Pingo AI is a Y Combinator S25 startup building an AI companion that helps people learn languages through immersive conversation practice with an AI tutor that sounds like a native speaker. Launched in early 2025, the app reported strong early traction with over 300,000 users and roughly $200K in monthly recurring revenue by mid-2025. The company is backed by Y Combinator and other early-stage investors. Pingo AI is based in San Francisco.