My guest today is Cem Kansu. Cem is the Head of Product at Duolingo. Over 8 years, he helped Duolingo grow to 100M+ monthly active users and $500M+ in annual revenue. I had a super fun chat with Cem about Duolingo's unhinged product culture, the top drivers of Duolingo's user and revenue growth, and whether AI will democratize education. Timestamps: (00:00) We love being unhinged with our owl (01:26) Duolingo is a game and this is our core loop (03:46) The top 3 drivers of Duolingo's growth to 100M users (05:55) Passive-aggressive push notifications work! (08:12) How Duolingo onboards new users to maximize retention (13:11) Our winding path to $500M+ in revenue (17:25) We've figured out how international expansion works (21:13) Will AI kill Duolingo? (26:20) We made Lily an AI emo teenager on purpose (32:41) How to A/B test without sacrificing quality (37:09) What the best PMs at Duolingo have in common Get the takeaways: https://creatoreconomy.so/p/inside-duolingo-unhinged-growth-to-500m-cem-kansu Where to find Cem: X: https://x.com/cemkansu LinkedIn: https://www.linkedin.com/in/cemkansu/ 📌 Subscribe to this channel – more interviews coming soon!