This article is part of our AI Front Desk hub. Want help applying it? Talk to eSEOspace.
An AI receptionist answers with a generated voice, while an answering service answers with a trained person. Choose based on how much judgment your calls need, then price your own call volume in each vendor's billing unit.
This comparison is part of our AI Front Desk guide. Prices and features were checked on each vendor's own pages on 9 November 2026, and they can change. We have not tested these products.
Key Takeaways
- An answering service uses people, and an AI receptionist uses a generated voice.
- Smith.ai sells both, and its published AI plans cost less per included call than its live plans.
- Billing units differ, including minutes, calls and unique callers.
- Hybrid setups exist, where an AI hands a call to a live receptionist.
- Check how each service handles spam, overage and calls outside your script.
How the two compare
| Factor | AI receptionist | Live answering service |
|---|---|---|
| Who answers | Generated voice | A person |
| Works from | Your instructions and business facts | Your script and instructions |
| Handles calls at once | Up to the plan's limit | Depends on staffing |
| Handles the unexpected | Can answer wrongly; needs a fallback | Can use judgment within your script |
| Billing examples | Minute, call or unique caller | Minute or call |
This table is our summary. Check the details for the product and plan you are considering.
What each one costs
These were published prices on 9 November 2026.
| Vendor and type | Unit | Published price | Over the plan |
|---|---|---|---|
| Ruby, live | Minutes | $250 for 50, $395 for 100, $720 for 200, $1,725 for 500 | Not stated on the page |
| Smith.ai receptionists, live | Calls | $300 for 30, $810 for 90, $2,100 for 300 | $11.50, $10.50 or $8.50 per call |
| Smith.ai AI Receptionist | Real calls | Free for 25; Pro from $150 for 75 | $3.00 on Free; $2.50 on the 75-call Pro tier |
| Goodcall, AI | Unique customers | $79 for 100, $129 for 500, $299 for 2,000 | 79¢, 26¢ or 15¢ per extra customer |
| Dialzara, AI | Minutes | $29 for 60, $99 for 220, $199 for 500, $349 for 1,000 | $0.48 down to $0.35 per minute |
Smith.ai is the cleanest direct comparison because one company sells both. Its AI Pro plan starts at $150 for 75 calls. Its live Starter plan is $300 for 30 calls.
A small example (hypothetical arithmetic)
This is hypothetical arithmetic from published prices, not a quote or a result. Assume 100 calls a month, each lasting three minutes, or 300 minutes.
| Product | Calculation | Monthly total |
|---|---|---|
| Smith.ai live Basic | $810 for 90 calls, plus 10 at $10.50 | $915 |
| Ruby | 300 minutes exceeds the 200-minute plan | $1,725 on the 500-minute plan, unless Ruby quotes otherwise |
| Smith.ai AI Pro | $150 for 75 calls, plus 25 at $2.50 | $212.50 on the 75-call tier |
| Goodcall Starter | Up to 100 unique customers | $79, if each caller is unique and within the limit |
| Dialzara Business Pro | $99 for 220 minutes, plus 80 at $0.45 | $135 |
The live and AI columns don't buy the same thing. Use this to see how billing units change the total, and rerun it with your own numbers.
How billing units change the answer
Per minute rewards short calls. Ruby and Dialzara bill this way, and long conversations use up the bundle faster.
Per call makes the bill easier to predict when call length varies. Smith.ai's live page says that if your forwarded lines "pass Caller ID, you won't be charged for spam or unsolicited sales calls."
Per unique customer helps when the same people call repeatedly. Goodcall's pricing page says: "If the same person calls back five times in March, that is one customer."
Read the fine print on each unit. Our AI receptionist pricing guide goes deeper.
Which calls suit which option
These are our recommendations, based on the nature of the work.
An AI receptionist suits repeatable questions, booking requests and message taking, especially at times when no staff are available.
A live service suits callers who are upset, situations that need judgment and calls where a human voice is part of the offer.
Keep calls with your own staff when they need professional advice, involve sensitive account issues or depend on knowledge only your team holds.
Hybrid setups
You don't have to pick only one. Smith.ai's AI receptionist FAQ says a call can be transferred to a live North America-based receptionist, day or night. Its AI page doesn't state an extra charge for that transfer, so ask.
Ruby comes from the other direction. Its pricing page lists optional AI enhancements in all plans at no extra cost, alongside its live answering.
Plan what happens at the handoff. Our guide to when an AI should hand off to a person covers triggers, and it explains warm and cold transfers.
Questions to ask either provider
- What counts as a billable call or minute?
- Am I charged for spam, wrong numbers and transfers?
- What happens when I go over my plan?
- Who updates my script, and how quickly?
- Can calls be sent to my team for certain keywords or callers?
- Can it book into the calendar I actually use?
- What record of each call do I receive?
- Where is call information stored, and for how long?
If you handle patient calls, read whether an AI receptionist can be HIPAA compliant first. Ask the same questions of a live service.
Smith.ai's legal-industry page says it cannot handle calls involving protected health information. It also says it works with medical, dental and wellness practices for non-PHI call handling.
Disclosure and recording
Using a generated voice raises questions a live receptionist does not, and recording rules can apply to both. These rules vary, and this is general information, not legal advice. Start with our AI Front Desk guide and ask a qualified attorney.
Next step
Price one real month of your calls against two AI plans and one live plan. If you end up needing a custom agent tied into your own systems, our AI agent development team can scope it with you.
Frequently asked questions
Should I replace my answering service with AI?
Only if the calls it handles are repeatable and you've tested the AI on them. Try the AI on one call type or on overflow first. Keep the service until the results are clear.
Is an AI receptionist always cheaper than an answering service?
Not necessarily. In the published plans we checked, AI cost less at comparable volumes. Your total also includes setup, review and calls that still need a person. Work out the full total for your volume.
Can an answering service take bookings?
Ask each provider, because the details differ by provider and calendar. Find out whether it books directly into your system or only takes a request. The same question applies to AI products.
What about calls in the middle of the night?
Ruby lists 24/7 live answering, and Smith.ai lists live staffing 24/7. Goodcall says its AI answers every hour of every day. See after-hours calls: your options compared for other choices.
Can I try AI on just part of my calls?
That depends on how your phone forwarding is set up. After-hours or overflow calls are a sensible place to begin. Confirm the routing with your phone provider.
