AI voice agents
your leads love talking to.

Our voice agents call, qualify and book your leads in seconds. When a call is not answered, the same AI follows up by text or WhatsApp until the lead is booked, and it runs as chat on your website too. One intelligence, every channel. You only pay when we deliver.

Hear a Real Call

<5s

Form to Call Response

17-25%

Booking Rate on Cold Leads

24/7

Always-On Coverage

I'm not an AI fan, but you have changed my mind.
AndyManaging Director, International Property Alerts
Read our latest case study →

Hear what natural AI voice actually sounds like.

Stellar's voice agents sound natural because we invest in the details that matter most: warm pacing, natural hesitation, the ability to handle interruptions without losing the conversation, and the focus to stay on track toward one goal. Figuring out if this lead is real and getting them booked in with you.

Before our first client sent a single real lead through the system, he tested the voice himself. He called in, asked the kind of curveball questions a real customer would ask, and reacted in the moment. His verdict:

"That's just so unreal, well done!"Denes Aldott, EasyStart Homes

That client, Denes Aldott from EasyStart Homes, has now been live for over 6 months. His leads do not realise they are talking to AI.

This is also why we are confident enough to tie our pricing to results. When the AI sounds this natural, leads engage. When leads engage, they qualify. When they qualify, they book. We built a system that works, and we priced it so you only pay when it does.

One brain. Every channel.

We build one AI agent, one prompt and one strategy for your goal, then run it everywhere. Whether your lead talks to it, texts it or messages it on WhatsApp, it is the same intelligence driving the same conversation toward the same booking.

The follow-up

AI Text

When a call goes unanswered, the same agent follows up by SMS and holds a real two-way conversation until the lead is qualified and booked.

The global channel

AI WhatsApp

For markets that live on WhatsApp. The system automatically chooses text or WhatsApp based on the lead's country.

The same agent can also run as a chat widget on your website, feeding the exact same qualify and book flow.

New leadAd response, form fill or aged list
Voice call in secondsAnswered? Qualified and booked
Text or WhatsApp follow-upChosen by the lead's country
Qualified and bookedOn your calendar, with the full record

Voice stays the closer. When a lead re-engages by message, the agent loops back to a call. No disconnected chatbot that forgets what the caller already said. No separate SMS tool with its own clunky script. Consistent tone, consistent qualifying logic, consistent outcome.

Free industry guides

How to use AI voice in your industry

Pick your industry and we'll email you a practical playbook: where the revenue leaks, what to fix first, and what good looks like.

30-second test

How much revenue is your phone leaking?

Take the quick test and see, to the dollar, what slow follow-up, missed calls, and after-hours enquiries are costing your business every month. We will also show you which of our plans matches your business and what you would pay only when we deliver.

Our Products

Three AI products, voice first with text and WhatsApp follow-up built in. One goal: make sure you never lose a lead to slow response time again.

Outbound Sales Qualifier

Low monthly retainer + you pay per qualified booking

Instant lead response. Seconds, not hours.

  • ✓ The moment someone responds to your ad, we call them
  • ✓ No answer? The same AI follows up by text or WhatsApp
  • ✓ Qualifies them on the call against your criteria
  • ✓ Books them into your calendar before they shop around

Dead Lead Reactivation

Low monthly retainer + you pay per qualified booking

Your old database, worth real money again.

  • ✓ We call your aged-lead database on your behalf
  • ✓ Identifies who's ready to move, now
  • ✓ Works the list by call, text and WhatsApp until they respond
  • ✓ Puts re-activated prospects back on your calendar

Inbound Sales Qualifier

Low monthly retainer + you pay per qualified booking

Inbound calls answered, qualified, and booked. 24/7.

  • ✓ Answers every inbound call instantly, day or night
  • ✓ Qualifies each caller against your custom script
  • ✓ Books qualified prospects directly into your calendar
  • ✓ Every call recorded, transcribed, and scored

What sets us apart

Reliability is the product.

Anyone can demo an AI agent. Making one dependable enough to represent your business on every call is the hard part, and it is exactly where we have invested.

Best-in-class AI, orchestrated in-house

We build on the strongest AI available today: Google Gemini, OpenAI's ChatGPT models and ElevenLabs voices. Our own platform orchestrates them into one dependable agent, and when a better model ships, your agent gets it.

A testing and simulation system like no other

We built our own state-of-the-art testing and simulation platform because nothing off the shelf met our bar for reliability. Every agent runs hundreds of simulated conversations, objections, edge cases and guardrail probes before it ever speaks to a real lead.

Every call makes it better

Every conversation is recorded, transcribed and scored, and we use it to keep improving your agent over time. Reliability is not a launch-day feature. It compounds.

Built end to end, in-house

Our platform is our own. When something needs to be better, we change it that day, not when a vendor's roadmap allows. That is how the agents stay fast, accurate and dependable at scale.

Done-for-you

Want the whole funnel handled?

The Appointment Engine runs your ads, calls every lead within 30 seconds, and books qualified appointments straight into your calendar. Your team just closes. 2-week pilots from $2,500.

Explore the Appointment Engine →

Built for professional verticals.

We focus on industries where one qualified booking is worth thousands.

Real Estate
Hotels
Solar Energy
Healthcare
Finance

Plan Finder

Find the best plan for your business.

Answer four quick questions and we will match you to the right plan. Every plan includes performance-based pricing. You pay a low retainer plus a fee per qualified booking.

Built by people who understand sales.

Gary Sarco

Gary Sarco

CEO & Founder

David Taylor

David Taylor

Co-Founder & CTO

Read our full story →

Questions, answered.

Do the AI agents sound robotic?

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No. Our agents respond in under two seconds with natural-sounding voices and real conversational tone. Most callers do not realise they are talking to AI.

What does it cost?

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Our pricing is performance based: a low monthly retainer plus a fee per qualified booking, so the majority of what you pay only kicks in when we deliver. Book a demo and we will scope it for your lead volume.

Which channels do you support?

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Voice is the flagship. The same agent also runs over SMS, WhatsApp and website chat, so a lead who does not answer the phone still gets followed up until they are booked.

How do you choose text vs WhatsApp?

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Automatically, by the lead's country. Markets that live on WhatsApp get WhatsApp; everyone else gets SMS. Same agent, same conversation, either way.

How fast can you deploy an agent?

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Standard deployment takes 5 to 7 business days, including training, scripting, and CRM integration.

Does it integrate with my CRM?

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Yes. We integrate with most major CRMs, Google Ads, Meta Ads, and connect via webhooks or Zapier.

What if the AI cannot handle a question?

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Our agents gracefully escalate to a human. You control the handoff rules; the lead never feels abandoned.

Never lose another lead.

Book a 30-minute demo with our AI voice specialist and hear exactly how AI voice agents can engage, qualify, and book appointments for your team. 24/7.

Performance-based pricing. You only pay when we deliver qualified bookings.

Hear a Live Call