How Cem Kansu helped Duolingo scale monetization without breaking freemium

Duolingo exemplifies a successful freemium model by maintaining a robust free experience that fuels growth while generating substantial revenue through subscriptions. Former VP of Product Cem Kansu highlights the company's philosophy of protecting the free offering, even at the cost of short-term revenue gains, as this strategy differentiates Duolingo from competitors and strengthens its growth engine. The company treats free users as integral to its distribution channel, fostering word-of-mouth promotion by maintaining a delightful user experience. Duolingo strategically integrates ads without compromising the core learning experience, using them to reinforce brand identity and fund free education. The company's approach to experimentation emphasizes long-term goals over short-term metrics, with decisions based on aligning with Duolingo's enduring vision rather than immediate data points. This inclusive strategy, which caters to diverse user motivations without rigid personas, has enabled Duolingo to scale to millions of users while sustaining trust and growth.