
Duolingo, AI in how it builds its courses
Duolingo invested in AI tools that change how fast it can create content. In Q1 2026 it published 20,500 course units, up from 7,100 a quarter in 2025 and 1,800 a quarter in 2024, and it can now push changes across many courses at once. Daily active users reached 56.5 million, up 21% on a year earlier. It kept its direction, teaching languages, and changed how the work gets done each time the tools got better.⁴
