According to the firm's blog, Knewton has raised $51 million led by Atomico. GSV also participated along with existing investors Accel Partners, Bessemer Venture Partners, First Round Capital, FirstMark Capital, and Founders Fund-- along with debt financing by Silicon Valley Bank.

Knewton is the world's leading adaptive learning company. Knewton partners with pioneering learning companies, publishers, content providers, and educational institutions to enable personalization at massive scale.