AI-Powered Webinar Platform with Voice Sales Agents
Live and evergreen webinar platform where AI voice agents qualify attendees in real time, book demos and hand warm leads to humans.
The team ran 80 webinars per month but only 9% of attendees got a meaningful follow-up. SDRs were drowning.
Vapi prototypes sounded robotic on tricky objections and leaked buyer signals that the CRM never saw.
They needed a measurable lift in booked demos inside 60 days — without adding headcount.
Rebuilt the webinar runtime on Stream with low-latency branching: the agent joins the call as a first-class participant.
Designed a two-agent voice stack on Vapi: an empathetic qualifier and a booking specialist, with a supervised handover graph.
Wrote an evals harness with 412 real-call transcripts; every deploy ships a regression report to Slack.
Connected intents to the CRM so every buyer signal — price, timeline, tech stack — becomes a structured field, not a note.
31% lift in qualified leads vs. human SDRs in an A/B over 1,200+ webinars.
Meeting-booked rate on attendees went from 9% to 21%.
SDR team reallocated to closers, saving the equivalent of two headcount.
p95 turn latency under 680ms on live calls.
- Voice agent architecture and prompt library
- Eval harness and release gates
- CRM integration and signal taxonomy
- Privacy review with the client DPO