According to DeepLearning.AI, Duolingo leveraged generative AI to rapidly expand its language learning platform, adapting existing lessons into 28 new languages. This led to the production of 148 new beginner-level courses in under a year, more than doubling Duolingo's total course offerings. The use of generative AI significantly reduced development time and resource costs, allowing Duolingo to quickly respond to global market demands and open new business opportunities in untapped regions. This move demonstrates generative AI's practical application in scalable content creation and personalized education, positioning Duolingo as a leader in AI-driven edtech innovation (source: DeepLearning.AI, June 7, 2025).