6,622 tools, each one opened, scored and signed by a Toolio reviewer

QuillBot

A full writing suite covering paraphrasing, grammar, plagiarism and AI detection in one browser tool.

Checked 5 Oct 2026 Reviewed by Alex Listed since August 2024

Screenshot of QuillBot

At a glance

Starts at Free Listed as free on the vendor's site.
Free tier Yes
Platforms Web, Chrome, macOS, Windows, iOS, Android
Best for Students and professionals polishing everyday written work
Not for Anyone needing every rewriting mode without a subscription

4.5 out of 5

Scored by Alex after real use

Our verdict

QuillBot combines a paraphraser, grammar checker, plagiarism and AI detector, summarizer, translator and citation generator into a single Chrome extension used by millions. The free version covers the basics, while modes like Humanize and Creative rewriting sit behind Premium. For everyday grammar fixes and paraphrasing it needs no upgrade, but heavier academic or professional use will likely hit the paywall.

βœ“What it does well

All-in-one suiteBundles paraphrasing, grammar checking, summarizing and citation tools in one place.
Wide adoptionUsed by millions of people, with a 4.7 out of 5 rating on its Chrome listing.
AI and plagiarism checksFlags AI-generated text and plagiarism before you submit or publish work.

βœ•Where it falls short

Premium-gated modesAdvanced modes like Humanize and Creative rewriting require a Premium subscription.
Free tier limitsFree usage of tools like paraphrasing is capped compared to paid plans.
Rewriting still needs reviewParaphrased output still benefits from a manual pass before you rely on it.

Key features

ParaphraserRewrites sentences to change wording and tone.
Grammar checkerFlags grammar, spelling and punctuation errors as you write.
AI detectorChecks text for signs of AI generation.
Citation generatorFormats citations for papers and reports automatically.

Questions about QuillBot

What can you do with QuillBot?

QuillBot is a writing suite that combines a paraphraser, grammar checker, plagiarism and AI detector, summarizer, translator and citation generator. It rewrites sentences to change wording and tone, flags errors as users write, and formats citations for papers and reports automatically.

Is QuillBot free?

QuillBot has a free version that covers the basics, and the reviewer says everyday grammar fixes and paraphrasing need no upgrade. Free usage of tools like paraphrasing is capped, though, and advanced modes such as Humanize and Creative rewriting require a Premium subscription.

What platforms does QuillBot support?

QuillBot runs on the web, as a Chrome extension, on macOS and Windows, and on iOS and Android. The reviewer notes that it is used by millions of people and holds a 4.7 out of 5 rating on its Chrome listing.

Who is QuillBot best for?

QuillBot suits students and professionals polishing everyday written work. Toolio says it is not for anyone needing every rewriting mode without a subscription, and the reviewer expects heavier academic or professional use to hit the paywall.

How does Toolio rate QuillBot?

Alex scored QuillBot 4.5 out of 5 after real use on 5 Oct 2026. The reviewer praises its all-in-one suite and its AI and plagiarism checks, but notes that paraphrased output still benefits from a manual pass before anyone relies on it.

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