QuillBot
AI writing suite built around a paraphraser, with grammar, plagiarism and AI detection, humanizing, summarizing and citations alongside.
What it does
QuillBot is an AI writing platform. Its core tool is the Paraphraser, and around it sit a grammar checker, an AI detector, a plagiarism checker, an AI Humanizer, a summarizer, a translator, a citation generator, AI Chat and an AI image generator. Work can be started from typed text, a paste, or an uploaded file, and Projects hold longer pieces. There is a Chrome extension so the tools follow you into other sites, and the vendor reports over 6 million users at a 4.7 rating.
How to use: Open quillbot.com and write, paste, or upload the text you want to work on — or start a Project for something longer. Pick the tool for the job from the toolbar: Paraphraser to rewrite, Grammar Checker to clean up, AI Detector or Plagiarism Checker to screen it, Humanizer to rework AI-drafted passages, Summarizer to condense, Citation Generator for references. Installing the Chrome extension puts the same tools inside the sites where you already write.
Core features
Best for
Pricing
FAQ
What is QuillBot's main tool?
The Paraphraser — QuillBot is built around rewriting text, with the other tools arranged around it.
Can I use QuillBot for free?
Yes. The tools are usable for free, and the Chrome extension is advertised as free to add; a Premium subscription lifts the limits.
Does QuillBot work outside its website?
Yes — QuillBot for Chrome brings the writing tools into other sites in your browser.
What can I start from?
You can write directly, paste text, upload a file, or open a Project for a longer piece of work.
Does it check for plagiarism and AI writing?
Both. QuillBot ships a Plagiarism Checker and a separate AI Detector, alongside the AI Humanizer.