Learn new languages in video calls with AI characters

Zielgruppe

Students, educators, language learners

Herausforderung

Traditional language learning lacked real conversation practice. Learners need immersive experiences to build speaking confidence, but scripted conversations were limited. Duolingo needed the ability to converse with learners about specific topics rather than just generic scenarios like ordering food.

Lösungsansatz

Duolingo partnered with OpenAI to integrate GPT-4 into Video Call and Roleplay features. Human curriculum experts write scenarios and backstories, then train the AI model. The system uses deep learning to optimize lesson sequencing through 'spaced repetition.'

Mehrwert

The AI-powered approach enabled Duolingo to create 148 new language courses in one year — effectively doubling their content library (compared to 12 years for their first 100 courses).