# QuillBot

> QuillBot is a Learneo-owned AI writing and creation platform that began as a paraphraser for English language learners. It combines rewriting, grammar correction, summarization, citations, translation, and originality checks with newer chat and visual creation tools, sold through free access, Premium subscriptions, and team plans.

- **Founded:** 2017
- **Headquarters:** Chicago, United States
- **Founders:** Anil Jason (Co-founder; founding CTO), David Silin (Co-founder; founding CSO), Rohan Gupta (Co-founder; former CEO)
- **Products:** Paraphraser, Grammar Checker, Summarizer, Citation Generator, Plagiarism Checker
- **Notable:** Reached one million users in 2019 according to company history., Acquired by Course Hero in August 2021., Currently reports 35+ million monthly active writers and 5.3 billion annual Paraphraser inputs.

## Products & services

- **Paraphraser** — Rewrites supplied text with selectable styles, a synonym slider, and word-level alternatives.
- **Grammar Checker** — Checks grammar, spelling, and punctuation; Premium adds advanced recommendations.
- **Summarizer** — Condenses articles and documents into shorter summaries and key points.
- **Citation Generator** — Formats references for books, websites, and articles in over 1,000 citation styles.
- **Plagiarism Checker** — Checks textual overlap and supplies reports; Premium includes a monthly word allowance.
- **Translator** — Translates text across more than 50 languages on the current product page.
- **AI Detector** — Estimates whether text may be AI generated; results require human interpretation.
- **AI Humanizer** — Reworks text to sound more natural; does not establish authorship or permission.
- **AI Chat and creation tools** — Conversation, image generation, design, document, presentation, and PDF tools broaden the original writing suite.

## Achievements

- Reached one million users in 2019 according to company history.
- Acquired by Course Hero in August 2021.
- Currently reports 35+ million monthly active writers and 5.3 billion annual Paraphraser inputs.

## Latest updates

- **—** — Company history describes expansion beyond writing into audio, image, and search tools under CEO Andrew Grauer.
- **2026-10** — Current website presents chat, design, document, presentation, image, and PDF tools alongside its writing suite; observation date, not a claimed launch date.

## Links

- Website: https://quillbot.com/
- LinkedIn: https://www.linkedin.com/company/quillbot/
- Twitter/X: https://x.com/thequillbot
- YouTube: https://www.youtube.com/@quillbot
- Instagram: https://www.instagram.com/quillbot/
- Facebook: https://www.facebook.com/thequillbot/

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Profile page: https://yespress.io/quillbot
Published by YesPress — https://yespress.io
Last updated: 2026-10-01