Duolingo
Adaptive Spaced Repetition Algorithms, Language Learning ML, and GenAI Tutoring
Datacenter & Compute Infrastructure
Amazon Web Services (AWS) cloud infrastructure paired with OpenAI API integrations and internal machine learning pipelines processing 1+ billion exercises daily.
Duolingo operates the world’s most downloaded educational platform, serving over 100 million monthly active users across 40+ language tracks. Founded by Luis von Ahn and Severin Hacker, Duolingo uses Birdbrain spaced-repetition models and OpenAI foundation models for interactive conversation practice.