Luis von Ahn
AI LeaderCEO & Co-Founder @ Duolingo
Pittsburgh, PA
CEO and co-founder of Duolingo. CS professor at Carnegie Mellon who created CAPTCHA and reCAPTCHA. Led Duolingo's AI-first strategy including Duolingo Max with GPT-4 powered Explain My Answer and Roleplay features.
Tools & expertise
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Computers vs. humans: Who wins in chess?
From hidden humans to supercomputers, here’s how chess engines took over.
Politicians and professors are learning languages—and here's why
They came for the XP—and stayed for the connection, confidence, and fun.
Research report: Video Call with Falstaff improves beginners’ conversation skills
New to speaking? Video Call with Falstaff helps beginners find their voice!
How I spent my 2-month paid sabbatical
Inside Duolingo’s tech culture and 2-month paid sabbatical benefit.
What you can do with a Duolingo Score of 60
What’s a Score of 60? Basically, your passport to real conversations.
New mini-units make intermediate learning more engaging and effective
Bite-sized learning has never felt more satisfying!
Dear Duolingo: Why do some languages have gender?
Why are nouns classified as “male” and “female” in some languages? Here’s the answer!
What are the rules for “wh” questions in English?
Who, what, where, when, why—and *how* do you form “wh” questions in English?
What are tag questions and how do you use them?
There’s a lot to know when it comes to English tag questions, *isn’t there?*
How to form yes or no questions in English
Do you know how to form yes/no questions in English? Either way, this post is for you!
Content & resources
Notable quotes
"AI is the biggest thing to happen to language learning since the internet. With Duolingo Max, every learner gets a conversation partner and personal tutor."
— DuoCon / press interviews