What is QuillBot?
QuillBot is an AI writing assistant best known for its paraphraser, now bundled with a grammar checker, plagiarism checker, AI detector, humanizer, summarizer, translator and citation generator. It serves students, researchers and professionals, and runs in the browser, a Chrome extension, a Word add-in and mobile keyboards.
Rewriting a paragraph, fixing grammar, checking originality and formatting citations usually means juggling several sites. QuillBot puts those jobs in one workspace and follows you into the places you already write, such as Chrome, Microsoft Word and your phone keyboard. The free plan covers light use, while Premium removes word limits and adds more rewriting modes and deeper grammar suggestions.
Main Features
- Paraphraser that rewrites sentences and paragraphs, with 2 modes free and 10+ modes plus custom modes on Premium.
- Grammar Checker that fixes spelling and grammar, with advanced clarity and passive-voice suggestions on Premium.
- Plagiarism Checker that scans your text and flags missed citations in 100+ languages.
- AI Detector for text and a separate AI Image Detector for generated pictures.
- AI Humanizer that rewrites text to sound more natural.
- Summarizer, Translator and Citation Generator for research and study work.
- AI Chat, Image Generator, Presentation Creator and PDF tools such as ChatPDF, merge and split.
- Apps for Chrome, Edge, macOS, Microsoft Word, and Android and iOS keyboards.
How to Get Started with QuillBot
- Open quillbot.com and paste, type or upload your text.
- Pick a tool such as Paraphraser or Grammar Checker and review the suggested changes.
- Install the Chrome extension or Word add-in to get suggestions where you write.
- Sign up and upgrade to Premium if you hit the free word limits.
QuillBot Pricing
The Free plan lets you paraphrase up to 125 words in 2 modes, fix basic grammar and use a limited AI Detector. Premium costs $8.33 a month billed annually, and a Team plan adds admin tools and centralized billing.
Who Should Use It?
- Students rewriting and checking essays and assignments.
- Researchers summarizing papers and generating citations.
- Bloggers and content writers polishing drafts.
- Professionals cleaning up emails and reports in Word or Chrome.
- Non-native English writers who want clearer phrasing.
QuillBot Alternatives
- LanguageTool AI: stronger focus on multilingual grammar and style checking
- Paperpal: tailored to academic manuscripts and journal submissions
- Copyleaks AI: dedicated plagiarism and AI content detection platform
Frequently Asked Questions
Is QuillBot free?
Yes, with limits. Free users can paraphrase up to 125 words at a time in 2 modes, fix basic grammar, humanize short passages and use a limited AI Detector. Premium, from $8.33 a month billed annually, removes those caps.
What can QuillBot do besides paraphrasing?
QuillBot also checks grammar and plagiarism, detects AI-written text and images, humanizes text, summarizes, translates and builds citations. Newer tools include AI Chat, an image generator, a presentation creator and PDF utilities such as ChatPDF.
Does QuillBot work in Word and on mobile?
Yes. QuillBot offers a Microsoft Word add-in, Chrome and Edge extensions, a macOS app, and Android and iOS apps that include a keyboard, so you can get suggestions outside the website. Limits may vary across platforms.