Alex Frenkel | Kai.ai | How Do You Combine a Human Team and AI to Support Mental Health?

Description

Alex Frenkel, co-founder of Kai.ai and a former clinical psychologist, talks about building an emotional-support platform that combines a human clinical team with conversational AI. Kai is a proactive contact on WhatsApp (or Discord, Telegram and iMessage) that remembers the user, initiates check-ins and practices tools from the therapeutic world with them. Alex describes viral growth to 80 thousand monthly active users, mostly Gen Z, the wall where the consumer freemium model simply didn't work, and the double pivot to a hybrid service sold to organizations. He explains how they measure success with the WHO-5 index and usage data, why they use a collection of models instead of one, which ethical decisions they made around privacy and separating AI from humans, and how the war brought Kai to Hebrew and to IDF reservists. Finally, he shares what he thinks makes a good product person: not inventing features, but knowing how to remove them.

Key moments

1. 0:00 · Intro, what Kai.ai is, and the move to Hebrew after October 7
2. 5:32 · Measuring success: WHO-5, engagement and retention
3. 11:57 · From clinical psychologist to founder: how Kai started
4. 15:32 · Human in the loop and a collection of models instead of one
5. 18:03 · B2C growth, Discord, and why Gen Z
6. 25:14 · The double pivot: a hybrid service and B2B2C
7. 33:39 · Ethics, privacy and separating AI from humans
8. 50:37 · Product skills: knowing how to remove features
9. 54:56 · Competitors: Headspace, Calm, Woebot and Wysa
10. 59:19 · Plans ahead and the vision: beyond crisis, toward personal growth