Luis von Ahn

Tech entrepreneur and crowdsourcing pioneer Luis von Ahn is best known for creating CAPTCHAs and the language-learning platform Duolingo.

Luis von Ahn is an entrepreneur and computer science professor at Carnegie Mellon University who is considered one of the pioneers of crowdsourcing. He is known for co-inventing CAPTCHAs, being a MacArthur Fellow and selling two companies to Google in his 20s. 

He has been named one of the 10 Most Brilliant Scientists by Popular Science Magazine, one of the 50 Best Brains in Science by Discover, one of the Top Young Innovators Under 35 by MIT Technology Review, and one of the 100 Most Innovative People in Business by Fast Company Magazine.

Von Ahn is currently the co-founder and CEO of Duolingo, a language-learning platform created to bring free language education to the world. With over 150 million users, it is now the most popular language learning platform and the most downloaded app in the Education category worldwide on both iTunes and Google Play.