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Meet our founders.

Luis von Ahn, CEO

Luis von Ahn is a professor at Carnegie Mellon University, the inventor of CAPTCHAs, and a MacArthur Fellow. He has sold two companies to Google and given popular TED talks.

Severin Hacker, CTO

Severin Hacker received a BS in Computer Science from ETH Zurich in 2006 and a PhD from Carnegie Mellon University in 2014.

About Duolingo

Duolingo is the free science-based language education platform that has organically become the most popular way to learn languages online.

Exercises completed each month

7B+

Total users

300M+