back_office_ops · workflow
Duolingo uses LLMs to speed up language lesson exercise creation
Creating, updating, and maintaining Duolingo courses takes considerable time, limiting most courses to releasing new content only a few times per year — a constraint for a lean team tasked with delivering world-class education at global scale.
How it works
Common implementation structure
How this type of workflow is generally built, generalized across documented cases — not tied to any one vendor's stack. Click any stage to read what happens there. Specific products that implement these stages appear in “Tools commonly seen” below.
Stage 1 · Curriculum planning
A learning designer plans the topic, grammar, and exercise types for the lesson.
Tools used
LLMBirdbrain
Outcome
LLMs now generate ten exercise candidates in seconds for a given difficulty, grammar, and topic; learning designers select two and edit them before app publication, with Duolingo's pedagogy experts holding final authority.
Results
Volume10
Grounding & classification
Source type: technical build writeup
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