does the job you actually need, not the entry tier.
Add-on creep. Smith.ai charges per-call add-ons, such as $1.50 for appointment booking, on every call in the month, not only the calls that used the feature. Dialzara’s phone number is a separate $3 to $5 a month. These are small numbers that compound.
Trial terms. Upfirst’s 14-day trial needs no credit card. 800.com’s 7-day trial requires one and charges on day eight. That is not a criticism of 800.com specifically, but set a calendar reminder before any trial that holds your card.
None of this makes these services bad. It makes the headline price a starting point for arithmetic, not a conclusion — the same lesson as the real cost of AI tools, where the subscription is rarely the whole bill.
Where the sources disagree
Pricing in this category is unusually messy. Here is what conflicts and which source I trusted:
| Conflict | What I used | Why |
|---|---|---|
| Smith.ai AI Pro overage: ~$2.50/call in one September 2026 pricing recheck vs a “$2 published rate” in another roundup | $2.50/call overage | The $2.50 figure comes from a page that rechecked Smith.ai’s own pricing page in September 2026; the $2 figure is unattributed. Verify at checkout. |
| Goodcall Starter: $79/mo on Goodcall’s own pages and Rosie’s comparison vs $59/mo on one third-party blog | $79/mo | The vendor’s own page wins. The $59 figure looks outdated or attached to a different tier. |
| Rosie overage rate: not published by Rosie; third parties quote nothing consistent | Treated as unknown | No source I could verify states it. The calculator flags this instead of guessing. |
| 800.com paid-plan minutes: absent from the launch announcement | Treated as unknown | The October 7 announcement gives prices but no minute allowances. Check 800.com/ai-agents before comparing. |
What we can’t confirm
Here is the honest boundary: I did not place test calls through any of these services. Call quality, latency, how natural the voice sounds on a bad connection, and whether callers stay on the line are all untested here. Neither are real booking conversion rates. Vendor claims about “never missing a call” describe uptime, not outcomes. And partial-minute rounding rules, which decide real per-minute bills, are unpublished for most of these vendors. Treat the calculator as a pricing model, not a performance prediction.
Who should skip AI answering entirely
Not every business should buy one of these, and the vendors won’t tell you that.
Skip AI-only if a single call can be worth thousands. Law firms, high-ticket contractors, and medical practices live on intake depth. Smith.ai’s human plans start at $300 a month for 30 calls, and Ruby’s human receptionists start around $235 to $250 a month, because a person still catches what an AI misses. If one mishandled call costs you a case or a client, the AI savings are false economy.
Skip the $49 tier if you handle regulated data. No consumer-priced AI answering plan should be assumed HIPAA-eligible or compliant with your industry’s privacy rules without a signed agreement. Get it in writing before a single patient or client call routes through the service. Our guide to AI chatbot disclosure requirements covers the related question of what you must tell callers.
Skip per-call billing if your line is noisy. Lead-generation numbers, wrong numbers, and robocalls cost the same as real customers on per-call plans. Check the spam policy before the price: Upfirst’s no-billing for spam calls is a genuine differentiator here.
And one legal note that applies to all six: recording calls triggers consent laws that vary by state and country. Before you turn on recordings, read our breakdown of call recording consent laws. A $49 tool can create a five-figure legal problem if you record where you shouldn’t.
How to pick an AI answering service without getting burned
A short checklist, in order:
1. Run the trial on your real calls. 800.com’s launch got one thing exactly right: test the agent on your own calls before you pay. Forward after-hours calls first, listen to the recordings, and check whether it booked, transferred, or just took a message.
2. Test a transfer, not just an answer. Answering is the easy part. Warm-transfer a caller to your mobile and see if the handoff is clean or awkward. This is where cheap plans usually break.
3. Read the overage clause before the feature list. Find the per-call, per-minute, or per-caller overage rate and model one bad month. If the vendor doesn’t publish one, as Rosie doesn’t, ask support in writing.
4. Write the policy before you go live. Decide what the AI may never do: quote prices, give medical or legal advice, or promise callbacks it can’t keep. Put it in your AI usage policy so staff know the boundaries too.
5. Tell callers it’s AI. Disclosure rules are tightening, and beyond compliance, callers who discover mid-call that they’ve been talking to software feel deceived. A brief “you’re speaking with our AI assistant” at the start costs nothing.
If the phone is only half your support load, by the way, it is worth looking at the bigger picture: our guide to building an AI customer support system with no code covers chat, email, and knowledge bases alongside voice. And if you’re in a missed-call-heavy trade like real estate, where one unanswered call is a lost listing, see AI tools for real estate agents. For the broader time-savings argument, how small businesses use AI to save time puts the phone in context.
How much does an AI answering service cost per month?
Published entry prices run from $24.95 a month (Upfirst, per call) to $79 a month per agent (Goodcall, per unique caller), with most services landing between $29 and $59 at the entry tier. But the entry tier rarely does the whole job: appointment booking during the call typically requires the $99 to $150 tier. Model your real call volume, not the headline.
Is per-call or per-minute pricing better for a small business?
It depends on your call pattern. Per-call pricing (Upfirst, Smith.ai) favors long conversations and punishes high call counts, since a 20-second wrong number costs the same as a ten-minute booking. Per-minute pricing (Dialzara, Rosie) favors many short calls and punishes long ones. Pull one month of your phone log and run both before deciding.
Do I have to tell callers they’re talking to AI?
Disclosure requirements are tightening in several jurisdictions, and industry-specific rules may apply. Beyond legal compliance, disclosing upfront avoids the trust damage of a caller discovering mid-conversation that they’ve been speaking with software. A one-line disclosure at the start of the call is the safe default.
Can an AI receptionist actually book appointments?
Yes, but usually not on the cheapest plan. Rosie enables in-call booking from its $149 Scale plan, Dialzara from its $99 Pro plan, and 800.com reserves calendar booking for its $124 to $149 Grow tier. Upfirst includes booking on every plan, which is unusual. Always verify booking against the tier you intend to buy, not the entry price.
What happens when the AI can’t handle a call?
Most services offer warm transfer to you or your team, message taking as a fallback, or both. Smith.ai is the only one in this comparison with optional escalation to live human agents on the same platform. Test the transfer path during the free trial; it is the moment where cheap plans most often fail.
Are AI answering services HIPAA-compliant?
Not by default. No consumer-priced plan should be assumed eligible for handling protected health information without a signed business associate agreement covering your specific workflow. Verify compliance in writing with the vendor before routing any regulated calls through the service.
Shurah is the founder of AI Tools Daily, tracking pricing, licensing and policy changes across AI tools so readers can make decisions without wading through marketing claims themselves.
