I will build ai voice agent, ai phone agent, voice assistant, voice chatbot with vapi


About this gig
Give your business a voice that never sleeps - an AI agent that answers calls, books appointments and talks to your customers 24/7.
I build AI voice agents and phone agents with Vapi, Retell AI and Twilio - production-ready, tested on real calls with human transfer built in.
What I build:
- AI Receptionist - answers inbound calls, handles FAQs, routes callers
- AI Appointment Setter - books meetings with live calendar sync, sends SMS/WhatsApp confirmations
- Outbound Calling Agent - lead qualification, follow-ups, ai cold calling campaigns
- Voice RAG Agent - answers from documents with cited sources(LangChain, vector DB) - no made-up answers
- Website Voice Widget - voice Q&A embedded on your site or app
Every build includes: natural conversation design, human handoff, CRM logging(HubSpot, Airtable), call summaries, error handling and a clear running-cost estimate before we start-no surprise bills.
Tech: Vapi, Retell AI, Twilio, ElevenLabs, OpenAI, Claude, LangChain, n8n, Pinecone
Message me before ordering - tell me your use case and I'll map the call flow with a cost estimate first.
Get to know Roman Pavlyk
AI Automation Developer AI Agents, RAG Chatbots, n8n Make com
- FromUkraine
- Member sinceMar 2025
- Avg. response time1 hour
- Last delivery1 week
Languages
English, Ukrainian
My Portfolio
FAQ
What are the running costs after delivery?
Voice agents have per-minute costs(Vapi/Retell, telephony and AI model usage) - typically 0.1-0.2 per call minute depending on setup. Before we start, I'll estimate your monthly cost based on expected call volume and I optimize the stack to keep it low. No surprises.
Do I need my own phone number? Can you set it up?
Yes, I handle it. I set up a Twilio number in your country(or port your existing business number where supported) and connect it to the agent. You keep full ownership of the number and all accounts.
Which languages and accents does the voice agent support?
English works best and the agent also supports 30+ languages including Spanish, German, French, Arabic and Hindi through providers like ElevenLabs. Tell me your target language and I'll confirm quality with a test call before you order.
3 reviews for this Gig
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Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
S stefan_gross17

Ireland
Very happy with the delivery. Professional work and delivered on time. Would definitely work together again.
$100-$200
Price
2 days
Duration
A 
Seller's Response
Helpful?M mateo_clark820

Canada
He was very responsible and committed throughout the project. You can trust him to take ownership of the task and see it through professionally.
$200-$400
Price
1 day
Duration
A 
Seller's Response
Helpful?G 
gustap_polish
Repeat Client

Poland
Great experience working with this seller. The Polymarket copy trade bot works as expected. The seller was knowledgeable.
$200-$400
Price
2 days
Duration
A 
Seller's Response
Helpful?
3 reviews for this Gig
| (3) | ||
| (0) | ||
| (0) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
S stefan_gross17

Ireland
Very happy with the delivery. Professional work and delivered on time. Would definitely work together again.
$100-$200
Price
2 days
Duration
A 
Seller's Response
Helpful?M mateo_clark820

Canada
He was very responsible and committed throughout the project. You can trust him to take ownership of the task and see it through professionally.
$200-$400
Price
1 day
Duration
A 
Seller's Response
Helpful?G 
gustap_polish
Repeat Client

Poland
Great experience working with this seller. The Polymarket copy trade bot works as expected. The seller was knowledgeable.
$200-$400
Price
2 days
Duration
A 
Seller's Response
Helpful?
