Todd Li

Todd Li is the Co-Founder and President of Retell AI, a business-to-business artificial intelligence infrastructure startup based in the San Francisco Bay Area. He leads growth and operations for the Y Combinator-backed company, which develops AI-driven voice agents for enterprise phone calls. Under his leadership, the approximately 25-person startup secured a $4.6 million initial seed funding round from investors including Jack Altman's Alt Capital and achieved full profitability with $40 million in annualized revenue by November 2025. Prior to scaling the business, Li operated across multiple disciplines during the company's early stages, serving simultaneously as a technical developer, product marketer, and support engineer following its public launch on Hacker News and ProductHunt. His current focus centers on expanding Retell AI's overall commercial footprint and advancing its core voice infrastructure for complex enterprise applications.