Duolingo
Duolingo is the world's most popular language learning platform, using AI and gamification to teach over 40 languages to more than 100 million monthly active users. Its AI-powered features include adaptive lesson difficulty, conversational practice with AI chatbots, and personalized review sessions. As a publicly traded company (NASDAQ: DUOL), Duolingo represents a high-growth intersection of edtech and artificial intelligence in the consumer subscription market.