I will build a retell ai or vapi voice agent to answer calls and book clients


About this gig
Never miss a call again. I build AI voice agents with Vapi and Retell AI that answer your phone, book appointments and qualify leads 24/7, in a natural human voice.
I'm the CTO of an AI company building a voice first AI assistant that places real phone calls, and I have been freelancing since 2016. Voice agents are what I build every day.
What I can build for you:
An AI receptionist that answers FAQs, takes messages and books appointments
An AI calling agent for outbound lead follow up, reminders and surveys
A GoHighLevel AI voice agent that updates contacts, tags and pipelines
Call transfer to a human when the caller needs one
Call summaries and transcripts sent to email, Google Sheets or your CRM
Integrations: Vapi, Retell AI, Twilio numbers, GoHighLevel, HubSpot, Google Calendar, Cal.com, n8n, Make and Zapier, OpenAI.
Every order includes a tested agent, a short video walkthrough and a call script you can edit yourself.
Not included: Vapi, Retell, Twilio or OpenAI usage fees. They are billed to your own accounts so you keep full ownership.
Message me with your use case and I'll recommend the right package.
Get to know HM Ammar
AI Automation Engineer and Full Stack Web Developer
- FromMalaysia
- Member sinceOct 2026
Languages
Urdu, English
FAQ
Vapi or Retell AI, which one should I use?
Both are excellent. I pick based on your budget, voice quality needs and integrations, and explain why before starting.
What does it cost per minute to run?
You pay Vapi or Retell and the phone provider directly. I estimate your per minute cost before we start.
Can it work with GoHighLevel?
Yes. The agent can create or update contacts, add tags, move pipeline stages and book into GHL calendars (Premium, or Standard with a custom offer).
Can it speak other languages or use a custom voice?
Yes. Most major languages are supported, and you can choose from many natural voices or use a cloned voice you have rights to.
Can it make outbound calls?
Yes, in the Premium package. You are responsible for consent and local calling rules for the numbers you call.
How fast can my agent go live?
Basic is live in 3 days, or 1 day with the extra fast delivery option.
Will it sound robotic?
You choose from natural voices, and I tune pauses and interruptions during testing.
