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 PolyAI
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 PolyAI.
William AI is built only for service businesses, and Real Automation's team builds, tests and launches yours. PolyAI's site lists many industries, from financial services to utilities, and its self-serve Agent Studio has you build the agent yourself. You own your William: a one-time build fee, then per-minute use, no monthly subscription. William comes with 92% call success, guaranteed.
From their own site
PolyAI
poly.ai
- Built for
- Many enterprise industries
- Ownership
- Per minute, Platform by quote
- Trained on your calls
- Only with your opt-in
- Guarantee
- Not listed
Written by Real Automation, which builds William AI. PolyAI builds dialog agents for enterprise conversations, and its site lists industries such as financial services, healthcare, hotels, retail, telecom and utilities. Facts about PolyAI come from their own site, checked . Sources.
Why service businesses choose William.
The reasons owners pick William AI over PolyAI.
Built only for service businesses
William AI is built only for the trades and service businesses: tree care, HVAC, plumbing, roofing, electrical, pest control, auto repair and more. PolyAI's homepage lists many industries, including financial services, hotels, telecom and utilities.
A real team builds it for you
Real Automation's team custom-builds, tests and launches each William AI around your services, service area and emergency rules. You never write prompts or pick voices. PolyAI's Agent Studio is self-serve: you build the agent yourself.
Yours to own
You own your William: a one-time build fee, then per-minute use while he is on the phone, with no monthly subscription. PolyAI's Platform is priced per minute, with rates quoted by their team.
92% call success, guaranteed
Every William comes with 92% call success, guaranteed. Clients average about 95%. No call success guarantee is listed on PolyAI's site.
Trained on service business calls
Your William runs on the William Engine V2, which has learned from real calls across hundreds of service businesses in private, secure environments. Client data is never shared or sold. PolyAI says its models are trained on real business interactions.
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 | PolyAI |
|---|---|---|
| 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. | PolyAI: Many enterprise industries, per their homepage. It lists consumer services, financial services, healthcare, hotels, insurance, restaurants, retail, telecom, travel and utilities. |
| 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. | PolyAI: You do, in their self-serve Agent Studio, per their docs. Their enterprise Platform starts with a demo or a talk with 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. | PolyAI: Pay per minute, with Platform rates quoted by their team. The Dialog-RSN-1 API is 2¢ per connected minute (their pricing page, November 2026), plus text tokens, phone service not included. |
| 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. | PolyAI: Only with your opt-in, per their homepage. It says your data is never trained on without opt-in, and its models are trained on real business interactions. |
| 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. | PolyAI: Platform: 24/7 support is included in the per-minute price, per their pricing page. Their homepage also links to developer docs and a Discord community. |
| Guarantee | William AI: 92% call success, guaranteed. A call counts unless the caller hung up because it was an AI; clients average about 95%. | PolyAI: 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. | PolyAI: You pick a text-to-speech voice in Agent Studio, per their docs. Their homepage says the Dialog Agent puts flows, tools and brand voice in one place. |
| Every call recorded | William AI: Yes. A recording, transcript and summary of every call, in the Real Automation app for iOS and Android. | PolyAI: Call recordings and transcripts can be viewed in Agent Studio, per their docs. |
| Try it | William AI: William calls you in 1 to 3 minutes. Enter your number on realautomation.ai. | PolyAI: Build your first agent free in Agent Studio, per their docs. The enterprise Platform starts with a demo, per their homepage. |
| 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. | PolyAI: New model versions ship with no migration project, per their pricing page. Their docs say PolyAI releases monthly Studio updates. |
Questions, answered.
Is William AI better than PolyAI?
For service businesses, yes. William AI is built only for the trades, and Real Automation's team builds, tests and launches it for you, while PolyAI's site lists many industries and a self-serve Agent Studio. You own your William, and 92% call success is guaranteed. No guarantee is listed on PolyAI's site.
Is William AI or PolyAI 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. PolyAI's focus, per its own site: many enterprise industries, per their homepage.
What is the best PolyAI alternative for service businesses?
William AI by Real Automation. It is an AI front desk built only for service businesses and the trades, answering, qualifying and booking calls 24/7 on the first ring. Real Automation's team custom-builds each William, and you own it. Real Automation has served 250+ contractors and holds 5.0 stars on Google. PolyAI's homepage lists many industries, from financial services to utilities.
How does William's pricing compare to PolyAI?
You own your William: 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. PolyAI's Platform is priced per minute through their team, and its Dialog-RSN-1 API is 2¢ per connected minute (their pricing page, November 2026), plus text tokens, with phone service not included.
Who builds and supports William?
Real Automation's team builds, launches and supports every William AI. Each one is custom-built around your services, service area, questions, booking and emergency rules, then tested on real scenarios, so you never write prompts, pick voices or wire up tools. Book a call with the team at realautomation.ai/#book. PolyAI's Agent Studio is self-serve: you sign up and build the agent yourself.
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. PolyAI's homepage says your data is never trained on without opt-in.
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 PolyAI
- poly.ai, 'PolyAI builds dialog agents that handle your most critical enterprise conversations'
- poly.ai/pricing, Platform priced per minute via 'Talk to our team'
- docs.poly.ai/get-started/quickstart, 'Sign up self-serve at studio.poly.ai, build your first agent free'
- docs.poly.ai/call-data/introduction, 'Recordings and transcripts' page: access conversation transcripts and recordings directly
- docs.poly.ai/releases/overview, Release notes hub: 'PolyAI releases monthly Studio updates.'
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.
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What to do next
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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.