Product Teardown · Consumer EdTech · September 2026

Duolingo won the AI-first bet on usage. It's still losing the AI-first bet on trust.

DAU is up 23% and revenue crossed $1B for the first time, right as the same AI strategy that unlocked that growth handed ChatGPT, Claude, and a $1B-valued rival named Speak the exact thing Duolingo used to own alone.