QuillBot is an artificial intelligence-powered writing and paraphrasing tool designed to rewrite text-based content. The product was originally released in 2017 by Rohan Gupta, Anil Jason, and David Silin, and is now owned and developed by Course Hero.[1] QuillBot offers various features, including rewriting modes, grammar checks, and summarization capabilities.[2]
While there is ongoing debate as to whether or not QuillBot aids in plagiarism, its application as a tool to help students has also been researched and proposed.[3][4]
A 2021 study found QuillBot useful for paraphrasing and balancing text change and meaning but stressed the importance of English proficiency for its best use. The research also acknowledged the increasing role of AI tools in academic writing but noted they are not a replacement for having a strong foundation in a language.[5] The Grainger College of Engineering also acknowledged similar use cases.[6]
In a 2023 review for makeuseof.com, UmmeAimon Shabbir wrote that the tool's definition of paraphrasing may result in random synonym selection, leading to inaccuracies and a degradation in the quality of writing.[7] Content creator Zulie Rane had the same conclusion in a 2023 review for Business Insider.[8]
QuillBot's developers say it has 10 million monthly active users. Many of these users only engage with its free products, while some opt for the premium subscription. Quillbot was acquired by Course Hero in August 2023, following a $4.25 million seed funding round.[1][9]
The founders, Rohan Gupta, Anil Jason, and David Silin, were included in the Forbes 30 under 30 North America list in 2022.[10][11]