AI Cold Calling & AI Receptionist Agents | IoTree Minds

AI Voice Agents

AI voice agents for cold calling and phone answering

We build AI voice agents on LLMs that talk to your customers on the phone. They answer every call as your AI receptionist, make follow-up and outbound calls, book appointments, and pass the call to a person when it needs one.

What an AI voice agent is

A phone agent that listens, understands and acts

Old phone bots made callers press numbers and repeat themselves. An AI voice agent built on LLMs understands normal speech, answers questions, and takes action: it books the appointment, updates the record or sends the follow-up.

It answers every call, at any hour, and never puts a caller on hold. When a call needs a person, it hands over with a summary, so your team never has to ask the caller to start again.

What's included

What our AI voice agents do

01

AI receptionist

An AI receptionist that answers every inbound call, day or night, answers common questions, routes callers to the right person and takes messages.

  • Every call answered, 24/7
  • Answers from your business information
  • Routing and messages for your team
02

AI cold calling and outbound calls

Outbound calls to leads and customers: first contact, follow-ups, reminders and re-engagement, with your script and your qualifying questions.

  • Lead calls and follow-ups
  • Your script and questions
  • Consent and do-not-call rules respected
03

Appointment booking and reminders

The agent books, moves and cancels appointments in your calendar, and calls or texts customers to remind them, so fewer people miss their slot.

  • Booking straight into your calendar
  • Reminder calls and texts
  • Rescheduling and cancellations
04

Hand-off to a person

When a caller needs a person, the agent transfers the call or books a callback, and passes on a summary of the conversation.

  • Live transfer or callback
  • Call summary for your team
  • Call notes saved to your CRM

Missing calls you should be answering?

Tell us how calls reach you today, and we'll show you what a voice agent would handle.

Book a free AI consultation

Who uses them

AI phone answering and calling for every kind of business

Clinics and healthcare

Appointment booking, reminders and common questions about timings and services.

Real estate

Enquiry calls answered, budget and location asked, and viewings booked.

Hotels and restaurants

Reservations, booking changes and guest questions handled on the phone.

Home services

Job requests taken, details collected and visits scheduled.

Sales teams

New leads called within minutes, qualified and booked with a rep.

Customer support lines

Order status, account questions and simple requests handled without a wait.

Want to hear it on your own calls?

Most projects start with a 2-week pilot on one type of call.

Ask about a pilot

How we work

From first conversation to production

  1. 1

    Discovery call

    We learn the calls you get, what callers ask and what should happen next.

  2. 2

    2-week pilot

    A working voice agent on one type of call, tested on real calls.

  3. 3

    Build

    We connect your calendar, CRM and phone setup, and add hand-off rules.

  4. 4

    Launch and improve

    We go live, review calls with your team and keep improving the agent.

Start with a 2-week pilot

A working voice agent on your real calls, before you commit to more.

Book a free AI consultation

Tools

Tools and models we build voice agents with

Language models
  • OpenAI GPT
  • Anthropic Claude
  • Google Gemini
  • Open-source models such as Llama
Agent frameworks
  • LangChain
  • LangGraph
Workflow automation
  • n8n
Knowledge and RAG
  • Vector databases such as Pinecone and pgvector
Voice
  • LLM-based speech-to-text and text-to-speech
Connections
  • REST APIs
  • Webhooks
  • MCP (Model Context Protocol)

FAQ

Questions about AI Voice Agents

Ask us something else
What is an AI receptionist?

An AI receptionist is an AI voice agent that answers your business calls. It greets callers, answers common questions, books appointments, takes messages and transfers calls to the right person.

What is AI cold calling?

AI cold calling means an AI voice agent makes outbound calls to leads: it introduces your business, asks your qualifying questions and books a meeting when there is interest. We design outbound calls around consent and do-not-call rules, and you decide who gets called.

Do AI voice agents sound natural?

Yes. Our voice agents are built on LLMs with natural speech-to-text and text-to-speech, so they understand normal speech and reply in a natural voice, without menus or button presses.

Can it work with our current phone number?

We'll look at your current phone setup on the discovery call and recommend the simplest way to connect the agent to it.

What happens when the caller wants a person?

The agent transfers the call to your team, or books a callback if no one is free, and passes on a summary of the conversation.

How much does an AI voice agent cost?

The cost depends on how many calls it handles, how many systems it connects to and how complex the conversations are. We give you a fixed quote after a discovery call, and a 2-week pilot is the lowest-risk way to start.

Get in touch

Tell us your requirements

Share what you'd like to build or automate. We'll reply by email to set up a free consultation.

  • Free consultation, no commitment
  • Talk to the people who will build it
  • Your details stay with us