Duolingo Raises $45 Million Series D Round Led By Google Capital, Now Valued At $470M

Duolingo, the free language learning service co-founded by reCAPTCHA inventor Luis von Ahn, today announced that it has raised a $45 million investment round led by Google Capital. The company’s previous investors, which include the likes of Union Square Ventures, NEA and Kleiner Perkins Caufield & Byers, as well as Ashton Kutcher and Tim Ferris, also participated in this round.
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