Catheryn Li

Catheryn Li is the co-founder and CEO of Simple AI, a San Francisco voice-AI startup building phone agents that sell. After four years at Y Combinator - where she led the software team behind Startup School, the YC Library, and Co-Founder Matching - she and Zach Kamran started Simple AI in the 2024 YC batch. Their agents are trained on top human reps, know every product SKU, and the company says they outperform trained live reps by 30% on conversion and upsell. Simple AI raised a $14M seed round led by First Harmonic with Y Combinator, True Ventures, and Massive Tech Ventures. Li holds degrees in computer science and mathematics from MIT.