Critics of the DET say you get what you pay for. They argue that Duolingo’s test, with its focus on word- and sentence-level tasks and paragraph-length writing and speaking prompts, should not be ...

PITTSBURGH - Duolingo Inc. (NASDAQ: NASDAQ:DUOL), the company behind the widely-used language learning app, has expanded its AI-driven conversation feature, Video Call, to Android users and added ...

The Duolingo chatbot for on-demand language conversation practice is available Thursday in Duolingo’s iOS app. Currently, the bots are available for English speakers to practice conversation in ...

Existing certification programs, such as the Test of English as a Foreign Language, can cost hundreds of dollars. Duolingo's will cost $20.