QuillBot is the best paraphrasing tool available, and how much value you get from it depends entirely on what you use paraphrasing for.
Where it wins. The paraphraser is materially better than the alternatives at preserving meaning while genuinely restructuring a sentence, and the modes — formal, simple, shorten, expand — map to edits writers actually make. The grammar checker is competent and free without a word limit, which alone beats most competitors' paid tiers. The summariser handles long documents usefully, and the citation generator is a real time-saver for students. The Word and Chrome integrations put it where you write.
Where it falls short. Rewriting your own weak sentence is editing; rewriting someone else's work to evade detection is plagiarism, and the tool cannot tell the difference. Institutions increasingly treat heavy paraphraser use as academic misconduct. On the product itself: the free tier limits paraphrase length and modes, output can flatten a distinctive voice into something generic, and it will occasionally change meaning while preserving fluency, which is the dangerous failure mode.
Our call. A useful editing aid for non-native writers and clumsy drafts. Not a route around originality, and not a substitute for having something to say.
Best for
Writers, students, and non-native English speakers tightening their own drafts and checking grammar.
Key takeaways
- 1Best paraphrasing quality in the category, with useful register modes
- 2Grammar checking is free with no word limit
- 3Summariser and citation generator are genuine time-savers
- 4Word and Chrome integrations put it where you write
- 5Heavy paraphrasing of others' work is plagiarism, and institutions treat it as misconduct
- 6Occasionally alters meaning while keeping the sentence fluent
QuillBot is a rewriting tool first. Its paraphraser restates text in different registers — formal, simple, expanded — which makes it genuinely useful for tightening your own clumsy draft, and equally useful for disguising someone else's work, which is the ethical hazard attached to the whole category.
What we like
- Excellent paraphrasing
- Generous free grammar checker
- Useful summarising and citations
- Good editor integrations
- Low paid price
Worth noting
- Serious misuse potential
- Free tier limits length and modes
- Flattens distinctive voice
- Can subtly change meaning
Plans
Pricing
Free
- 125-word paraphrasing limit
- 2 writing modes
- Unlimited grammar checking
- 1,200-word summariser
Premium
per month, billed yearly
- Unlimited paraphrasing length
- All 8 writing modes
- Plagiarism checker
- 6,000-word summariser
- Word and Chrome add-ins
Pricing verified Aug 13, 2026. Prices shown are billed annually where available and may change — always confirm on the vendor site.
From real users
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Frequently asked questions
Is using QuillBot plagiarism?＋
Rewriting your own draft is editing. Rewriting someone else's work to disguise its origin is plagiarism, and universities increasingly treat heavy paraphraser use as academic misconduct regardless of the tool.
Is the grammar checker really free?＋
Yes, with no word limit, which is more generous than most competitors' paid tiers. The paraphraser is what the free plan limits, capping length and available modes.
Will QuillBot change my meaning?＋
Occasionally, and that is the failure mode to watch: output stays fluent while a detail shifts. Always read the rewritten sentence against the original rather than accepting it.
Does it work inside Word and Chrome?＋
Yes, there are add-ins for Microsoft Word and a Chrome extension, plus a macOS app, so it works where you already write.
QuillBot
From $8.33/mo