Ruby vs Smith.ai: Pricing, Features & AI Alternative (2026)
Compare Ruby Receptionists vs Smith.ai side-by-side — pricing, features, 24/7 availability, and how AI answering services compare to both.
Ruby Receptionists and Smith.ai are two of the most well-known answering services. Both promise to handle your calls professionally — but they take very different approaches and charge very different prices.
If you are comparing the two, this guide breaks down what each service actually delivers, what it costs, and where a newer category — AI-powered answering — fits in.
Ruby Receptionists: Human-First, Premium Pricing
Ruby (formerly Ruby Receptionists) uses live, US-based receptionists to answer calls. Their team handles greetings, message-taking, call transfers, and basic intake.
What Ruby does well:
Ruby's limitations:
Ruby pricing breakdown:
| Plan | Minutes | Monthly Cost | Cost per Included Minute |
|---|---|---|---|
| Ruby 50 | 50 min | ~$250 | ~$5.00 |
| Ruby 100 | 100 min | ~$395 | ~$3.95 |
| Ruby 200 | 200 min | ~$720 | ~$3.60 |
| Ruby 500 | 500 min | ~$1,725 | ~$3.45 |
Ruby's pricing page says every plan includes 24/7 coverage (nights, weekends and holidays) and lists no setup fee. A service business handling 300 calls a month at 2 to 3 minutes each uses 600 to 900 minutes, which is past the largest published plan before any extra minutes. (Prices from ruby.com, checked October 2026.)
Smith.ai: Virtual Receptionists With AI Assist
Smith.ai sells two kinds of plans: human-first, where live receptionists answer, and AI-first, where an AI receptionist answers. Their agents answer calls, qualify leads, book appointments, and even handle outbound calls.
What Smith.ai does well:
Smith.ai limitations:
Smith.ai pricing breakdown:
| Plan | Calls | Monthly Cost | Per-Call Overage |
|---|---|---|---|
| Starter | 30 calls | $300 | $11.50/call |
| Basic | 90 calls | $810 | $10.50/call |
| Pro | 300 calls | $2,100 | $8.50/call |
| Enterprise | Custom | Quoted | Varies |
Those are the human-first plans. Smith.ai's AI-first plans start free for 25 calls a month ($3.00 per call after that), and AI Pro is $150/month for 75 calls. For a service business handling 200 calls a month on a human-first plan, Smith.ai costs about $1,965 (Basic plus 110 extra calls at $10.50). (Prices from smith.ai, checked October 2026.)
Ruby vs Smith.ai: Head-to-Head Comparison
| Feature | Ruby | Smith.ai |
|---|---|---|
| Receptionist type | Human only | Human-first or AI-first plans |
| 24/7 availability | Included on every plan | Included on every plan |
| Appointment booking | Optional feature | Yes (via Calendly, etc.) |
| Lead qualification | Client intake (optional) | Yes, with custom intake |
| Pricing model | Per minute (~$250/50 min) | Per call ($300/30 calls, human-first) |
| 200-call monthly cost | About $1,725 on the 500-minute plan (2.5 min a call) | About $1,965 (human-first) |
| Industry specialization | General | General |
| Spanish support | Yes | Yes (add-on) |
| CRM integrations | Limited | Extensive |
| Outbound calling | Outbound call assistance | Yes |
Bottom line: Both put trained people on your calls, and both answer 24/7. Smith.ai bills per call and builds in booking and lead qualification; Ruby bills per minute and offers scheduling and intake as optional features. Both get expensive for service businesses that handle high call volumes.
The Third Option: AI Answering Services
Ruby and Smith.ai's human-first plans rely on people — which is why they charge premium per-minute or per-call rates. A newer category of answering service uses AI to handle calls directly, with no human operators.
AI answering services use voice AI to answer calls, ask qualifying questions, book appointments, and send notifications, usually on a monthly plan with a block of minutes included.
How AI answering stacks up:
| Feature | Ruby | Smith.ai | AI Answering (Callbook) |
|---|---|---|---|
| Availability | 24/7 | 24/7 | 24/7 |
| Pricing | $250-$1,725/mo | $300-$2,100/mo (human-first) | From $149/mo |
| Usage charges | Per minute; overage rate not published | $8.50-$11.50 per extra call | $0.40/min past the included minutes |
| Appointment booking | Optional | Via Calendly | Books onto Google Calendar |
| Industry specialization | General | General | Built for service trades |
| Emergency detection | Script-dependent | Script-dependent | Automatic |
| Call recordings | Yes | Yes | Yes |
| Setup time | Days | Days | 5 minutes |
Why service businesses are switching to AI:
1. Predictable pricing — Each plan includes a block of minutes (300 on Solo), and minutes past it cost $0.30–$0.40 each depending on the plan, a fraction of a person's per-minute or per-call rate.
2. True 24/7 — AI does not need shifts, breaks, or holiday coverage. Every call is answered instantly, including nights, weekends, and holidays.
3. Industry-specific intake — Instead of generic message-taking, AI trained for plumbing asks about leak location and water heater age. AI trained for HVAC asks about system type and whether it is heating or cooling. This means better lead qualification from the first call.
4. Instant booking — Appointments go directly into your Google Calendar. No telephone tag, no missed follow-ups.
Which Service Is Right for You?
Choose Ruby if:
Choose Smith.ai if:
Choose AI answering if:
Going the AI route and weighing the options? We have side-by-side breakdowns of the major AI receptionists too: Retell AI, Bland AI, Synthflow, Dialzara, and My AI Front Desk.
Further Reading
Competitor prices in this article come from each vendor's public pricing page; the linked comparison pages show when each was last checked. Callbook's own prices are rendered from its live plan catalog. How we compare.
Frequently asked questions
What is the main difference between Ruby and Smith.ai?
Both are human-powered virtual receptionist services. Ruby leans on its own trained receptionist team with per-minute plans; Smith.ai combines human receptionists with AI assistance and bills per call. Both get expensive quickly as call volume grows.
Is there a cheaper alternative to Ruby and Smith.ai?
Yes - AI receptionists. Callbook answers 24/7 in English and Spanish, books jobs onto your calendar, and costs $149/month with 300 minutes included and $0.40 a minute after that, instead of paying for a person's time by the minute or by the call.
Do Ruby and Smith.ai answer after hours?
Yes. Ruby says every plan includes 24/7 coverage, including nights, weekends and holidays, and Smith.ai says its receptionists are available 24/7. Both still bill for that time, Ruby by the minute and Smith.ai by the call, so a busy night raises the bill like a busy day. An AI receptionist also answers 24/7, with a block of minutes included in the monthly plan.
How do I choose between a human service and AI for my business?
Ask what your calls actually are. If most are booking, pricing, and "when can you come," AI handles them at a fraction of the cost. If your intake needs human judgment on every call, a service like Ruby or Smith.ai may fit. Test the AI option free by calling the Callbook demo line: (904) 799-5138.
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