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 Rosie
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 Rosie: built for you, owned by you, guaranteed.
William AI is custom-built for your service business by Real Automation's team, and you own it with a one-time build fee and per-minute use. Rosie is a monthly subscription from $49/month (their pricing page, November 2026) that you set up yourself on most plans, with no guarantee listed. William comes with a 92% call success guarantee and runs on its own engine.
From their own site
Rosie
heyrosie.com
- Built for
- Many industries, plus Shopify
- Ownership
- Monthly subscription
- Trained on your calls
- Learns from your website
- Guarantee
- Not listed
Written by Real Automation, which builds William AI. Rosie is an AI answering service whose site says it serves small businesses and solo owners, from home services to law firms. Facts about Rosie come from their own site, checked . Sources.
Why service businesses choose William.
The reasons owners pick William AI over Rosie.
Built for you by a real team
Real Automation's team custom-builds, tests and launches your William. You never write prompts or pick voices. Rosie's site walks you through setting it up yourself, with a setup specialist listed only on its Growth plan.
You own it, no subscription
You own your William: a one-time build fee, then per-minute use while William is on the phone. No monthly subscription. Rosie is a monthly subscription from $49/month for 250 minutes (their pricing page, November 2026).
Built only for service businesses
William AI does one job for the trades: answering, qualifying and booking calls for tree care, HVAC, plumbing, roofing and more. Rosie's site lists many industries, from law firms to salons, plus a Shopify version.
92% call success, guaranteed
Your William comes with a 92% call success guarantee. Clients average about 95%. No guarantee is listed on Rosie's site.
Its own engine, upgraded overnight
The William Engine, Real Automation's own voice AI engine, runs every William. V3 rolls out free to every V2 client, overnight, by January 1, 2027. Rosie's blog says it runs on technology from its partner, Bland AI.
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 | Rosie |
|---|---|---|
| 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. | Rosie: Many industries, plus a version for Shopify stores. Their site lists home services, law firms, property management, real estate, automotive, salons and accounting. |
| 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. | Rosie: You set it up yourself; a setup specialist is listed on the Growth plan only. Their site says you add your site or Google profile, customize your information, test it and forward your calls. |
| 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. | Rosie: Monthly subscription from $49/month for 250 minutes (their pricing page, November 2026). Scale is $149/month and Growth is $299/month. |
| 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. | Rosie: Learns from your website and Google profile, per their pricing page. Uploading your own training documents is listed on the Growth plan. |
| 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. | Rosie: Priority support and white-glove onboarding are listed on the Growth plan only. Their site also links a help center. |
| Guarantee | William AI: 92% call success, guaranteed. A call counts unless the caller hung up because it was an AI; clients average about 95%. | Rosie: 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. | Rosie: A choice of 10+ voices and a custom name, per their site. Their site says Rosie speaks English and Spanish on every call. |
| Every call recorded | William AI: Yes. A recording, transcript and summary of every call, in the Real Automation app for iOS and Android. | Rosie: Every call is summarized, transcribed and recorded, per their site. |
| Try it | William AI: William calls you in 1 to 3 minutes. Enter your number on realautomation.ai. | Rosie: 7-day free trial, per their pricing page. |
| 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. | Rosie: Runs on technology from its partner Bland AI, per their blog. Their blog says Rosie is integrating Bland 2.0, a new model from Bland AI. |
Questions, answered.
Is William AI better than Rosie?
For service businesses, yes. William AI is custom-built and launched by Real Automation's team, while Rosie's site has you set it up yourself on most plans. You own William with no monthly subscription; Rosie is from $49/month (their pricing page, November 2026). William also guarantees 92% call success, and no guarantee is listed on Rosie's site.
Is William AI or Rosie 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. Rosie's focus, per its own site: many industries, plus a version for Shopify stores.
What is the best Rosie alternative for service businesses?
William AI by Real Automation. It is an AI front desk built only for service businesses and the trades, custom-built around your services, service area, booking and emergency rules, then tested and launched by a real team. You own it, it answers 24/7 on the first ring, and Real Automation has served 250+ contractors and holds 5.0 stars on Google.
How does William's pricing compare to Rosie?
William AI has a one-time build fee, so you own it, then per-minute use while William is on the phone. There is no monthly subscription, and Real Automation does not publish prices. Rosie is a monthly subscription: Professional is $49/month for 250 minutes, Scale is $149/month for 1,000 minutes and Growth is $299/month for 2,000 minutes (their pricing page, November 2026).
Who builds and supports William?
William AI is built, tested, launched and supported by Real Automation's team, around your services, service area, questions, booking and emergency rules. You can book a call with the team at realautomation.ai/#book. Rosie's site has you add your website or Google Business Profile, customize your information, test it and forward your calls, with white-glove onboarding and priority support listed only on its Growth plan.
Is William trained on my calls?
Yes. William AI is trained on real calls in private, secure environments, and your data is never shared or sold. The William Engine V2 has learned from real calls across hundreds of service businesses. Rosie's pricing page says it learns from your Google profile and website.
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 Rosie
- heyrosie.com, Rosie as an AI answering service for small businesses and solo owners
- heyrosie.com/pricing, Professional $49/month (250 minutes), Scale $149/month (1,000 minutes)
- heyrosie.com/solutions, Industries listed, including small businesses, plumbing, HVAC, construction, accounting
- heyrosie.com/features/shopify-app, A version of Rosie for Shopify stores
- heyrosie.com/blog/rosie-now-powered-by-bland-2-0, Rosie runs on technology from its partner Bland AI and is integrating Bland 2.0
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.
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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.
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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.