I will build custom vapi ai voice agent, retell ai receptionist, or voice bot


About this gig
Stop letting missed calls and unaddressed leads drain your business revenue. I build ultra-low latency, incredibly human-sounding AI voice agents and receptionists that answer 24/7, qualify raw prospects, and close appointments completely on autopilot.
Whether you are managing a Real Estate firm, Medical clinic, SaaS start-up, or Local services, I build high-converting phone bots tailored to your custom business rules using Vapi AI and Retell AI.
What your Voice AI Agent will execute:
- 24/7 Availability: Handles thousands of concurrent calls seamlessly without missing a beat.
- Live Booking: Hooks into Calendly or Google Calendar live on the call to lock down appointments.
- CRM & Automation: Instantly updates GoHighLevel or HubSpot, logs call data, and triggers custom SMS follow-ups post-call via Make.com.
Tech Stack: Vapi AI, Retell AI, Bland, Groq, OpenAI API, Telnyx, Make, and Python.
Why me? No robotic interruptions or weird pauses. I script tightly engineered prompts for natural pacing and human-like flow. You get full testing and system transfer.
️IMPORTANT: Every routing setup varies. Please message me before ordering to safely map out your specific call workflows!
Get to know Subhan Ahmad
AI Integration Specialist, RAG and LangChain Expert
- FromPakistan
- Member sinceMay 2022
- Avg. response time1 hour
- Last delivery1 month
Languages
Urdu, English
My Portfolio
FAQ
What platforms do you use to build the voice agents?
I primarily build and deploy high-performance voice agents using Vapi AI and Retell AI, integrated with LLMs like OpenAI GPT or Claude via smart prompt engineering. Depending on your needs, I can also work with Bland AI.
Do I need to pay for call minutes and phone numbers separately?
Yes. You will need to maintain your own active accounts on Vapi/Retell and hook them up with a telephony provider like Twilio or Telnyx to purchase phone numbers and fund your talk-time minutes directly.
Can the voice agent book appointments directly into my calendar?
Absolutely! In the Standard and Premium packages, I integrate the voice agent with Calendly or Google Calendar using Make.com. The AI will live-check your open slots during the call and log the booking instantly.
Will the voice agent sound laggy or robotic?
Not at all. By combining Vapi/Retell with ultra-low latency conversational pipelines and fast LLM providers (like Groq), the response lag is kept under 1 second, making the conversation feel incredibly fluid and human-like.
What do I need to provide to get started?
You will need to provide your business call workflow or script (how you want the bot to greet and route clients) and access to your Vapi/Retell, Twilio, and CRM/Calendar platforms when we begin development.

