QuillBot
AI paraphraser, grammar checker and summarizer for students, writers
QuillBot is a aI writing tool for Creators and Freelancers, offered as freemium ($20/mo). Founded in United States in 2017. Popular alternatives include LanguageTool.
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.
| Plan | Price | Includes |
|---|---|---|
| Free | $0 | 125-word paraphrases, 2 modes, no plagiarism checker |
| Premium | $19.95 / mo | $99.95/yr ($8.33/mo) billed annually; unlimited paraphrasing |
| Team | Custom | Per-seat volume pricing for 2+ users |
Source: quillbot.com · checked on Oct 20, 2026
How QuillBot compares in AI writing
- Rank by votes
- #1 / 18
- Starting price
- $20
- Free alternatives
- 0
0 votes from members
17% below the category median ($24/mo)
Free or open-source tools in AI writing
QuillBot ranks #1 of 18 ai writing tools by community votes and is priced below most tools in the category.
Common use cases
- 1Rewording a draft paragraph to sound more formal or concise
- 2Summarizing long articles or reports into key points
- 3Checking an essay for grammar and plagiarism before submission
- 4Generating APA or MLA citations for a reference list
- 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 a 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.
- 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.
Alternatives to QuillBot
LanguageTool
▲ 0Multilingual grammar, spelling and style checker for 30+ languages
Freemium · $25FreelancersCreators
More AI writing tools
Reviews
No reviews yet. Be the first to share real experience.
Sign in to write a review.