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Case file 06 · AI / Agentic System

Voice AI Sales Agent

Proof of Concept
The problem

Sales teams burn hours on outbound calls that mostly go nowhere. The client wanted to reach far more leads without hiring more people — without it sounding like a robot reading a script.

Type
AI / Agentic System
Tech Stack
LangGraphPGVectorOpenAIFastAPIPostgreSQLTwilioDeepgram TTSElevenLabs STT
How we solved it

What we built

01

Built a voice AI agent that makes and handles real outbound sales calls on its own, over Twilio.

02

Used Deepgram for near-instant speech recognition, so the agent responds without awkward pauses.

03

Used ElevenLabs for natural-sounding speech, custom-tuned so it doesn't read punctuation out loud like a machine.

04

Gave it a GPT-4o-mini reasoning loop trained on sales conversations — handling objections and qualifying leads in real time.

05

Built the full listen → think → speak pipeline as one low-latency loop, so conversations feel real, not delayed.

Result

The outcome

Delivered as a proof-of-concept system handling outbound sales calls autonomously — cutting the manual call load on the sales team from day one.

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