Happy Valley

QuillBot

AI paraphraser, grammar checker and summarizer for students, writers

Freemium · $20AI writing

QuillBot is an AI writing tool for Creators and Freelancers, offered as freemium ($20/mo). Based in United States, founded in 2017. Popular alternatives include LanguageTool, Gamma, Willow.

About QuillBot

QuillBot is a browser-based writing toolkit best known for its AI paraphraser, which rewrites a sentence or paragraph in a chosen tone while keeping the meaning. It was started in 2017 by three University of Illinois computer science students, raised a seed round from Sierra Ventures and GSV in 2020 and was acquired in 2021 by Course Hero, now Learneo, the group that also owns LanguageTool and Scribbr.

Around the paraphraser sit a grammar checker, summarizer, AI detector, AI humanizer, plagiarism checker, citation generator, translator and an AI chat. The free plan caps paraphrasing at 125 words with two modes (Standard and Fluency) and leaves out plagiarism checks. Premium removes the word limit, unlocks the remaining modes such as Formal, Academic, Simple, Creative, Expand, Shorten and a Custom mode, and adds a monthly plagiarism allowance.

QuillBot fits students, non-native English writers and content teams who need to rephrase, shorten or tidy text quickly. It is weaker as a full writing assistant: Grammarly gives deeper style and tone feedback across apps, Wordtune is comparable for rewrites but lighter on study tools, and Jasper is built for marketing copy generation rather than rewording. Universities may also treat heavy paraphrasing as misconduct.

Buying tip: the annual Premium plan works out to about $8.33 a month versus $19.95 month to month, so it only makes sense to pay monthly for a single deadline. Team accounts are quoted per seat with volume discounts, which suits schools and content agencies.

Key features of QuillBot

  • Paraphraser with Standard, Fluency, Formal, Academic, Creative and Custom modes
  • Synonym slider to control how aggressively words are replaced
  • Grammar checker with one-click fixes for spelling and punctuation
  • Summarizer that outputs key sentences or a paragraph summary
  • AI detector and AI humanizer for checking and reworking generated text
  • Plagiarism checker with a monthly page allowance on Premium
  • Citation generator for APA, MLA and Chicago styles
  • Browser extensions plus Word add-in and desktop apps

Pros and cons

Pros

  • Paraphraser output is fast and keeps meaning better than most free rewriters
  • Free tier is usable for short rewrites without an account
  • Many tools (summarizer, citations, translator) bundled in one subscription
  • Annual Premium is cheaper than Grammarly Pro
  • Works inside Chrome, Word and Google Docs via extensions

Cons

  • 125-word free limit makes longer texts tedious
  • Paraphrasing can drift in meaning on technical or legal text
  • Monthly billing is more than double the annual rate
  • Strongest in English; other languages are less polished
  • Heavy use for coursework can breach academic integrity policies

QuillBot pricing

QuillBot uses a freemium model.

PlanPriceIncludes
Free$0125-word paraphrases, 2 modes, no plagiarism checker
Premium$19.95 / mo$99.95/yr ($8.33/mo) billed annually; unlimited paraphrasing
TeamCustomPer-seat volume pricing for 2+ users

Source: quillbot.com · checked on Oct 20, 2026

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How QuillBot compares in AI writing

Rank by votes
#1 / 23

0 votes from members

Starting price
$20

9% below the category median ($22/mo)

Free alternatives
1

Free or open-source tools in AI writing

QuillBot ranks #1 of 23 ai writing tools by community votes and is priced in line with the category.

Common use cases

  1. 1Rewording a draft paragraph to sound more formal or concise
  2. 2Summarizing long articles or reports into key points
  3. 3Checking an essay for grammar and plagiarism before submission
  4. 4Generating APA or MLA citations for a reference list
  5. 5Simplifying technical copy for a non-expert audience

Best for

Students and non-native English writers who mostly need quick rewording, summaries and citations at a low annual price.

Not ideal for

Teams that want in-depth style guidance, brand voice rules or long-form AI drafting (Grammarly, Jasper).

Integrations

  • Google Chrome
  • Microsoft Edge
  • Safari
  • Microsoft Word
  • Google Docs
  • Gmail

Our take

QuillBot is the most practical paraphrasing tool for everyday rewriting and study work. Use the free tier for short edits and buy the annual Premium plan only if you rewrite or check plagiarism every week; for broader writing feedback Grammarly is the better spend.

FAQ

What is QuillBot?
QuillBot is an AI writing tool: AI paraphraser, grammar checker and summarizer for students, writers.
How much does QuillBot cost?
QuillBot uses a Freemium model; paid plans start at $20 per month.
What are the best alternatives to QuillBot?
Community-listed alternatives to QuillBot include LanguageTool, Gamma, Willow, Openbroca.
What does QuillBot integrate with?
QuillBot integrates with Google Chrome, Microsoft Edge, Safari, Microsoft Word, Google Docs, Gmail and more.
Which platforms does QuillBot support?
QuillBot is available on web, macos, windows, ios, android.
Who is QuillBot for?
Students and non-native English writers who mostly need quick rewording, summaries and citations at a low annual price.

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