Paraphrasing tool with a summariser, grammar check and citation helper
QuillBot is best known as a paraphrasing tool. Paste a passage, choose a mode such as Standard, Fluency or Formal, and it rewrites the text while keeping the meaning, with a slider controlling how much it changes. Around that core sit a summariser, a grammar checker, a citation generator and a plagiarism checker, so the product works as a small writing toolkit rather than a single feature. Students and non-native English speakers are the core audience, and the free tier limits how many words you can process and which modes you can reach. It changes wording, not facts, so paraphrases still need a human check.
Last updated: 2026-09-20. This site only provides an index; for exact features, pricing, and licensing, see the official website.
paraphrasing, summarising, esl writing, essay revision and citation formatting
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Changing wording does not remove the obligation to credit an idea. Using it on a source without citation is still plagiarism even when the sentences differ, so cite properly and make sure the paraphrase actually reflects what the original said.
The free plan meters words per request and limits which paraphrasing modes you can use, which is enough for paragraphs but not whole chapters. The premium tiers raise the limits and unlock the academic modes and plagiarism checking.
It is widely used by students for rewording and summarising, and the formal and academic modes help. It does not search the literature or verify facts, so every claim still needs checking against a real source.
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