Google acquired DNNresearch, the company Geoffrey Hinton had incorporated in 2012 with his University of Toronto graduate students Alex Krizhevsky and Ilya Sutskever; terms were not disclosed. The three were the people who had dramatically raised the state of the art in object recognition with convolutional neural networks at the previous year's ImageNet competition, and Google took in both the research and the talent behind it. Krizhevsky and Sutskever joined Google, while Hinton split his time between the university and the company. Google bought the company built around the researchers rather than rights to the research itself. Sutskever left Google in 2015 to co-found OpenAI.