HO CHI MINH CITY -- Top language app Duolingo is turning to ChatGPT technology and icons like K-Pop group Blackpink to take on rivals in Southeast Asia, home to some of its fastest-growing user bases.
World's most-used language app enjoys record growth in Vietnam, Indonesia

Haina Xiang, a Duolingo marketing director, says the company is studying the attributes of regional rivals, like Vietnamese app Elsa's strength in spoken language. (Photo by Lien Hoang)
HO CHI MINH CITY -- Top language app Duolingo is turning to ChatGPT technology and icons like K-Pop group Blackpink to take on rivals in Southeast Asia, home to some of its fastest-growing user bases.