FILED - 28 February 2025, Saxony-Anhalt, Wernigerode: A person looks at a computer screen in Wernigerode. Language learning app Duolingo is placing artificial intelligence at the centre of its operations, with founder and chief executive Luis von Ahn calling the company's recent decision to use AI in developing learning content "one of the best" it has made in years. Photo: Matthias Bein/dpa
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