From a dozen pivots to a billion voice calls
Key points
Key takeaways from Source interview with Vapi Co-founders Jordan Dearsley and Nikhil Gupta (September 2026):
A billion calls a year. Vapi, a platform for deploying voice agents, now serves roughly one billion voice-agent calls annually, automating phone calls for customers including Amazon, Uber, and Intuit.
Twelve pivots before product-market fit. The founders had built a friendship CRM, an investing app called Invest Better, and Superpowered, a meeting-join button that grew into meeting notes, before landing the voice AI platform pivot upon Y Combinator's winter 2021 batch.
Leaving a working business behind. Superpowered reached around $500,000 in revenue and 10,000 paying users, but founders, unsettled by its ambition ceiling, wound it down, refunded subscribers, moved from Toronto to San Francisco, and started over.
The therapist that proved voice AI. Jordan built an AI therapist he walked with for two hours a day, chasing natural-sounding real-time speech over GPT-4, and once their friend and angel investor Mo used it a dozen times a day, they knew voice companions had demand.
Hyperbound was the catalyst. The AI sales-roleplay startup, a winter 2023 batch company, became Vapi's first customer: they turned the therapy prototype into a production-grade real-time platform over a holiday sprint, and the platform business took off from there.
Inbound growth, now enterprise-led. Vapi did no marketing or sales: customers arrived inbound, at one point around 300 Slack support channels, with features shipped within five minutes of a request; its first enterprise customer brought procurement, SOC 2 compliance, a 40-page master services agreement, and two months of redlines, which taught the company enterprise sales, now most of the business.
A trillion-minute market, barely touched. There are roughly three trillion annual business-to-consumer phone minutes, of which Vapi currently serves 0.0134%, and even the largest telecoms run sub-1% of that volume; the founders' mission is to help every business build its human interface, seeing voice as the default interface and potentially the biggest upgrade to customer service ever.
The production gap is the moat. When OpenAI's speech models arrived before the company's Series A, customers stayed with Vapi: their A-players sit on deploying AI in the enterprise while labs focus on building it, and no customer was ever lost to a lab model — those who tried came back within months.
Co-founder survival kit. Early on the founders invested in an interpersonal-dynamics coach and non-violent communication training; their reset phrase, "Can you understand me?", defuses rows, and the NVC book, their "bible", goes to every employee.
Read more: YouTube
