AI Solutions→AI Voice Agents
Never Miss a
Lead Again.
We build and deploy AI voice agents that answer calls, qualify leads, and book appointments 24/7 - without a receptionist, without missing a call.
Get Your Free AI Audit →Used by gym owners, dental clinics, and real estate agents across US, UK & Australia
Caller
Hi, I'm interested in joining the gym
AI
Great! I can get you booked in for a free trial. What's your name?
Caller
It's James
AI
Perfect James - I have tomorrow at 10am or 2pm. Which works?
What We Build
An AI that answers your
phone like your best staff member.
Inbound Call Handling
Answers every call instantly, 24/7. No hold music. No missed opportunities.
Lead Qualification
Asks the right questions, scores the lead, and routes hot prospects immediately.
Appointment Booking
Books directly into your calendar. Sends confirmations. Handles reschedules.
The Process
Live in 5 days.
Running forever.
We Audit Your Call Flow
We listen to your current calls, map the most common questions, and identify every drop-off point.
We Build Your AI Agent
Custom voice, custom script, trained on your business, your offer, your objections.
We Connect It to Your Stack
Wired into your CRM, your calendar, your existing phone number. Zero disruption.
It Answers. You Close.
You get a notification when a hot lead is ready. The AI handles everything before and after.
Industries
Built for service businesses
that live and die by the phone.
🏋️
Gym Owners
Never miss a trial enquiry again. AI books them while you're coaching.
🦷
Dental Clinics
Handle new patient calls and appointment requests automatically.
🏠
Real Estate
Qualify buyer and seller enquiries the moment they call.
🎯
Coaches
Intake and qualify new coaching clients without lifting the phone.
🔧
Home Services
Quote requests handled and appointments set automatically.
Deliverables
Everything built.
Everything managed.
What's included
Typical Results
Based on average across our active AI voice agent deployments
Reality Check
The difference is night
and day.
Without AI Voice Agent
- Calls go to voicemail after hours
- Receptionist costs $3–5k/month
- Inconsistent call handling
- Leads call competitors while you sleep
- Manual appointment booking
With AI Voice Agent
- Every call answered in under 2 seconds
- AI runs at a fraction of the cost
- Consistent on-brand responses, always
- Leads qualified and booked around the clock
- Automatic calendar sync + confirmation SMS
Cost Breakdown
Human vs AI receptionist.
The numbers are stark.
The average US front-desk receptionist costs $3,000–$5,000/month in base salary - before benefits, sick leave, training, and turnover. And they're only available 8 hours a day, 5 days a week. Here's what the same investment buys you with AI.
| Human Receptionist | AI Voice Agent | |
|---|---|---|
| Monthly cost | $3,000–$5,000/mo | $999/mo managed |
| Availability | Mon–Fri, 9am–5pm | 24/7 - 365 days |
| Simultaneous calls | 1 at a time | Unlimited, instantly |
| Response time | Hold music + queue | Under 2 seconds |
| Sick days / no-shows | 10–12 days/year avg | Zero |
| Training required | 2–4 weeks minimum | 5 days, done-for-you |
| Script consistency | Varies by mood/day | Identical every call |
| After-hours coverage | Voicemail only | Full call handling |
| CRM/calendar sync | Manual data entry | Automatic, real-time |
| Performance reporting | None | Weekly dashboard |
*Human receptionist cost based on US Bureau of Labor Statistics median salary data. AI managed rate based on Optimized Growth standard plan.
ROI Estimate
What does a missed call actually cost?
More than the AI.
Most service businesses miss 25–40% of their inbound calls - after hours, during peak periods, or when the team is with clients. Here's what that costs a typical gym, dental clinic, or real estate agency.
🏋️
Gym / Fitness Studio
80 missed calls/month
30% book a trial
24 missed trials/month
$120 avg member value (12-month LTV)
$2,880/month in missed revenue
$999/mo managed AI
3× ROI in month one
🦷
Dental Clinic
50 missed new-patient calls/month
40% become new patients
20 missed patients/month
$850 avg new patient value (first visit)
$17,000/month in missed revenue
$999/mo managed AI
17× ROI in month one
🏠
Real Estate Agency
30 missed buyer/seller enquiries/month
10% convert to closed deals
3 missed closings/month
$9,000 avg commission per deal
$27,000/month in missed revenue
$999/mo managed AI
27× ROI in month one
Ready to calculate your specific ROI?
Book a free audit - we'll run the exact numbers for your business and show you projected results before you commit to anything.
Get My ROI Estimate →Proof
What happens when
your phone never sleeps.
“We went from missing calls to booking 3x more trials per week. The AI voice agent handles everything while I focus on coaching.”
Marcus Reid
Owner · Iron Forge Gym
“New patient calls used to pile up after hours. Now the AI books them in and sends a confirmation automatically. We haven't missed a single enquiry.”
Sarah Chen
Bright Smile Dental
“We were losing leads to faster agents. The AI now responds the second someone calls, qualifies them, and books a viewing. Three deals closed from calls we would have missed.”
David Patel
Patel Realty
+340%
Trial Bookings
Case Study
Iron Forge Gym went from 12% call pickup to booking 3× more weekly trials.
“Within the first week our AI agent booked more trials than we had in the entire previous month. Honestly, I thought it was a fluke - it wasn't. This thing just works.”
+340%
Trial Bookings
$0
Missed Leads
14 Days
Setup Time
More Client Results
Three businesses.
Same system. Real outcomes.
🏋️
Gym · Phoenix, AZ
Iron Forge Gym
+340% trial bookings in week one
Was missing 60%+ of after-hours trial enquiries to voicemail. AI now answers every call, books the trial, and sends a confirmation SMS. First week results exceeded their entire previous month.
+340%
Trial bookings
12→100%
Call pickup rate
5 days
Setup time
"Within the first week our AI agent booked more trials than we had in the entire previous month."
🦷
Dental Clinic · Austin, TX
Bright Smile Dental
Zero missed new-patient calls
New patient calls were piling up on voicemail after 5pm - the highest-volume window for first-time callers. AI now handles all after-hours intake, books the hygiene appointment, and sends a new-patient intake form automatically.
0
Missed patient calls
+62%
New patients/month
$17K
Recovered monthly revenue
"New patient calls used to pile up after hours. Now the AI books them in and sends a confirmation automatically."
🏠
Real Estate · Chicago, IL
Patel Realty
3 closed deals from calls they would have missed
Buyer enquiries were coming in during showings when agents couldn't pick up. Three deals - all from calls the AI answered during peak showing hours - closed within 90 days of deployment. Total commission recovered: $27,000.
3
Deals from AI-answered calls
$27K
Commission recovered
< 2s
Response time
"We were losing leads to faster agents. The AI now responds the second someone calls, qualifies them, and books a viewing."
Investment
One system.
Predictable pricing.
Setup
$2,499
One-time build fee
- Full AI agent build
- Script + voice customisation
- All integrations connected
- Testing and QA
- Go-live support
Setup + Management
$2,499 + $999/mo
Everything in Setup, plus:
- Weekly performance review
- Script iteration and improvement
- CRM and calendar maintenance
- Monthly report
- Priority support
Not sure which is right? Book a free audit and we'll tell you exactly what your business needs.
Also Consider
Pair with these for
maximum impact.
AI Lead Generation
Add outbound to your inbound. AI finds and contacts prospects before they even call.
AI Workflow Automation
Connect your voice agent to your full ops stack. Zero manual work between call and close.
AI Customer Support
Handle post-sale support the same way you handle inbound sales. 24/7, automated.
TL;DR
AI voice agents are software systems that answer inbound calls, qualify callers, and book appointments — 24/7, without human staff. They work across industries including healthcare, restaurants, real estate, gyms, and dental clinics. Optimized Growth builds and manages them done-for-you. Live in 14 days from $2,499 setup.
AI voice agents by industry: where they work best
Any service business that relies on inbound calls can benefit from an AI voice agent. But the use case — and the ROI — varies significantly by industry. Below are the two fastest-growing use cases beyond the well-known verticals of gyms, dental clinics, and real estate.
AI voice agents for healthcare
90 searches/month — GP clinics, physiotherapy, allied health
Healthcare practices handle a high volume of appointment calls, referral enquiries, and after-hours queries — concentrated in the windows when front-desk staff are with patients or the clinic is closed. A missed new-patient call in a medical practice is not a minor inconvenience: it is a lost patient who called a competitor while on hold.
An AI voice agent configured for healthcare answers every inbound call, books appointments into your scheduling system, and handles common enquiries — without giving clinical advice. Anything requiring clinical judgment is flagged and escalated with a full transcript. HIPAA-compliant infrastructure is standard; clients receive a data processing agreement before go-live.
Common use cases
- →New patient appointment booking and intake form delivery
- →Referral enquiry capture and routing to the correct clinician
- →After-hours enquiry handling with next-day callback scheduling
- →Prescription refill and test result notification triage (script, not clinical advice)
- →Post-appointment recall scheduling and follow-up reminders
AI voice agents for healthcare do not provide clinical advice. They follow a scripted triage protocol and escalate outside their competency immediately.
AI voice agents for restaurants
50 searches/month — table bookings, event enquiries, availability
Restaurants lose reservations during the exact moments they are busiest. The lunch rush (12pm–2pm) and dinner service (6pm–9pm) are peak booking windows — and also the times your front-of-house team is least able to pick up the phone. An AI voice agent runs in parallel with your service, answering every call, confirming reservations, and capturing event enquiries without requiring any staff attention.
Restaurant voice agents integrate directly with OpenTable, Resy, SevenRooms, and Google Calendar. When the AI confirms a booking, it syncs immediately — no manual entry, no double bookings, no follow-up calls to confirm. For private dining and corporate events, the AI captures the brief and triggers a follow-up workflow to your events team.
Common use cases
- →Table reservation booking and modification
- →Dietary and allergen enquiries (scripted responses per your menu)
- →Private dining and corporate event intake
- →Gift voucher and opening hours enquiries
- →Walk-in availability and wait-time updates
White label AI voice agents for agencies
Marketing agencies, BPOs, and technology resellers can deploy white label AI voice agents under their own brand. Optimized Growth handles the build, integration, and ongoing technical management. Your agency manages the client relationship and sets its own pricing — the system is branded to you.
Most agency partners add white label AI voice agents as a recurring managed service line, priced at 2–4× their cost. The margin is recurring: once the system is live, client churn is low because the AI becomes embedded in their operations.
White label includes
✓Custom branding — your logo, your domain
✓Volume pricing for multi-client deployments
✓Agency dashboard for client management
✓Client-facing reporting under your brand
✓Dedicated build support for new verticals
✓NDA and white label agreement included
How AI voice agents are built
An AI voice agent is not a single piece of software — it is a stack of components working together: a voice infrastructure layer (handles call routing and audio processing), a large language model (understands the caller and generates responses), a text-to-speech engine (converts text to natural-sounding speech), and integration middleware (connects to your CRM, calendar, and phone number).
When Optimized Growth builds your AI voice agent, we select the best-fit stack for your use case, compliance requirements, and call volume. You don't need to understand the technology — we choose, configure, and manage it. You receive a working phone number and a system that books appointments.
AI voice agents — industry and use case FAQ
Can AI voice agents be used in healthcare settings?+
Yes. AI voice agents for healthcare are configured with clinical guardrails — they book appointments, handle referral enquiries, and answer administrative questions, but do not provide clinical advice or diagnose symptoms. Anything outside their defined scope is escalated with a full call transcript. All calls are processed through HIPAA-compliant infrastructure, with data processing agreements provided before go-live.
Do AI voice agents work for restaurants?+
Yes, and they solve a specific problem restaurants face: peak booking hours overlap with peak service hours, so phones go unanswered. AI voice agents for restaurants take reservations 24/7, handle dietary enquiries based on your menu, capture private dining enquiries, and sync bookings directly to OpenTable, Resy, or SevenRooms. No staff action required.
What is a white label AI voice agent?+
A white label AI voice agent is a deployable AI calling system that marketing agencies, BPOs, and technology resellers can brand and sell to their own clients. Optimized Growth offers white label AI voice agent deployments for agencies: you brand the system under your own name, set your own pricing, and we handle the build and technical management. Your client sees your brand — not ours.
Can agencies resell AI voice agents to their clients?+
Yes. Agency partners receive access to our build infrastructure, white label branding options, and volume pricing. You manage the client relationship; we handle the technical build, integration, and ongoing optimisation. Most agency partners add AI voice agents as a recurring managed service at 2–4× their cost.
How are AI voice agents built?+
AI voice agents are built using a voice AI platform (such as Vapi or Retell AI) combined with a large language model (GPT-4, Claude, or Gemini) for natural language understanding, and a text-to-speech engine for human-sounding output. The agent is connected to your phone number via SIP routing or call forwarding, then integrated with your CRM and calendar via API. The 'intelligence' is the combination of the LLM, the custom system prompt, and the knowledge base we train on your business — all configured and managed by Optimized Growth.
What technology do AI voice agents use?+
Optimized Growth AI voice agents use a combination of: Vapi or Retell AI (voice infrastructure), GPT-4o or Claude 3.5 (language model), ElevenLabs or Cartesia (text-to-speech voice synthesis), and n8n or Make for CRM/calendar integration. The specific stack is chosen based on your use case, compliance requirements, and call volume. You don't need to understand the stack — we select and manage it.
Do AI voice agents work for real estate agents and brokers?+
Yes. Real estate is one of the highest-ROI use cases for AI voice agents: buyer and seller enquiries arrive unpredictably (during showings, evenings, weekends), and response speed directly impacts conversion. The AI answers every call, qualifies the caller as buyer or seller, asks pre-qualifying questions about timeline and budget, and books a callback or viewing with the right agent. Missed leads stop being missed.
Are AI voice agents available outside the United States?+
Yes. AI voice agents support phone numbers across the US, Canada, UK, Australia, New Zealand, South Africa, and most of Western Europe. Optimized Growth has deployed AI voice agents for clients in over 40 countries. Phone number provisioning, call routing, and compliance are handled for each market as part of the setup.
FAQ
Common questions,
honest answers.
How quickly can the AI voice agent be deployed?
Most clients are live within 5–7 business days. We handle the setup end-to-end - you just review and approve the script.
Does it work with my existing phone number?
Yes. We connect to your existing number using call forwarding or SIP routing. There is zero disruption to your current setup.
What if the AI can't answer a question?
Any question the AI can't confidently answer gets flagged and escalated to a human. You also get weekly reports showing what questions are being asked so we can train the AI continuously.
Is it GDPR / HIPAA compliant?
Yes. All calls are processed through enterprise-grade infrastructure. We work with dental and medical clients who require HIPAA compliance.
Can I customise the voice and personality?
Absolutely. We choose a voice, tone, and script that match your brand. Most clients say their AI sounds better than their best staff member.
What happens if I'm not happy with the results?
We offer a performance guarantee. If you don't see measurable improvement in booked appointments within 30 days, we keep working at no extra charge.
How does the AI handle multiple simultaneous calls?
Unlike a human receptionist who can only take one call at a time, the AI handles unlimited simultaneous calls. If ten people call at the same moment, all ten are answered instantly with identical quality.
Can I see call transcripts and recordings?
Yes. Every call is transcribed and logged in your dashboard. You can review any conversation, listen to recordings, and see the full lead qualification data captured from each call.
What industries does this work best for?
Any service business that relies on inbound calls: gyms, fitness studios, dental and medical clinics, real estate agencies, law firms, home services, coaches, and salons. If your business books appointments or handles enquiries over the phone, we can automate it.
How does the AI integrate with my booking system and CRM?
We integrate with Cal.com, Calendly, Google Calendar, GoHighLevel, HubSpot, and most major CRM platforms. When the AI books an appointment, it syncs directly - no manual data entry, no follow-up from your team required.
What does the 5-day setup process actually involve?
Day 1–2: We audit your call flow, map common questions, and identify drop-off points. Day 3–4: We build your AI agent with custom voice and script. Day 5: We connect everything to your phone, CRM, and calendar, run live tests, and you approve before go-live.
What does the AI cost compared to a human receptionist?
A full-time US receptionist costs $3,000–$5,000/month in salary plus benefits. Our managed AI voice agent runs at $999/month - available 24/7 with no sick days, no overtime, and zero missed calls. Most clients break even within the first week of deployment.
Stop Missing Calls.
Start Booking More.
Book a free 30-minute AI audit. We'll show you exactly how an AI voice agent would work for your specific business - before you spend a dollar.
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