AI Tools · Review · Updated 17 October 2026
QuillBot reviewAI paraphraser, grammar checker and writing toolkit for students and professionals
Excellent
Brent score, out of 5
QuillBot is a well-known AI writing toolkit built around its paraphraser, with a grammar checker, summarizer, AI detector, plagiarism checker, humanizer, translator and citation generator alongside. The free plan gives you two paraphrasing modes and no sign-up for basic use, while Premium unlocks Formal, Academic, Creative, Humanize and Custom modes. QuillBot only shows Premium prices after you create an account, so compare billing terms carefully at checkout.
Price
Free plan; Premium pricing shown at sign-up
Free option
Free plan
Best for
Students rewording notes and checking grammar and citations
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Best for
- Students rewording notes and checking grammar and citations
- Non-native English writers improving fluency and tone
- Professionals polishing emails, reports and posts
- Writers who want tools inside Chrome, Word and desktop apps
Skip it if
- Anyone hoping to disguise copied work; check your school's academic integrity rules
- Writers who need long-form content generation more than rewriting
- Buyers who want public, upfront pricing before signing up
You know what you want to say, but the sentence comes out clunky, repetitive or too casual for the audience. Maybe English is your second language, or you are rewriting your own notes into a cleaner report and keep getting stuck on the same phrases.
QuillBot started as an AI paraphrasing tool and has grown into a writing toolkit. Paste text, choose a mode such as Fluency or Formal, and it rewrites the passage while keeping the meaning. The same account adds a grammar checker, summarizer, AI detector, plagiarism checker, translator and citation generator.
Below we cover what the free plan includes, what Premium adds, and where to be careful.
What is QuillBot?
QuillBot is an AI writing assistant from Learneo, Inc. Its core tool, Paraphraser, rewrites sentences and paragraphs in a chosen style using predefined modes or custom instructions, with a synonym slider to control how much changes. Alongside it sit a grammar checker, summarizer, AI detector, plagiarism checker, AI humanizer, translator, citation generator and AI chat. It runs on the web and as extensions and apps for Chrome, Edge, Safari, Word, Windows, macOS, iOS and Android.
Pros and cons
What we like
- Free paraphraser with Standard and Fluency modes, no sign-up needed to try
- Premium adds Formal, Simple, Creative, Academic, Expand, Shorten, Humanize and Custom modes
- Synonym slider and click-to-swap AI thesaurus for fine control
- Paraphrases in 20+ languages
- Many tools in one account: grammar, summarizer, AI detector, plagiarism, citations, translate
- Available for Chrome, Edge, Safari, Word, Windows, macOS, iOS and Android
What could be better
- Premium prices are shown only after you create an account
- Most paraphrasing modes and the Humanize mode are Premium-only
- Paraphrased text still needs a human check for meaning and accuracy
- Using a paraphraser on assignments can breach academic integrity rules
Overall
Excellent
- Features4.5
- Ease of use4.7
- Value4.1
- Support3.8
Key features of QuillBot
Paraphraser
Rewrites text without changing its meaning, like a full-sentence thesaurus. Free includes Standard and Fluency modes; Premium unlocks Formal, Simple, Creative, Academic, Expand, Shorten, Humanize and unlimited Custom modes.
Synonym slider and thesaurus
Move the slider left for a closer rephrase or right for more creative changes. Click any word to see AI-suggested synonyms.
Grammar checker
Finds grammar, spelling and punctuation errors and suggests fixes. It works in the web editor and through the browser extension.
Summarizer and AI chat
Condense long articles or papers into key points, or use AI chat to draft and ask questions about your text.
AI detector and plagiarism checker
Check whether text reads as AI-generated and scan for matching sources before you submit or publish.
Apps and extensions
QuillBot works in Chrome, Edge and Safari, in Microsoft Word, and as Windows, macOS, iOS and Android apps, so suggestions follow you across sites.
QuillBot pricing
Checked 2026-10. Prices can change; confirm on QuillBot (a Learneo, Inc. business)’s site.
Free
$0
free
- Paraphraser with Standard and Fluency modes
- Grammar checker and other basic tools
- No sign-up needed for basic paraphrasing
Premium
Check current pricing
shown after sign-up; several billing terms
- All 10+ paraphrasing modes, including Humanize and Custom
- Full access to premium writing tools
- Prices vary by location and currency
Teams
Check current pricing
contact sales or request a demo
- Premium for groups
- Central billing
- Demo available
Watch out: QuillBot shows Premium prices only after you create an account and says prices can vary by location and currency, so check the billing term and renewal date at checkout.
See current QuillBot pricing →What people use QuillBot for
Rewriting your own draft
A graduate student uses Fluency and Academic modes to tighten a literature review written in a hurry. The synonym slider keeps technical terms close to the original.
Clearer business emails
A non-native English manager pastes a draft email into the Chrome extension and switches to Formal. Grammar suggestions catch errors before sending.
Summarizing research
A consultant runs three long reports through the summarizer to pull out key points, then checks the final write-up with the plagiarism checker.
How to get started with QuillBot
- 1
Open the paraphraser and paste a paragraph of your own writing
- 2
Try Standard and Fluency modes and adjust the synonym slider
- 3
Install the Chrome extension or Word add-in
- 4
Create an account to see Premium prices if you need more modes
QuillBot alternatives
| Product | Choose it when |
|---|---|
| QuillBot 4.3 | Students rewording notes and checking grammar and citations |
| Grammarly | Choose it if grammar, tone and clarity suggestions matter more than paraphrasing. |
| Originality.ai4.3 | Choose it if your main need is AI detection and plagiarism checking for published content. |
| Wordtune | Choose it for sentence-level rewrite suggestions inside the apps you already use. |
QuillBot: frequently asked questions
Is QuillBot free?+
Yes. The free plan includes the paraphraser with Standard and Fluency modes and other basic tools, and you can paraphrase without signing up. Premium unlocks more modes and features.
How much is QuillBot Premium?+
QuillBot shows Premium prices after you create an account, and its help center says prices can vary by location and currency. Check the current price and billing term at checkout.
Which paraphrasing modes are free?+
Standard and Fluency are free. Formal, Simple, Creative, Academic, Expand, Shorten, Humanize and Custom are listed as Premium modes.
Does QuillBot work in Google Docs or Word?+
QuillBot offers a Chrome extension that works across websites, plus a Microsoft Word add-in and desktop apps for Windows and macOS.
Is using QuillBot cheating?+
It depends on your school's or employer's rules. Paraphrasing your own writing is common, but presenting reworded sources as original work can breach academic integrity policies, so check the rules and cite sources.
How many languages does QuillBot support?+
QuillBot says the paraphraser can rephrase text in more than 20 languages.
Final verdict
Is QuillBot worth it?
If you write every day and want clearer, more fluent sentences, QuillBot is easy to try. Paste a paragraph into the free paraphraser, test the Fluency mode and grammar checker, and upgrade only if you need the Premium modes.
Try QuillBot freeAffiliate link · we may earn a commission at no extra cost to you.
Reviewed by
Amjid Ali, Founder and editor
Amjid Ali is a Melbourne-based AI and automation lead, author of five books on infrastructure, automation and digital transformation, and a corporate trainer whose courses on n8n, Proxmox, firewalls and ERP have taught thousands of IT professionals.
Last updated 17 October 2026 · How we review
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