The language learning platform, spun out from Carnegie Mellon University, increased its total funding to $108m with a series E led by Drive Capital that valued it at $700m.

Duolingo, a US-based language learning platform spun out of Carnegie Mellon University, has completed a $25m series E round led by venture capital firm Drive Capital that valued it at $700m.

Drive Capital is backed by Ohio State University, which put $50m into the firm’s $250m fund in 2013.

Formed in 2009, Duolingo publicly launched its language education platform two years later and has since accumulated more than 200 million users worldwide.

The company’s technology uses a gamification methodology…