Duolingo Launches 148 AI-Generated Language Courses, Doubles Offerings

Duolingo has launched its largest-ever expansion, unveiling 148 new language courses—more than doubling its offerings—enabled by a shift to a generative AI-driven development model. This update now allows users worldwide, including Francophones and speakers of 28 interface languages, to access popular languages such as Japanese, Korean, and Mandarin, which were previously unavailable to many. The rapid rollout was made possible through automation and a 'shared content' approach, although it has raised concerns about job losses among human contractors and the potential impact on content quality. Duolingo maintains that human experts still play a role in course design and review, focusing their expertise where it is most impactful. Investors have responded positively, with the company's share price rising 24% following the announcement, reflecting optimism about increased user engagement and future revenue growth. Despite this success, some remain cautious about the balance between speed, scalability, and educational quality as AI takes on a larger role.