QuillBot

AI paraphrasing and grammar checker

Productivity Freemium Has API
Researched · Published · Reviewed
RECATOOLS Score
7.3 / 10
Capability
7
Value for money
8
Ease of use
9
ASEAN readiness
6
API quality
4
Founded
2017
HQ
Chicago, Illinois, USA
Users
35m+ users
Launched
Jun 2026
Developer
Course Hero

Overview

QuillBot is widely used for paraphrasing, grammar checking, summarisation and citation generation — particularly popular with students. Free tier with limits; subscription unlocks faster modes and unlimited words.

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Pricing

Pricing shown for reference only. These figures reflect RECATOOLS research as of 19 May 2026 and may be out of date or incomplete. This is not financial or purchasing advice — always confirm the current price on the provider’s official website before making any decision.

Free
Free
Basic paraphrasing and grammar, 125-word limit per cycle

Use cases

Paraphrasing Grammar correction Summarization
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ASEAN Perspective

QuillBot in Southeast Asia

ASEAN-region availability and pricing notes coming soon. Drop the editorial team a note via /contact/ if you can supply local context (Singapore/Malaysia/Indonesia/Thailand/Vietnam).

RECATOOLS Verdict

QuillBot is one of the best-known AI writing utilities, centred on paraphrasing with multiple modes, plus summarizing, grammar checking, citation and (now) AI-detection and humanizer features. It is genuinely easy to use, has a usable free tier, and is popular with students and non-native English writers, which gives it real relevance across ASEAN classrooms and offices.

The caveats are familiar: paraphrasing tools sit in an academic-integrity grey zone, output quality is good but not flawless, and the upsell to Premium is persistent. It is English-first with some multilingual paraphrasing. As an affordable, approachable writing aid it earns its popularity, provided users treat it as an assistant rather than a shortcut.

Independent AI-assisted assessment by RECATOOLS.

Notable facts

  • QuillBot was acquired by Course Hero in 2021 for a reported $4.5 billion, making it one of the highest-value ed-tech acquisitions in history.
  • The tool's paraphrasing engine can rewrite the same sentence in over 7 different styles while preserving the original meaning.
  • QuillBot processes over 10 billion words per month — more than most major publishing houses produce in a year.

Frequently asked questions

Is QuillBot free?
Yes. The free version supports basic paraphrasing up to 125 words per cycle. Premium removes the limit at $9.95/month.
Is it cheating to use QuillBot for academic writing?
Many universities consider AI paraphrasing tools a form of academic dishonesty. Always check your institution's policy before use.
How does QuillBot compare to Grammarly?
QuillBot excels at paraphrasing and rewriting; Grammarly is stronger for grammar checking and tone analysis. Both are complementary.
Does QuillBot detect plagiarism?
Yes. A plagiarism checker is included in Premium and runs checks against online sources.
Can QuillBot summarise long documents?
Yes. The Summariser condenses articles and documents into key points.

About this listing

Researched on
Published on
Last reviewed

This entry was compiled from publicly available data including QuillBot's official website, press releases, documentation, and reputable third-party publications. RECATOOLS is not affiliated with QuillBot unless explicitly stated.

Data accuracy

Third-party AI tools update their pricing, features, availability, and policies frequently. Information here may be outdated by the time you read this — we make reasonable efforts to keep listings current, but cannot guarantee absolute accuracy.

For the latest details, please refer to QuillBot directly →

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