companies
QuillBot
AI-powered paraphrasing, grammar-checking, and writing tool for students and professionals.

QuillBot was founded in 2017 by Rohan Gupta, Anil Jason, and David Silin, and built an AI-based paraphrasing tool that expanded into grammar checking, summarizing, plagiarism checking, and citation generation for students and professionals. QuillBot raised roughly $4.25M in seed funding from investors including Sierra Ventures and GSV Ventures before being acquired by Course Hero (later renamed Learneo) on August 19, 2021, joining a portfolio that also includes CliffsNotes and other study/productivity brands. QuillBot now operates as part of Learneo, headquartered in Redwood City/Chicago; specific current leadership and headcount are not independently disclosed post-acquisition.
- Founded
- 2017
- Headquarters
- Chicago, United States
- Sector
- applications
Tools
- QuillBot
QuillBot provides AI tools for paraphrasing, grammar checking, summarizing, translation, originality checks, and content creation.