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QuillBot

quillbot.com

From $0.69/mo Free plan WebWindowsmacOSiOSAndroidBrowser extension
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Spec score 9.5 #1 of 269 in AI Writing Tools

What it is

QuillBot is a set of AI tools for writing, communication, design, coding, and collaboration across platforms and formats. Its writing tools include paraphrasing, grammar and plagiarism checking, AI detection and humanizing, summarizing, and citation generation. The Free plan allows paraphrasing up to 100 words in two modes, with basic grammar and summaries plus limited access to humanizing and the AI Detector. The Premium comparison lists paraphrasing in 23 languages and translation into more than 40 languages. QuillBot offers desktop and mobile apps for macOS, Windows, Android, and iOS, alongside Chrome, Edge, and Safari extensions. Its desktop app can appear as a widget in apps including Slack, Notes, and Messages; Premium also lists a Word add-in. QuillBot says one subscription works across its apps and platforms, with Premium usable on up to 10 devices at a time. Team plans add writer-management dashboards and centralized billing, while Team Plan benefits include priority assistance and account-management support. The maker says QuillBot began in 2017 as a paraphrasing tool for English-language learners. The Free plan is available; no Premium price is listed here.

Spec sheet

What it does
QuillBot provides AI tools for paraphrasing, grammar correction, summarization, translation, originality checking, chat, image generation and related writing tasks.Read 14 Oct 2026 · quillbot.com
Product
Quillbot describes its AI tools as helping users write, communicate, design, code, and collaborate across platforms and formats.Read 7 Oct 2026 · quillbot.com
Free plan
YesRead 20 Sep 2026 · quillbot.com
API
QuillBot states that it currently offers no B2B or B2C API.Read 14 Oct 2026 · help.quillbot.com
Integrations
Its desktop app can appear as a widget in apps including Slack, Notes, and Messages, and its Premium page lists a Word add-in.Read 7 Oct 2026 · quillbot.com
Support
Premium’s Team Plan benefits include priority assistance and account-management support.Read 7 Oct 2026 · quillbot.com
Founded
2017Read 23 Sep 2026 · quillbot.com
Account portability
Quillbot says one subscription works across its apps and platforms, and Premium can be used on up to 10 devices at a time.Read 7 Oct 2026 · quillbot.com
Acquisition news
Course Hero announced its acquisition of QuillBot alongside CliffsNotes on August 19, 2021.Read 14 Oct 2026 · prnewswire.com
AI Chat
AI Chat is free up to 20 queries per day for new users and unlimited for Premium users.Read 14 Oct 2026 · help.quillbot.com
AI Detector
The AI Detector analyzes text for signals that it may have been generated by AI, including sentence-level analysis.Read 14 Oct 2026 · play.google.com
Chrome extension
The Chrome extension provides paraphrasing, grammar checking, humanizing, AI detection, chat and image tools in the browser.Read 14 Oct 2026 · chromewebstore.google.com
Citation Generator
QuillBot includes a citation generator among its writing and originality tools.Read 14 Oct 2026 · quillbot.com
Company founding
QuillBot says it began in 2017 in a college dorm when Anil Jason, Rohan Gupta and David Silin built the first Paraphraser.Read 14 Oct 2026 · quillbot.com
Company history
Quillbot’s About page says it began in 2017 as a paraphrasing tool created to help English-language learners with writing.Read 7 Oct 2026 · quillbot.com
Company scale
QuillBot's About page reports 35+ million monthly active writers, 225 employees and 5.3 billion annual Paraphraser inputs.Read 14 Oct 2026 · quillbot.com
Data controls
Extension users can opt out of stored text inputs and, for account holders, model training on those inputs; storage is enabled by default.Read 14 Oct 2026 · quillbot.com
Data handling
QuillBot says connections are encrypted, it does not sell user data, and Team Plan text inputs are not used for training.Read 14 Oct 2026 · quillbot.com
Data privacy
Quillbot says it does not sell user content or data, encrypts connections, and restricts access to customer data.Read 7 Oct 2026 · quillbot.com
Documentation and support
The Help Center contains product guides, billing, extensions and apps, troubleshooting, privacy, safety and business-plan documentation.Read 14 Oct 2026 · help.quillbot.com
Free limits
The Free plan allows paraphrasing up to 100 words in two modes, with limited humanizing and AI Detector access.Read 7 Oct 2026 · quillbot.com
Google Docs integration
The Chrome extension can show a QuillBot widget inside Google Docs for paraphrasing and grammar checking, provided the user is signed in.Read 14 Oct 2026 · help.quillbot.com
Grammar Checker
Its Grammar Checker identifies grammar, spelling and punctuation problems and offers corrections.Read 14 Oct 2026 · quillbot.com
Headquarters and size
LinkedIn lists QuillBot as privately held, headquartered in Chicago and employing 201–500 people.Read 14 Oct 2026 · linkedin.com
Image generation
The platform includes text-prompt image generation, with usage limits varying by plan.Read 14 Oct 2026 · quillbot.com
Input use
Quillbot says user inputs and usage data may be used to provide and personalize its service and train improvements, while it does not train on Team Plan users’ text inputs.Read 7 Oct 2026 · quillbot.com
Language support
multilingualRead 20 Sep 2026 · quillbot.com
Legal name
Crunchbase lists the legal name as QuillBot, Inc.Read 14 Oct 2026 · crunchbase.com
Limit: billing
Trustpilot's review summary identifies complaints about recurring charges, inactive subscriptions and account-access problems.Read 14 Oct 2026 · trustpilot.com
Limit: detector threshold
GetApp reviewers requested an AI detector that can analyze fewer than 80 words and objected when short passages could not be scanned.Read 14 Oct 2026 · getapp.com
Limit: free word cap
An App Store reviewer complained that the free paraphrasing allowance had been reduced to 125 words and that more features moved behind the paywall.Read 14 Oct 2026 · apps.apple.com
Limit: keyboard quality
App reviewers reported inaccurate autocorrect, voice-to-text problems, awkward keyboard layout and the keyboard obscuring text in some apps.Read 14 Oct 2026 · apps.apple.com
Limit: robotic output
A TrustRadius reviewer asked for more human-sounding sentence corrections and a stronger plagiarism detector.Read 14 Oct 2026 · trustradius.com
Microsoft Word integration
The Word add-in places QuillBot Paraphraser and Grammar Checker in a Word sidebar on Windows, Mac and Word online.Read 14 Oct 2026 · help.quillbot.com
Owner
QuillBot became part of Learneo, formerly Course Hero, in 2021.Read 14 Oct 2026 · quillbot.com
Paraphraser
The service rewrites text with multiple built-in modes, synonym controls and custom modes.Read 14 Oct 2026 · quillbot.com
Plagiarism Checker
Premium includes plagiarism checking with a stated limit of 25,000 words per month.Read 14 Oct 2026 · quillbot.com
Platform availability
Quillbot lists desktop and mobile apps for macOS, Windows, Android, and iOS, plus Chrome, Edge, and Safari browser extensions.Read 7 Oct 2026 · quillbot.com
Praise: breadth
TrustRadius reviewers praise paraphrasing, synonyms, grammar checking, summarization, citation, translation and word-processor integration.Read 14 Oct 2026 · trustradius.com
Praise: usability
GetApp reviewers repeatedly describe faster proofreading, easier editing and rephrasing that preserves meaning.Read 14 Oct 2026 · getapp.com
Rating on Apple App Store
4.7 out of 5 from 3.1K ratingsRead 14 Oct 2026 · apps.apple.com
Rating on Chrome Web Store
4.7 out of 5 from 5.9K ratingsRead 14 Oct 2026 · chromewebstore.google.com
Rating on G2
4.4 out of 5 from 122 reviewsRead 14 Oct 2026 · g2.com
Rating on GetApp
4.5 out of 5 from 157 reviewsRead 14 Oct 2026 · getapp.com
Rating on Google Play
4.5 out of 5 from 22.5K reviewsRead 14 Oct 2026 · play.google.com
Rating on Trustpilot
4.8 out of 5 from 14,302 reviewsRead 14 Oct 2026 · trustpilot.com
Rating on TrustRadius
8.7 out of 10 from 10 reviewsRead 14 Oct 2026 · trustradius.com
Security compliance
QuillBot says it works toward GDPR and CCPA compliance, follows PCI DSS, participates in the EU-U.S. and Swiss-U.S. Data Privacy Frameworks and has CASA Tier 2 verification.Read 14 Oct 2026 · quillbot.com
Security standards
Quillbot says it works toward GDPR compliance, abides by the CCPA, complies with PCI DSS, and is verified through CASA Tier 2.Read 7 Oct 2026 · quillbot.com
SEO features
YesRead 20 Sep 2026 · quillbot.com
Summarizer
The Summarizer supports inputs up to 1,200 words on Free and 6,000 words on Premium, with custom summaries on Premium.Read 14 Oct 2026 · quillbot.com
Team collaboration
YesRead 20 Sep 2026 · quillbot.com
Team features
The Team Plan page lists all Premium features, writer-management dashboards, and centralized billing.Read 7 Oct 2026 · quillbot.com
Translation
The Premium comparison lists paraphrasing in 23 languages and translation into 40+ languages.Read 7 Oct 2026 · quillbot.com
Translator
QuillBot advertises translation across more than 40 languages on its plan comparison.Read 14 Oct 2026 · quillbot.com
Word add-in limits
The Word add-in is free to install, while Premium is required for all modes, higher limits and advanced suggestions.Read 14 Oct 2026 · help.quillbot.com
Writing tools
Its listed writing tools include paraphrasing, grammar checking, plagiarism checking, AI detection, AI humanizing, summarizing, and citation generation.Read 7 Oct 2026 · quillbot.com

Plans and prices

Free Free Paraphrase up to 100 words · 2 modes · basic grammar · limited humanizer · basic summaries · limited AI Detector Read 14 Oct 2026 · quillbot.com
Premium $8.33 a month billed annually Unlimited paraphrasing · 9 modes · advanced grammar · plagiarism checking up to 25,000 words/month · summaries up to 6,000 words · full AI Detector Read 14 Oct 2026 · quillbot.com
Premium Priced on request 25,000 plagiarism-checker words/month · 6,000 words in Summarizer · 300 AI images/month · 100 MB Flow storage Read 20 Sep 2026 · quillbot.com
Premium $8.33 a year Per month, billed annually Full paraphrasing · unlimited modes · advanced grammar · full humanizing and AI Detector · plagiarism prevention · 25,000 plagiarism words/month Read 7 Oct 2026 · quillbot.com
Team Plan (51+ seats) $69.95 a year €69,95 billed every 12 months All Premium features · writer-management dashboards · centralized billing Read 20 Oct 2026 · quillbot.com
Team Plan (11–50 seats) $79.95 a year €79,95 billed every 12 months All Premium features · writer-management dashboards · centralized billing Read 20 Oct 2026 · quillbot.com
Team Plan (2–10 seats) $89.95 a year €89,95 billed every 12 months All Premium features · writer-management dashboards · centralized billing Read 20 Oct 2026 · quillbot.com
Team Priced on request Team usage metrics · user management dashboard · centralized billing · data control · priority assistance Read 14 Oct 2026 · quillbot.com

Every QuillBot plan and price →

Strong points and limits

Strong points

  • Free paraphrasing covers up to 100 words
  • Supports paraphrasing in 23 languages on Premium
  • Translation is listed for more than 40 languages
  • Apps and extensions cover desktop, mobile, and browsers
  • Team plans include dashboards and centralized billing

Limits

  • Free paraphrasing has a 100-word limit
  • Free access to humanizing and AI detection is limited

Who it suits

QuillBot may suit individuals revising or summarizing text, as well as teams needing writer-management dashboards and centralized billing. Its apps, extensions, and multilingual writing and translation tools support work across platforms.

QuillBot in depth

Read the full write-up

QuillBot is a multilingual writing suite spanning paraphrasing, checking, summarizing and citation work. It suits writers who want several tools across devices, including students and teams. The free tier is a useful sampler, but its 100-word paraphrasing cap makes it a poor fit for sustained rewriting.

Overview

QuillBot began in 2017 as a paraphrasing tool aimed at helping English-language learners write. It has expanded into tools for writing, communication, design, coding and collaboration. That breadth makes it more useful as a general writing toolkit than as a dedicated paraphraser, though its appeal depends on whether you will use the extra functions.

The company reports more than 35 million monthly active writers and 225 employees. QuillBot supports multiple languages; Premium includes paraphrasing in 23 languages and translation into more than 40. That coverage is relevant for multilingual work, but the free paraphrasing allowance remains narrow.

Key features

Writing and revision: Paraphrasing is joined by grammar and plagiarism checking, AI detection and humanizing, summarizing, and citation generation. This range suits users who want several writing tasks in one toolkit rather than a single-purpose rewriter.

Free access: Free allows paraphrasing up to 100 words in two modes, alongside basic grammar and summaries, with limited humanizing and AI Detector access. It works for brief edits and trying the service; longer passages quickly run into the cap.

Cross-platform workflow: Desktop apps are available for macOS and Windows, mobile apps for Android and iOS, and browser extensions for Chrome, Edge and Safari. The desktop app can appear as a widget in Slack, Notes and Messages, while Premium includes a Word add-in. One subscription works across apps, and Premium can be used on up to 10 devices at a time.

Team controls: Team plans include Premium features, writer-management dashboards and centralized billing. QuillBot says it does not train on Team Plan users’ text inputs, a meaningful distinction for organizations considering shared use.

QuillBot says it encrypts connections, restricts access to customer data, does not sell user content or data, works toward GDPR compliance, abides by the CCPA, complies with PCI DSS and is verified through CASA Tier 2. It may use user inputs and usage data to provide and personalize the service and train improvements, so individual users should weigh that use against their privacy requirements.

Pricing

QuillBot uses a freemium model. The Free plan costs nothing, billed per month. It includes the 100-word, two-mode paraphraser, basic grammar and summaries, and limited humanizing and AI Detector access. That is a low-commitment option for occasional short edits, not a practical allowance for regular long-form rewriting.

Premium has no listed price and is billed annually. Its stated quotas include 25,000 plagiarism-checker words per month, 6,000 words in Summarizer, 300 AI images per month and 100 MB of Flow storage. The multilingual paraphrasing and translation coverage, plus the Word add-in and 10-device allowance, make it the fuller individual option, but a reader cannot compare its cost with those quotas before choosing it.

Team pricing is billed every 12 months and scales by seat count. Team Plan (2–10 seats) costs $750 a year (billed €89,95 every 12 months); Team Plan (11–50 seats) costs $666 a year (billed €79,95 every 12 months); Team Plan (51+ seats) costs $583 a year (billed €69,95 every 12 months). Each includes all Premium features, writer-management dashboards and centralized billing. The larger tiers have lower stated prices, so they suit larger groups better than a small team; the figures present USD and euro amounts together, which buyers should account for when budgeting.

Platforms

QuillBot runs on the web, macOS, Windows, Android and iOS, with Chrome, Edge and Safari extensions. This breadth favors writers who switch between desktop and mobile work. Widget access in apps such as Slack, Notes and Messages adds convenience for short edits in context, while the Word add-in extends the Premium workflow into a word processor.

Who it's for

QuillBot is a strong fit for students, multilingual writers and individuals who need a mix of paraphrasing, grammar, summaries and citation support. Teams may value the dashboards, consolidated billing and stated input-training distinction. It is less suitable for anyone who regularly needs to paraphrase substantial text on the free tier, or who needs to compare an individual Premium price before committing.

Pros and cons

Pro: A broad set of writing tools combines paraphrasing with grammar, plagiarism, AI and citation functions, reducing the need to switch between separate writing utilities.

Pro: Desktop, mobile and browser options, plus use across up to 10 devices for Premium, support writers who move between platforms.

Pro: Team dashboards, centralized billing and no training on Team Plan text inputs address practical group-management and privacy concerns.

Con: Free paraphrasing stops at 100 words and two modes, which limits usefulness on longer drafts.

Con: Premium is billed annually but has no listed price, making the value of its larger quotas difficult to judge in advance.

Con: Individual inputs and usage data may be used for service personalization and improvement training, which may not suit every privacy preference.

Alternatives

For a wider choice, browse Paraphrasing Tools, AI Grammar Checkers, AI Summarizers, AI Paraphrasing Tools, AI Writing Tools and AI writing assistants.

Paperpal is worth comparing for research and writing needs: its Prime plan costs $144 a year ($12/month, billed annually), with web and extension access.

Trinka is another freemium option, with web, extension, API, macOS, Windows and self-hosted platforms.

Wordtune suits users who want a free daily allowance of 10 rewrites and AI suggestions, three AI summaries per month, and unlimited spelling corrections and grammar checks.

Rephraser.co offers a $9.95 monthly plan with unlimited paraphrasing and humanizing, up to 4,000 words per input, and access to all modes and tools.

RewriteGuru has a free 800-word rewriting limit and 800-word spell and plagiarism checks with unlimited queries; its monthly plan costs $9.99 a month.

Paraphrasing.io offers a free registered plan with 8,000 credits for paraphrasing, rewriting, summarizing, plagiarism checking, AI detection and humanizing, with no validity period.

Rephrase AI may suit users who want a web-based Pro plan with unlimited monthly rephrases, up to 10,000 characters per rephrase, and tone and style controls; it costs $29 a month.

Paraphrase Online has a yearly plan at $5.75 a year, billed at $69 annually, with 120,000 submissions, five modes, 365 days and 24/7 support.

Verdict

Choose QuillBot if you want a broad multilingual writing toolkit that follows you across desktop, mobile and browser workflows, or if your team needs shared administration. The main reason to look elsewhere is the combination of a tight free paraphrasing cap and an unpriced annual Premium plan: occasional users can start free, but frequent writers need clearer individual pricing before they can make a confident paid choice.

Verdict

QuillBot combines a free, limited paraphrasing tier with a wider set of writing tools and platform options.

Where Specifiction places it

Alternatives to QuillBotAll alternatives →