QuillBot, a startup developing AI tools that intelligently rewrite text, today announced that it raised $4 million in financing. Fresh capital in hand, the cofounders hope to make QuillBot's platform a one-stop editing shop, with modules that will summarize information from articles and complete paragraphs by synthesizing sentences informed by intent. QuillBot also plans to establish an R&D lab to conduct and publish AI and machine learning work, with an emphasis on natural language processing (NLP). QuillBot is the brainchild of the University of Illinois (UIUC) dropout Anil Jason and 2017 alums Rohan Gupta and David Silin. Jason and Silin collaborated on a senior thesis project involving a system that, given an article, generated multiple-choice questions about the content of that article.