QuillBot is a tool for paraphrasing English text that has gradually grown into a full writing suite: a grammar checker, summarizer, translator, citation generator and AI text detector. It is owned by Learneo, which runs other education services too. Its strength and distinguishing feature is paraphrasing: it rewrites a sentence or paragraph in different modes (fluent, formal, simple, shorter or creative), and you choose among the versions.

What is QuillBot good for?#

  • Smoothing an English paper: a graduate student who wrote the paper but finds the sentences stiff rewrites sections to sound more natural.
  • Summarizing source articles: for a literature review, get the gist of several pages of English text in a few sentences.
  • Simplifying technical text: make a complicated product explanation easier to read for a sales page.
  • Building a reference list: the citation generator writes sources in standard academic formats.
  • Variety in repeated text: a store writing similar product descriptions for a foreign market avoids repeating identical sentences.

Strengths and weaknesses#

Strengths:

  • Varied paraphrasing modes and control over how many words change.
  • A simple, fast interface for anyone who just wants to improve a paragraph.
  • Browser and Word extensions, plus desktop and mobile apps.
  • The free plan is enough for light use.

Weaknesses:

  • Language coverage is narrow compared with general assistants.
  • It sometimes changes the exact meaning of a scientific or technical sentence; always compare with the original.
  • Its AI text detector, like all similar tools, is not definitive.
  • Machine paraphrasing of other people's text can create research-ethics problems.

Free plan and pricing#

QuillBot has a free plan that offers paraphrasing with a few basic modes, a grammar checker, a summarizer and a translator, with limits on text length and the number of modes. A paid plan unlocks all paraphrasing modes, longer text, similarity checks and more features. Check the official site for current prices.

Language support#

QuillBot's paraphraser works for a set of European and Asian languages, so confirm yours is included before relying on it. Its translator covers more languages, and the quality is acceptable but no better than general assistants such as Claude or ChatGPT. For many non-English writers, QuillBot is mainly an English writing tool.

Getting started in three steps#

  1. Go to the site and open the paraphrasing tool; for basic use, you do not even need to sign up.
  2. Paste your English paragraph and choose a suitable mode (for example formal or fluent).
  3. Compare the suggested version with the original sentence by sentence and keep only the changes that preserve the meaning.

QuillBot alternatives#

  • Grammarly: stronger at proofreading and at helping while you type in any app.
  • DeepL: for fluent translation and improving English text.
  • ChatGPT: paraphrasing with precise instructions in any language.

If you edit text in another language, see editing and rewriting text with AI, and for translation, technical translation with AI, without the translated feel.