Duolingo CEO on Reaching 1 Billion Users

Bloomberg TechnologyAbout 3 min readAug 7, 2025Watch original
THE SUMMARYAI-generated

Key Concepts

  • M&A (Mergers and Acquisitions) for growth
  • Expanding beyond language learning to broader education (math, music, chess)
  • 1 Billion users learning on their phones
  • Generative AI integration for content creation and conversational practice
  • Lily: AI conversational practice character
  • Efficiency through AI, not outsourcing
  • Addressing user insecurity in language learning with AI
  • Chess learning and future player vs. player games
  • Future expansion into science and physics

Duolingo's Vision and Expansion

Duolingo's vision extends beyond language learning to encompass a broader education offering. While known for language courses, the platform now includes math, music, and chess. The goal is to reach a billion users, providing them with valuable learning experiences on their phones, contrasting with "doomscrolling."

Growth and Daily Active Users (DAU)

Duolingo's daily active users (DAU) experienced a 40% year-over-year increase. While this is a substantial growth rate, it represents the "weakest rate of expansion since 2022." This is attributed to lapping quarters with even higher growth rates (60% year-over-year) in previous years. The expectation is for continued strong growth.

Generative AI Integration

Duolingo has embraced generative AI, both within its product and internally. The company views AI as essential for teaching, enabling the creation of more content and features like conversational practice.

AI and HR Incident

An internal AI initiative caused some controversy. The speaker acknowledges a failure to provide sufficient context when communicating the changes.

AI for Efficiency, Not Outsourcing

The goal of AI integration is to enhance efficiency, not to replace employees. Duolingo continues to hire. AI enables features like conversational practice with characters like Lily, addressing user reluctance to practice speaking with other humans due to insecurity.

Lily: AI Conversational Practice

Lily is an AI character designed for conversational practice. She is described as a "sarcastic and sassy teen." Lily helps users practice speaking without the fear of judgment, which is particularly beneficial for beginners.

Chess Learning

Chess learning on Duolingo focuses on teaching the basics. While currently lacking player-versus-player games, these are planned for the future. The approach differs from language learning, as chess is primarily about playing the game.

Future Subjects

Duolingo is open to expanding into other subjects like science and physics, but there are no immediate plans. The recent acquisition of Next Beat is related to Chess.

Reaching 1 Billion Users

The goal of reaching one billion users is expected to take several years. Duolingo is experiencing rapid growth in every country. The aim is to become the primary platform for learning languages, math, and music.

Notable Quotes

  • "The idea is to have a billion people are really learning useful things on their phone as opposed to doomscrolling."
  • "The goal here is not to outsource to A.I.. The goal is to use A.I. to be a lot more efficient."
  • "When you are just not very comfortable in the language, it's much better to talk to a computer at first."

Technical Terms

  • M&A: Mergers and Acquisitions
  • DAU: Daily Active Users
  • Generative AI: Artificial intelligence capable of generating new content (text, images, etc.)

Synthesis/Conclusion

Duolingo is strategically expanding its educational offerings beyond language learning, leveraging generative AI to enhance content creation, personalize learning experiences, and address user anxieties. While facing challenges in managing growth and internal AI initiatives, the company remains focused on its mission of making education accessible and engaging for a billion users worldwide.

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