QuillBot.

QuillBot is an AI writing platform built around its Paraphraser, which rewrites text in different tones and styles, surrounded by a full toolkit of grammar checking, plagiarism detection, summarising and AI text tools. It is made for students, bloggers, marketers and professionals who write every day and want cleaner drafts faster. QuillBot is free to start, and Premium costs $8.33 a month billed annually, according to QuillBot’s official Premium page.

What is QuillBot?

QuillBot began as a paraphrasing tool and grew into a complete writing suite. The company says it is trusted by over 35 million writers worldwide, and the appeal is easy to see: instead of juggling separate apps for rewriting, grammar and citations, everything sits in one dashboard, with browser extensions and apps that follow you into Google Docs, Word and your email.

The toolkit covers the whole life of a piece of writing. Draft with the AI Chat, reshape sentences with the Paraphraser, clean up mistakes with the Grammar Checker, condense long reading with the Summarizer, then run the result through the Plagiarism Checker and AI Detector before you publish. Its AI Humanizer tackles the same problem as dedicated tools like Clever AI Humanizer — making machine-flavoured text read naturally.

Key Features

• Paraphraser: The flagship tool rewrites text in nine built-in modes — including Standard, Fluency and Academic — with unlimited custom modes on Premium. Free accounts can paraphrase up to 100 words at a time in two modes.
• Grammar Checker: Fixes basic errors for free; Premium adds advanced grammar recommendations and tone insights across six languages.
• AI Humanizer and AI Detector: Humanize text to sound natural (100 words at a time free, full access on Premium) and detect AI-generated content, with full detector access on Premium.
• Plagiarism Checker: Premium includes plagiarism prevention covering 25,000 words a month, helping you catch accidental duplication before submission.
• Summarizer: Condenses articles and papers — 1,200 words free, 6,000 words on Premium, with custom summary styles on the paid plan.
• Everywhere you write: Chrome and Edge extensions, a macOS app, a Microsoft Word add-in, and Android and iOS keyboards, plus translation into 40+ languages and paraphrasing in 23 languages.

How to Use QuillBot

1. Open the Paraphraser on the QuillBot website and paste the text you want to rewrite — no account needed to try it.
2. Pick a mode such as Fluency for smoother sentences or Academic for formal work, adjust the synonyms slider, and click Paraphrase.
3. Run the result through the Grammar Checker to catch anything the rewrite introduced.
4. Use the Summarizer when you are researching, to shrink long sources into notes you can actually use.
5. Before submitting, check important work with the Plagiarism Checker and AI Detector.
6. Install the Chrome extension or Word add-in so the same tools sit inside the apps where you write.

How much does QuillBot cost?

According to QuillBot’s official Premium page, there are two self-serve tiers plus a Team plan for organisations. Annual billing carries a 58% discount on Premium, which is the price shown below.

Plan	Price	What you get
Free	$0	Paraphrase up to 100 words in 2 modes, basic grammar fixes, humanize up to 100 words with limited usage, basic summaries, limited AI Detector access
Premium	$8.33/month	Full paraphrasing with 9 modes plus unlimited custom modes, advanced grammar, full Humanizer and AI Detector access, plagiarism prevention for 25,000 words/month, summaries up to 6,000 words, faster processing. Billed annually
Team	See quillbot.com	Everything in Premium plus team usage metrics, a user management dashboard, centralised billing, data control and priority assistance

Last verified: October 2026, against QuillBot’s official Premium page.

Pros

• A genuine all-in-one suite: paraphrasing, grammar, plagiarism, detection, humanizing and summarising in one subscription.
• Premium is inexpensive at $8.33 a month billed annually, and the free plan covers quick jobs without an account.
• Nine paraphrasing modes plus unlimited custom modes give far more control than a single “rewrite” button.
• Extensions and add-ins put the tools inside Chrome, Word and your phone keyboard, where writing actually happens.
• Strong multilingual support: paraphrasing in 23 languages and translation into more than 40.

Cons

• The free plan’s 100-word paraphrasing limit is too tight for essays or articles — it is a taster, not a workflow.
• The headline Premium price requires annual billing; shorter commitments cost more per month.
• Plagiarism checking is capped at 25,000 words a month even on Premium, which heavy users can burn through.
• Team pricing is not published on the Premium page, so organisations must contact QuillBot for a figure.

Who should use QuillBot?

QuillBot suits students tightening essays, content writers refreshing older articles, non-native English speakers who want a fluency pass, and small marketing teams that need rewriting and checking in one place. If you only paraphrase a sentence now and then, the free plan is enough. If writing is your job, Premium’s price is easy to justify — but pair it with your own editing, because no rewriter understands your argument like you do.

Frequently Asked Questions

How much does QuillBot Premium cost?

According to QuillBot’s official Premium page, Premium costs $8.33 USD per month when billed annually, advertised with 58% off the standard rate. The same page lists the free plan at $0. QuillBot also sells a Team plan with usage metrics and centralized billing, although its price is not shown on the page.

Is QuillBot free to use?

Yes. QuillBot has a free plan that costs nothing and still covers the core tools. Free accounts can paraphrase up to 100 words at a time in two modes, fix basic grammar errors, humanize up to 100 words with limited usage, generate basic summaries and use the AI Detector with limited access.

What do you get with QuillBot Premium?

QuillBot Premium removes the free plan’s main limits. Subscribers get full paraphrasing access with nine built-in modes plus unlimited custom modes, advanced grammar recommendations, full AI Humanizer and AI Detector access, plagiarism prevention for 25,000 words a month, custom summaries up to 6,000 words, faster processing and 100 MB of Flow storage.

Does QuillBot work in languages other than English?

Yes. QuillBot’s official comparison table says the Paraphraser works in 23 languages and its translator covers more than 40 languages. Grammar correction is available in six languages. That makes QuillBot usable for multilingual writers, although its deepest features, modes and writing suggestions are still built primarily around English-language writing.

Final Verdict

QuillBot is one of the best-value writing suites available: a capable paraphraser, honest grammar help and the safety net of plagiarism and AI detection for less than the price of a coffee a month on annual billing. The free tier is too cramped for real work, but as a paid upgrade for students and working writers, Premium is an easy recommendation.

Visit QuillBot →