I will build a low latency voice ai agent using vapi


About this gig
Your customers hate waiting on hold, and they despise robotic, unresponsive IVR menus. I build production-grade Real-Time Voice AI Agents that answer instantly, understand complex context, and speak with natural human intonation.
Using Vapi.ai (or Retell) and Twilio telephony, I engineer voice infrastructure optimized for speed and realism.
Technical Differentiators:
- Sub-Second Latency: Optimizing "Time to First Byte" so the AI responds without unnatural pauses.
- Absolute Interruptibility: Configuring precise "barge-in" logic. If the user talks over the AI, it stops speaking instantly to listen.
- Glass Box Sovereignty: You own the phone numbers, the transcripts, and the telephony infrastructure.
Transform your customer support or lead qualification securely.
IMPORTANT: Voice AI requires careful prompt engineering. Please CONTACT ME before ordering so we can discuss your call scripts and set up a Milestone plan.
Get to know Asad Javed
Fractional CTO and Lead Architect specializing in Nextjs SaaS JAMStack and AI
- FromUnited Kingdom
- Member sinceFeb 2021
- Avg. response time1 hour
- Last delivery1 year
Languages
English, German, French, Spanish
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FAQ
Can the user interrupt the AI?
Yes, I configure "barge-in" capabilities. If the customer speaks while the AI is talking, the AI stops immediately, mimicking natural human conversation.
Do I pay per minute?
You will pay the direct usage costs to Vapi/Retell and Twilio (usually a few cents per minute) via your own sovereign accounts.
Can it book appointments?
Yes, via custom milestones, I can equip the agent with "tool calling" to check your calendar API and book slots mid-call.

