QuillBot is an AI writing tool best known for paraphrasing: you paste in a passage and it rewrites it in a different style or at a different length. Its homepage now describes a wider set of writing tools, including grammar checking, tone analysis, an AI chat and a design studio, with a Chrome extension that works across websites and apps.
This guide profiles QuillBot from its own pages: what the tool does, who it suits, the features and plans it lists, strengths, limits and what we could and could not confirm about data handling. QuillBot’s site blocked our browser tools, so we read its homepage and Premium page through a text fetch and did not capture a screenshot. There is no older QuillBot review on Genrosys, so this is the first profile of it.
How we researched this: we did not run hands-on tests for this article. It is based on the vendor’s own documentation and public sources, checked on 14 November 2026. Features and prices change, so confirm details on the vendor’s site before you buy.
Key takeaways
- QuillBot’s homepage says you can “Paraphrase, check grammar, analyze tone, improve fluency, and more”, and lists AI Chat, a Design Studio, a Writing Studio and a Chrome extension.
- The Premium page lists a Free plan at $0 per month and Premium at $8.33 USD per month billed annually. Team has no price shown. Checked on 14 November 2026.
- Free limits paraphrasing to 125 words in 2 modes. Premium lists unlimited paraphrasing in 9 modes, summaries up to 6,000 words and unlimited AI Detector access.
- The homepage claims 35 million-plus writers and use in 180-plus countries. These are vendor claims we have not verified.
- The pages we read do not name the company that owns QuillBot, and we could not read its privacy policy, so we make no data-handling claims.
What it is and who makes it
QuillBot is a set of AI writing tools centred on rewriting. The homepage summarises the idea in one line: “Paraphrase, check grammar, analyze tone, improve fluency, and more”. Around that core, it lists several things.
- AI Chat. Described as a way to brainstorm, research and build through conversation, then move into Docs or Designs.
- Design Studio. Described as a place to write, design and generate visuals in one workspace, including resumes and slide decks.
- Writing Studio. For crafting clear, polished, professional writing.
- Apps and extensions. It works across apps and websites, including a Chrome extension.
The Premium page lists additional tools: a paraphraser with modes, a grammar checker, a humanizer, a summariser and an AI Detector, plus plagiarism prevention. The homepage text we read did not mention some tools that are well known in other coverage, such as a translator, citation generator or Co-Writer, and we do not confirm them here.
The page does not say who owns or makes QuillBot, and we do not guess. If ownership matters for your procurement, check the company’s terms and privacy policy. For general background on the models behind such tools, see what is a large language model.
Who it is for
- Students and writers who need to rephrase. The paraphraser is the best-known tool and has a free tier, though capped at 125 words per run.
- Non-native English writers. Fluency and grammar tools are the main draw. The Premium page lists grammar correction in 6 languages, so check coverage for yours.
- People who summarise long reading. Free summaries are limited to 1,200 words and Premium reaches 6,000 words.
- Teams. The Team plan lists usage metrics, a user management dashboard and centralised billing, and directs groups of 5 or more to a discounted single invoice.
- Institutions. The homepage says it has partnered with 140-plus institutions, a claim we have not verified.
It is not a good fit if you need a general research assistant or a document platform. For that, compare ChatGPT or Claude, and for in-app editing see Grammarly.
One caution applies to any rewriting tool used by students: institutions have their own rules about AI assistance and about paraphrasing source material. Rewriting someone else’s work does not remove the need to cite it. Check your institution’s policy before you rely on a paraphraser for graded work.
Core features
Paraphraser
The core tool. Free lists paraphrasing of up to 125 words in 2 modes. Premium lists unlimited paraphrasing in 9 modes, plus custom modes.
Grammar checker
Free lists basic grammar fixes. Premium lists advanced grammar recommendations, with grammar correction in 6 languages.
Summariser
Free lists basic summaries of up to 1,200 words. Premium lists summaries of up to 6,000 words and custom summaries.
Humanizer
Free lists basic-mode humanizing, limited to 3 uses. Premium lists advanced-mode humanizing, unlimited. The page does not explain what humanizing does beyond the name, and we do not describe the method.
AI Detector
Free lists limited access. Premium lists unlimited access. Detectors give signals, not proof, so do not rely on one score.
Plagiarism prevention
Premium lists plagiarism prevention at 25,000 words per month.
Tone analysis and fluency
The homepage lists analysing tone and improving fluency as part of its core promise.
Newer and advanced features and integrations
AI Chat
The homepage describes AI Chat as a conversational place to brainstorm, research and build, then move into Docs or Designs. We could not read details on models or limits.
Design Studio and Writing Studio
The homepage describes Design Studio as a workspace to write, design and generate visuals, including resumes and slide decks, and Writing Studio as a place for polished professional writing. These are newer additions on top of the paraphrasing heritage.
Chrome extension
The homepage promotes a Chrome extension that works across websites. It shows a rating of 4.5 out of 5 in one place and 4.7 out of 5 with more than 6 million users in another, and the claim “One of Google’s favorite extensions”. These are vendor-presented and inconsistent between places, so check the store listing yourself.
Document storage and devices
Free lists 10 MB of document storage and Premium 100 MB. Premium can be used on up to 10 devices at a time.
Team tools
The Team plan adds team usage metrics, a user management dashboard, centralised billing, data control and personal support, per the Premium page.
Responsible use
Paraphrasing tools sit in an awkward place. Used well, they help you tighten your own sentences, vary phrasing and understand dense text. Used badly, they can disguise copied material or produce text that sounds fluent but misstates the source. A sound habit is to paraphrase only your own drafts, to keep the original source open while you check the rewrite, and to cite whatever idea you took from elsewhere. If you publish professionally, check any rules your publisher has about AI assistance.
A short test plan
Take three passages from your own writing: a dense technical paragraph, a casual email and a paragraph with a statistic or a citation. Run each through the paraphraser in a few modes and compare the results with the originals. Check whether numbers, names and caveats survive. Then run a long article through the summariser and compare the summary with what you consider the three main points. Finally, try the grammar checker on text that contains a deliberate error or two. This takes under half an hour and tells you whether the free caps are workable or whether Premium would remove real friction.
Pricing and plans
Checked on 14 November 2026. The Premium page shows prices in USD.
| Plan | Price on the page | What the page lists |
|---|---|---|
| Free | $0 per month, no credit card required | Paraphrase up to 125 words in 2 modes, basic grammar fixes, basic-mode humanizing limited to 3 uses, summaries up to 1,200 words, limited AI Detector access, 10 MB document storage |
| Premium | $8.33 USD per month, billed annually (the page also shows an unlabelled $5.00 figure whose meaning is unclear) | Unlimited paraphrasing in 9 modes plus custom modes, advanced grammar recommendations, unlimited advanced humanizing, summaries up to 6,000 words, unlimited AI Detector, plagiarism prevention at 25,000 words per month, 100 MB storage, up to 10 devices, 3-day money-back guarantee |
| Team | No price shown | Everything in Premium plus usage metrics, user management dashboard, centralised billing, data control, personal support; cancelable anytime; 100 percent money-back guarantee; groups of 5 or more directed to a discounted single invoice |
Two cautions. First, the monthly price is quoted on annual billing, so the full annual charge is due at once, and the page does not show a monthly-billing price. Second, the page shows a $5.00 figure without a label. Do not assume it is a discount until you see it at checkout. The page offers a 3-day money-back guarantee for Premium, which is short, so test promptly. See how to read an AI tool’s pricing page for a checklist.
Strengths
A focused core tool
Paraphrasing is the thing QuillBot is known for, and the plan table makes the difference between Free and Premium concrete: 125 words in 2 modes versus unlimited in 9 modes.
Low listed entry price
$8.33 per month on annual billing is lower than many business-focused writing tools, and a free tier is available.
Transparent limits
The page lists specific numbers: 125 words, 1,200 words, 6,000 words, 25,000 words per month, 10 MB, 100 MB and 10 devices. That makes it easy to see whether Free is enough.
Breadth beyond paraphrasing
Grammar, summaries, an AI Detector, plagiarism prevention and an AI chat are available under one account.
Short money-back window offered
A 3-day money-back guarantee gives a safety net for a quick test.
Easy to evaluate quickly
Because the free tier has specific caps and the paid tier is a single, clearly labelled plan, you can judge fit in one sitting. That is a useful property for a tool people often buy on impulse before an essay deadline.
Weaknesses and limits
Billing is annual for the headline price
The $8.33 figure is billed annually. The page does not show a monthly-billed price, so a short-term user may not get that rate.
Unclear $5.00 figure
The Premium page shows an unlabelled $5.00 figure, which makes the pricing harder to read with confidence.
Ownership and data terms not on the pages we read
We could not find who owns QuillBot on the homepage and could not read its privacy policy, so you must check both yourself.
Some tools capped even on Premium
Summaries are capped at 6,000 words and plagiarism prevention at 25,000 words per month.
Detectors and humanizers are contested uses
An AI Detector gives a signal, not proof. A humanizer may conflict with institutional or publisher rules. Use both responsibly.
Rewrites can change meaning
A paraphrase that reads well may change a technical claim or a citation. Always compare with the original, and see how to check AI output for mistakes.
Free caps are tight for long text
A 125-word paraphrase limit and 1,200-word summary limit suit short passages. If you routinely work with long documents you will either hit the caps often or need Premium.
Privacy, data handling and security
We could not read QuillBot’s privacy policy or terms. Their page was not on the list our tools could fetch, so we make no statements about how text is stored, whether it is used to improve models, how long it is retained or how to delete it. The only data-related item on the pages we read is the Team plan’s listing of “data control” as a feature, with no detail.
Before using any paraphraser on confidential text, find the vendor’s privacy policy, look for statements about training and retention, and decide whether the text is safe to paste into a third-party service. For students, remember that submitting text to an online tool can also raise integrity questions. For companies, use how to protect company data when using AI tools as a starting policy.
How it compares
The table compares QuillBot with three other tools from the 50-tool list that overlap on writing help. It documents differences from official pages and does not rank them.
| Aspect | QuillBot | Grammarly | Jasper | ChatGPT |
|---|---|---|---|---|
| Main job | Paraphrasing and rewriting with grammar and summaries | Editing and tone in the apps you write in | Marketing content with brand context | General assistant |
| Free plan | Yes, with word caps | Yes, with 100 AI prompts per month | 7-day trial on Pro | Yes, with limits |
| Paid entry price on official page | $8.33 per month billed annually | $12 per member per month billed annually | $59 per seat per month billed annually | Not readable on the page we fetched |
| Team option | Team plan, no price shown | Enterprise, contact sales | Business, custom | Business and Enterprise |
See our full guides for Grammarly and Jasper.
| If you mostly | Consider | Reason |
|---|---|---|
| Rephrase passages and shorten reading | QuillBot | Paraphraser and summariser with listed limits |
| Polish everything you type in many apps | Grammarly | Documented across apps and browsers |
| Draft and research in conversation | ChatGPT or Claude | General assistants |
Getting started
- Open the free paraphraser and test it on a paragraph you know well.
- Compare the output with the original for meaning, not just style.
- Try the grammar checker and summariser, noting where the word caps stop you.
- Check the Premium page and decide if unlimited modes and longer summaries matter to you.
- If you buy, test within the 3-day money-back window and note the billing terms.
- Find and read the privacy policy before pasting confidential text.
Frequently asked questions
What is QuillBot best known for?
Paraphrasing. The homepage describes paraphrasing, grammar checking, tone analysis and fluency improvement.
Is QuillBot free?
Yes. The Free plan is $0 per month with caps such as 125 words in 2 modes for paraphrasing.
How much is QuillBot Premium?
The page showed $8.33 USD per month billed annually on 14 November 2026. It also showed an unlabelled $5.00 figure whose meaning is unclear.
Is there a refund?
The Premium page lists a 3-day money-back guarantee.
Does QuillBot have a team plan?
Yes, a Team plan with usage metrics and centralised billing. No price is shown on the page.
Who owns QuillBot?
The pages we read do not say. Check the company’s terms and privacy policy.
Can I use a paraphraser for schoolwork?
That depends on your institution’s rules. Rewriting does not remove the need to cite a source, so read your policy first.
What happens to my text after I paste it in?
We could not confirm this because we could not read the privacy policy. Read it before pasting confidential material.
Can the AI Detector prove that text was written by AI?
No. Detectors estimate likelihood and can be wrong in both directions. Do not use a single score as proof of anything.
Conclusion
QuillBot is a rewriting-first writing tool with a clear free tier, a low listed Premium price and specific limits on its pages. Its strengths are the focused paraphraser, transparent plan limits and breadth across grammar, summaries and detection. Its cautions are annual billing for the headline price, an unlabelled price figure, capped features, and the fact that we could not confirm ownership or data handling.
Test the free tier with real text, check the meaning of every rewrite, read the privacy policy before pasting anything sensitive, and use the short money-back window if you buy. For broader method, see how to choose an AI tool and how to test an AI tool before you pay for it.
If you are choosing between QuillBot and an editing assistant, a simple rule is to ask whether you mainly want to rewrite passages or to polish text as you type. The first points to a paraphraser, the second to an editor that lives in your apps. Many writers use one or the other, and some use both for different jobs. Whichever you choose, keep the original text, compare meaning carefully and cite your sources.
Sources
- QuillBot homepage, accessed 14 November 2026
- QuillBot Premium page, accessed 14 November 2026
