QuillBot

QuillBot is a set of small writing tools in one place. Paste a sentence or paragraph and it rewords it in the style you pick (formal, simple, shorter, more fluent), fixes grammar and spelling, summarises long text into key points, generates citations and checks for plagiarism. It also has an AI detector and a "humaniser" that rewrites AI-sounding text, and it works inside Chrome, Word and Google Docs.

It is quicker than a chat assistant when you just want one paragraph tightened or said another way: no prompt to write, just paste and click. If you need a whole draft written or a document reasoned through, Claude or ChatGPT do far more. QuillBot is owned by Learneo, the company behind Course Hero, and most of its users are students and people writing in their second language.

The catch: the free plan stops at 125 words per paraphrase, its AI detector and humaniser give inconsistent results (QuillBot itself says not to rely on detection alone), and reworded text can drift from what you meant. Read every rewrite before you send it.

• Students
• Non-native English writers
• Academics
• Freelance writers
• Office staff

Students, non-native English writers and anyone who wants a paragraph cleaned up or reworded in one click.

• Paraphraser

  Rewords text in modes like Standard, Fluency, Formal, Simple, Shorter and Creative, or a custom style you describe.

• Grammar checker

  Fixes spelling, grammar and punctuation as you type, with tone suggestions on Premium.

• Summariser

  Turns a long article or reading into key-point bullets or a short paragraph.

• AI detector and humaniser

  Scores how AI-written text looks and rewrites it to sound more natural. Results vary, so treat both as a guide only.

• Plagiarism checker and citations

  Checks your work against published sources and builds references in APA, MLA and other styles.

• Works where you write

  Chrome extension, Word add-in, desktop and mobile apps, so you don't have to copy text back and forth.

• Free

  Free

  Odd sentences and quick grammar checks.

  • Paraphraser up to 125 words at a time, two modes
  • Grammar checker and summariser
  • Humaniser up to 125 words, a few times a day
• Our pick

  Premium

  $19.95/mo, or $99.95/yr ($8.33/mo)

  Anyone rewording or checking text most weeks.

  • Unlimited paraphrasing and all modes, plus custom styles
  • Plagiarism checks up to 25,000 words a month
  • Unlimited AI detector and humaniser
  • 6,000-word summaries

• Team

  Per seat, billed yearly

  Schools and companies buying for a group.

  • Everything in Premium for each person
  • Central billing and user management
  • Usage reports and data controls

Prices in USD unless noted, checked 21 October 2026. Vendors change plans often, so confirm on their site before you buy.

Ways QuillBot can slot into your week.

1. 1

   Tidy a client email

   Paste a rushed email, switch to Formal mode and get a cleaner version in seconds, then fix any wording that changed your meaning.

2. 2

   Write in your second language

   Draft in plain English as best you can and let the Fluency mode and grammar checker smooth it into natural phrasing.

3. 3

   Summarise reading for a meeting

   Drop in a long report or article and get the key points as bullets before you walk in.

4. 4

   Say the same thing three ways

   Reword a product description or ad line in different modes to get variations for testing.

It sits on top of the tools you already write in: the Chrome extension works in Gmail and Google Docs, and there's a Word add-in. Use it next to a chat assistant, which writes the draft while QuillBot polishes sentences.

The closest alternatives to QuillBot in the library, best rated first.

• DeepL4.2/5· best for Translating Word, PowerPoint and PDF files with layout keptQuillBot vs DeepL
• Sudowrite3.6/5· best for outlining a novel from an ideaQuillBot vs Sudowrite

Nobody has reviewed QuillBot here yet. If you use it, your take helps everyone else choose.