Better for service businessesBetter choice
William AI
by Real Automation · 5.0 on Google
- Built for
- Service businesses only
- Ownership
- You own it, no subscription
- Trained on your calls
- Yes, never shared or sold
- Guarantee
- 92% call success
5.0 Google Reviews
William AI vs Aira
The better choice for service businesses. An AI receptionist built for the trades, owned by you, and guaranteed.
Hear William call youFor service businesses, William AI is the better choice over Aira: built for you by a real team, and yours to own.
William AI is custom-built for your service business by Real Automation's team, and you own it, with no monthly subscription. Aira's guided setup has you add your website, pick a voice and set call rules, and its plans are monthly or annual, metered by calls. Its industries page lists 73 industries; William is built only for service businesses.
From their own site
Aira
getaira.io
- Built for
- 73 industries, several products
- Ownership
- Monthly plan, metered by calls
- Trained on your calls
- Trained on your website
- Guarantee
- Not listed
Written by Real Automation, which builds William AI. Aira sells an AI receptionist and other front-office AI products, and its industries page lists 73 industries, from architects to nail salons. Facts about Aira come from their own site, checked . Sources.
Why service businesses choose William.
The reasons owners pick William AI over Aira.
Built for you by a real team
Real Automation's team custom-builds your William around your services, service area, booking and emergency rules, then tests it on real scenarios. Aira's guided setup has you add your website, pick a voice, set call rules and run test calls.
You own it, no monthly subscription
You own your William AI: a one-time build fee, then per-minute use while William is on the phone. Aira sells monthly or annual plans metered by calls, with monthly billing from $24.95/month (their pricing page, November 2026).
Built only for service businesses
William AI is built only for service businesses and the trades: tree care, HVAC, plumbing, roofing, electrical and more. Aira's industries page lists 73 industries, including architects, car rental, law firms and dental offices.
Trained on real calls, privately
Your William is trained on real calls in private, secure environments. Client data is never shared or sold. The William Engine V2 has learned from real calls across hundreds of service businesses. Aira learns from your public website, per its setup page.
92% call success, guaranteed
Real Automation guarantees 92% call success, and clients average about 95%. No guarantee is listed on Aira's site.
5.0 on Google. Every review, five stars.
Owners who run on William rate Real Automation five stars. Hear it from them in their own words.
Side by side.
The things a service business owner actually weighs.
| Compared | William AI | Aira |
|---|---|---|
| Built for | William AI: Service businesses only. Tree care, HVAC, plumbing, roofing, electrical, pest control, auto repair and more, with one job: answering, qualifying and booking calls, 24/7, on the first ring. | Aira: Many industries and products. Their industries page lists 73, from architects to nail salons, and their home page also lists AI Search, Lead Conversion and Paid Campaigns. |
| Who builds it | William AI: Real Automation's team, for you. They build William around your services, service area, questions and rules, test it on real scenarios and launch it. | Aira: You do, through a guided setup. You add your website, pick a voice, set call rules and run test calls, with support from their team. |
| Ownership and pricing | William AI: You own it. A one-time build fee, then you pay only for the minutes William is on the phone, like buying the car and paying for gas. No monthly subscription; pricing is set on a call with the team. | Aira: Monthly or annual plans metered by calls. Monthly billing starts at $24.95/month (their pricing page, November 2026), with 30 calls a month on Starter and $1.50 per additional call. |
| Trained on your calls | William AI: Yes, in private. William is trained on real calls in private, secure environments, and your data is never shared or sold. | Aira: Trained on your public website. Their setup page says Aira can use it to learn your services, hours and common questions. |
| Support | William AI: A real team. Real Automation builds, launches and supports your William, and you can book a call with the team any time. | Aira: Setup and integration support on every plan, per their setup page. Their home page lists a consultation link and a contact email. |
| Guarantee | William AI: 92% call success, guaranteed. A call counts unless the caller hung up because it was an AI; clients average about 95%. | Aira: Not listed on their site. |
| Voice and personality | William AI: Warm, natural and charismatic. William's own voice, with conversion and charisma training since V1; natural, not robotic. | Aira: You choose a voice. Their pricing page lists 200+ voices and 74+ languages, and their home page says Aira answers in your brand voice. |
| Every call recorded | William AI: Yes. A recording, transcript and summary of every call, in the Real Automation app for iOS and Android. | Aira: Yes, with recordings, transcripts and summaries. Their home page says every call is transcribed, tagged and searchable. |
| Try it | William AI: William calls you in 1 to 3 minutes. Enter your number on realautomation.ai. | Aira: Test calls during their guided setup. Their setup page says many businesses can reach a first test call in about ten minutes when their website and call rules are ready. |
| Upgrades | William AI: Overnight, for every client. William runs on the William Engine, Real Automation's own voice AI engine; V3 arrives free for V2 clients by January 1, 2027. | Aira: You update it as your services change. Their setup page says you can update Aira as your services or process change. |
Questions, answered.
Is William AI better than Aira?
For service businesses, yes. William AI is custom-built for you by Real Automation's team, while Aira's guided setup has you add your website, pick a voice and set call rules. You own William, with no monthly subscription; Aira sells monthly or annual plans metered by calls. William is built only for service businesses, and Aira's industries page lists 73 industries.
Is William AI or Aira better for a plumbing or HVAC company?
William AI. It is an AI receptionist built only for service businesses and the trades, including HVAC, plumbing, roofing, electrical, tree care, pest control and auto repair, and Real Automation's team builds it around your services, service area, questions, booking and emergency rules. You own it with no monthly subscription, and 92% call success is guaranteed. Aira's focus, per its own site: many industries and products.
What is the best Aira alternative for service businesses?
William AI by Real Automation. It is an AI front desk built only for service businesses and the trades, with one job: answering, qualifying and booking calls, 24/7, on the first ring. Real Automation's team builds, tests and launches each William, so you never write prompts, pick voices or wire up tools.
How does William's pricing compare to Aira?
William AI is yours to own: a one-time build fee, then per-minute use while William is on the phone, with no monthly subscription. Real Automation does not publish prices. Aira sells monthly or annual plans metered by calls: monthly billing starts at $24.95/month (their pricing page, November 2026), and Starter includes 30 calls a month, then $1.50 per additional call.
Who builds and supports William?
William AI is built, launched and supported by Real Automation's team. They custom-build William around your services, service area, booking and emergency rules, and test it on real scenarios, so you never write prompts, pick voices or wire up tools. Book a call with the team at realautomation.ai/#book. Aira is set up through a guided flow where you add your website, pick a voice and set call rules, with support from their team.
Is William trained on my calls?
Yes. William AI is trained on real calls in private, secure environments, and client data is never shared or sold. The William Engine V2 has learned from real calls across hundreds of service businesses. Aira's setup page says Aira can use your public website to learn your services, hours and common questions.
Can I hear William before I buy?
Yes. Enter your phone number on realautomation.ai and William calls you in 1 to 3 minutes. Try it at https://realautomation.ai/pages/ai-receptionist#demo, or book a call with the team at https://realautomation.ai/#book.
More comparisons
Sources for Aira
- getaira.io, AI workforce for the front office
- getaira.io/receptionist/pricing, Monthly billing starts at $24.95
- getaira.io/receptionist/setup, Guided setup (add your website and business details, pick a voice, set call rules
- getaira.io/receptionist/industries, AI Phone Agent for Every Industry: 73 industry cards, from Architect to Nail Salons
Checked . Product names are trademarks of their owners; see each company's site for current details. William AI's Google rating: Real Automation's Google Business Profile, November 2026.
$105.4M
in new revenue generated for our network and counting.
250+
Contractors Served
The William Engine.
William isn't a voice you pick and a prompt you write. He runs on our own engine, built, owned and improved by Real Automation, and every client gets the upgrades.
-
V1Where William started.
Proved a phone call with an AI could feel personal.
-
V2Running every William today.
Tested on real client calls, then delivered to every V1 client overnight. Results jumped the next morning.
-
V3Coming free to every V2 client.
Our fastest, most personal engine yet. In production beta on real calls now, and every client gets it.
An employee you own.
You don't rent a bot or wire up a platform. You own your William and everything he learns about your business.
Upgrades while you sleep.
Like an update on your phone, new engine versions reach every William overnight. Nothing to rebuild.
Trained on real calls.
William keeps learning from real conversations in private, secure environments. We never share or sell your data.
Real Automation designs, builds and owns the William Engine. We never white-label, resell or license it.
Hear William call you.
Enter your name, number and website. William calls you in 1 to 3 minutes. Talk to him like a customer would.
By submitting this form, you consent to receive an automated call from Real Automation at the number provided.
Your demo is building
You will receive a call soon.
What to do next
1Watch for a call from 218-297-5444 within a few minutes.
2Pick it up when it rings.
3Talk to William like you are talking to a real front desk.
Talk to the team.
Pick a time that works for you. 45 minutes with the people who build William.