Duolingo launches 148 courses created with AI after sharing plans to replace contractors with AI

1. Duolingo launches 148 new AI-generated language courses, doubling current offerings. 2. Shift to AI faces backlash from users concerned about content quality. 3. CEO claims AI allows for unprecedented content scaling and faster launches. 4. New courses target beginner levels with features like Stories and DuoRadio. 5. Continued user discontent could impact app retention and engagement.