Duolingo, Inc.

Duolingo, Inc. (NASDAQ: DUOL) operates as a technology-driven education platform with a mission to develop the best education in the world and make it universally available. The company's website is www.duolingo.com.

The flagship Duolingo App serves as the world's most popular language learning platform, offering over 250 language courses to more than 130 million monthly active users as of December 31, 2025. The app operates on a freemium model, allowing users to access all learning content without payment while generating revenue through optional paid subscriptions and advertisements. The company has expanded beyond language learning to include Math, Music, and Chess courses, all integrated into the main application.

Duolingo's core products include Super Duolingo and Duolingo Max subscription tiers that provide ad-free experiences and premium features powered by artificial intelligence. The Duolingo English Test, launched in 2016, represents a significant complementary offering, providing online English proficiency assessments accepted by over 6,100 education programs worldwide, including all Ivy League institutions and 24 of the top 25 undergraduate programs in the United States by international enrollment. The company also offers Duolingo for Schools, a web-based tool for classroom integration, and Duolingo ABC, an app targeting early literacy for young children.

As of December 31, 2025, Duolingo employed more than 900 people, including over 430 engineers. The platform processes nearly two billion exercises daily, creating what the company describes as the world's largest learning dataset. This data foundation enables sophisticated artificial intelligence and machine learning capabilities that personalize instruction and drive product innovation.

The company's competitive differentiation stems from two reinforcing flywheels: a learning flywheel that improves engagement and efficacy through data-driven experimentation, and an investment flywheel that channels user scale and word-of-mouth growth into product innovation rather than expensive marketing. Approximately nine percent of monthly active users maintained paid subscriptions as of December 31, 2025. The company's brand has achieved significant cultural prominence, becoming synonymous with language learning and generating substantial organic user acquisition through word-of-mouth and social media virality.