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Tool profile

QuillBot

QuillBot is an AI-powered writing tool built primarily around paraphrasing, grammar checking, and summarization. It rewrites text in multiple modes to change tone, style, or complexity, and bundles in a grammar checker, plagiarism checker, citation generator, and summarizer. It is aimed at students, non-native English speakers, and writers who need to rephrase content quickly.

Made byQuillBot (acquired by Course Hero in 2021)
Launched2017
CategoryAI Writing Assistant / Paraphrasing Tool
Best forStudents rewriting essays or source material, non-native English speakers cleaning up awkward phrasing, researchers summarizing long papers, and writers who need a fast grammar pass without paying for Grammarly. Not ideal for generating original long-form content from scratch.
PricingFree tier available; Premium is $9.95/month billed annually ($19.95/month billed monthly); no usage-based pricing — it is a flat subscription.

Models and pricing

Free Plan$0/month

Casual users who need basic paraphrasing and grammar checks occasionally

Limits you to 125 words per paraphrase session, two paraphrasing modes (Standard and Fluency), and no plagiarism checker. Functional for light use but the word cap gets frustrating fast if you are working on anything longer than a paragraph.

Premium Plan (Annual)$9.95/month (billed as $119.40/year)

Students, academics, and regular writers who use the tool daily

Unlocks unlimited paraphrasing length, all seven paraphrasing modes (Formal, Simple, Creative, Expand, Shorten, Academic, and Fluency), faster processing, a plagiarism checker (up to 20 checks per month), and advanced grammar suggestions. This is the only plan worth paying for if you use it more than a few times a week.

Premium Plan (Monthly)$19.95/month

Users who only need it for a short project or single month

Same features as the annual Premium plan but nearly double the per-month cost. Only makes sense if you genuinely need it for one month and will not continue. Otherwise, annual is the obvious choice.

Which model should you use?

If you use QuillBot more than a couple of times a week, pay for the annual Premium plan — the word limit on the free tier makes it nearly unusable for real work; if you only need it once in a while, the free tier is genuinely fine for short passages.

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