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QuillBot
QuillBot · Chicago, Illinois, United States · founded 2017
What it is
QuillBot is a collection 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 humanizing and AI Detector access. Premium lists paraphrasing in 23 languages and translation into 40+ languages. QuillBot offers desktop and mobile apps for macOS, Windows, Android, and iOS, as well as Chrome, Edge, and Safari extensions. Its desktop app can appear as a widget in apps such as Slack, Notes, and Messages; Premium also lists a Word add-in. A single subscription works across its apps and platforms, and Premium can be used on up to 10 devices at once. Team plans add writer-management dashboards and centralized billing. QuillBot says it began in 2017 as a paraphrasing tool created to help English-language learners.
For and against
For
- Writing tools include paraphrasing, grammar, and citation generation.
- Available across desktop, mobile, and browser extensions.
- Premium lists translation into 40+ languages.
- Team plans include dashboards and centralized billing.
Against
- Free paraphrasing is limited to 100 words in two modes.
- Free access to humanizing and AI Detector is limited.
The verdict
QuillBot brings multiple writing tools together with apps, extensions, and team features. The Free plan has a defined paraphrasing limit, while Premium pricing is not provided here.
Who it suits
QuillBot may suit individuals looking for writing and language tools across devices, as well as teams that need writer-management dashboards and centralized billing. Its free paraphrasing allowance is limited to 100 words per use.
Plans and prices
Free
Paraphrase up to 100 words · 2 modes · basic grammar · limited humanizer
Read 14 Oct 2026 · quillbot.com
Premium
Unlimited paraphrasing · 9 modes · advanced grammar · plagiarism checking up to 25,000 words/month
Read 14 Oct 2026 · quillbot.com
Team Plan (51+ seats)
All Premium features · writer-management dashboards · centralized billing
Read 20 Oct 2026 · quillbot.com
Team Plan (11–50 seats)
All Premium features · writer-management dashboards · centralized billing
Read 20 Oct 2026 · quillbot.com
Team Plan (2–10 seats)
All Premium features · writer-management dashboards · centralized billing
Read 20 Oct 2026 · quillbot.com
Team
Team usage metrics · user management dashboard · centralized billing · data control
Read 14 Oct 2026 · quillbot.com
On the record
- 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.quillbot.com · read 7 Oct 2026
- Acquisition news
- Course Hero announced its acquisition of QuillBot alongside CliffsNotes on August 19, 2021.prnewswire.com · read 14 Oct 2026
- AI Chat
- AI Chat is free up to 20 queries per day for new users and unlimited for Premium users.help.quillbot.com · read 14 Oct 2026
- AI Detector
- The AI Detector analyzes text for signals that it may have been generated by AI, including sentence-level analysis.play.google.com · read 14 Oct 2026
- API
- QuillBot states that it currently offers no B2B or B2C API.help.quillbot.com · read 14 Oct 2026
- Chrome extension
- The Chrome extension provides paraphrasing, grammar checking, humanizing, AI detection, chat and image tools in the browser.chromewebstore.google.com · read 14 Oct 2026
- Citation Generator
- QuillBot includes a citation generator among its writing and originality tools.quillbot.com · read 14 Oct 2026
- Company founding
- QuillBot says it began in 2017 in a college dorm when Anil Jason, Rohan Gupta and David Silin built the first Paraphraser.quillbot.com · read 14 Oct 2026
- Company history
- Quillbot’s About page says it began in 2017 as a paraphrasing tool created to help English-language learners with writing.quillbot.com · read 7 Oct 2026
- Company scale
- QuillBot's About page reports 35+ million monthly active writers, 225 employees and 5.3 billion annual Paraphraser inputs.quillbot.com · read 14 Oct 2026
- 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.quillbot.com · read 14 Oct 2026
- Data handling
- QuillBot says connections are encrypted, it does not sell user data, and Team Plan text inputs are not used for training.quillbot.com · read 14 Oct 2026
- Data privacy
- Quillbot says it does not sell user content or data, encrypts connections, and restricts access to customer data.quillbot.com · read 7 Oct 2026
- Documentation and support
- The Help Center contains product guides, billing, extensions and apps, troubleshooting, privacy, safety and business-plan documentation.help.quillbot.com · read 14 Oct 2026
- Free limits
- The Free plan allows paraphrasing up to 100 words in two modes, with limited humanizing and AI Detector access.quillbot.com · read 7 Oct 2026
- 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.help.quillbot.com · read 14 Oct 2026
- Grammar Checker
- Its Grammar Checker identifies grammar, spelling and punctuation problems and offers corrections.quillbot.com · read 14 Oct 2026
- Headquarters and size
- LinkedIn lists QuillBot as privately held, headquartered in Chicago and employing 201–500 people.linkedin.com · read 14 Oct 2026
The review
QuillBot is a cross-platform writing suite for paraphrasing, checking, summarizing, and related tasks. It suits writers who want several tools in one workflow, especially across devices. The Free plan works for short passages; its 100-word paraphrasing cap makes it a poor fit for sustained rewriting.
Overview
QuillBot began in 2017 as a paraphrasing tool for English-language learners and has expanded into tools for writing, communication, design, coding, and collaboration. That breadth is its central appeal: writers can pair rewriting with grammar, plagiarism, and AI checks, summaries, and citation generation. It reports more than 35 million monthly active writers and 225 employees.
Multilingual users get a more substantial case for the suite on Premium: its comparison includes paraphrasing in 23 languages and translation into more than 40. The Free plan's two paraphrasing modes and short word allowance make it a limited test of that broader offering.
Key features
- Writing toolkit: Paraphrasing is joined by grammar and plagiarism checking, AI detection and humanizing, summarizing, and citation generation. This is useful for users who want supporting checks alongside revisions; it is less compelling for someone who needs only one of those jobs.
- Cross-app access: QuillBot offers desktop and mobile apps for macOS, Windows, Android, and iOS, plus Chrome, Edge, and Safari extensions. Its desktop widget can appear in apps such as Slack, Notes, and Messages, and Premium includes a Word add-in. One subscription works across apps, with Premium usable on up to 10 devices at a time, a practical advantage for people who switch between phone and computer.
- Team administration: Team plans add writer-management dashboards and centralized billing to Premium features. They also include priority assistance and account-management support. QuillBot says it does not train on Team Plan users' text inputs, a distinction that may matter to organizations; other users' inputs and usage data may be used to provide and personalize the service and train improvements.
- Privacy and security: QuillBot says it does not sell user content or data, encrypts connections, and limits access to customer data. It says it works toward GDPR compliance, abides by the CCPA, complies with PCI DSS, and is verified through CASA Tier 2. These are relevant assurances, though users should weigh the stated use of non-Team inputs when deciding what to submit.
Pricing
QuillBot is freemium. Free costs nothing, billed per month. It includes paraphrasing up to 100 words in two modes, basic grammar, limited humanizing and AI Detector access, and basic summaries. That is a workable entry point for occasional short edits, but the cap quickly rules it out for revising full paragraphs or regular drafting.
Premium is billed annually, but no price is provided; treat it as custom pricing when comparing paid options. Its listed allowances include 25,000 plagiarism-checker words per month, 6,000 Summarizer words, 300 AI images per month, and 100 MB of Flow storage, alongside the broader Premium feature set. Those quotas give frequent users concrete capacity to assess, but a missing price makes the cost-benefit decision harder.
Team Plan pricing is seat-tiered and billed every 12 months. The 2–10-seat plan is $750 a year, billed €89,95 every 12 months; 11–50 seats is $666 a year, billed €79,95 every 12 months; and 51+ seats is $583 a year, billed €69,95 every 12 months. Each includes all Premium features, writer-management dashboards, and centralized billing. The lower per-year figure for larger tiers may suit established teams, while the minimum of two seats and annual billing make these plans a mismatch for a lone writer or a team wanting monthly terms.
Platforms
QuillBot supports web, macOS, Windows, Android, and iOS, with Chrome, Edge, and Safari extensions. The mix covers both desktop and mobile work, and app integrations extend access into Slack, Notes, and Messages. It is a strong fit for people who move between platforms; users looking for a Linux app will not find one among its listed platforms.
Who it's for
QuillBot makes most sense for students, multilingual writers, and regular content creators who benefit from having rewriting, checks, summaries, and citations together. Teams may value centralized billing, writer dashboards, support, and the Team Plan input-training distinction. It is less suited to users who need generous free paraphrasing, a known Premium price before committing, or a single narrowly focused tool.
Pros and cons
- Pro: A broad set of writing and revision tools can cover several recurring tasks in one suite.
- Pro: Apps, browser extensions, a desktop widget, and a Word add-in support work across devices and common writing contexts.
- Pro: Team tiers combine Premium with centralized billing and writer-management tools.
- Con: Free paraphrasing stops at 100 words and two modes, limiting useful work on longer drafts.
- Con: Premium has no stated price, making it difficult to compare the paid offer on cost.
- Con: Annual team billing and a two-seat minimum exclude solo buyers and teams that need shorter commitments.
Alternatives
For a broader comparison of rewriting and writing software, browse AI Paraphrasing Tools, Paraphrasing Tools, AI Summarizers, AI Writing Tools, AI Grammar Checkers, or AI writing assistants.
- StealthWriter is a freemium alternative for users prioritizing humanization and AI scans, with daily limits and a 1,000-word input cap on Free.
- RewritePal offers a 10,000-character free rewrite limit and works across more listed platforms, including Linux.
- Wordtune may suit users seeking a free trial and a free tier with daily rewrites, AI suggestions, and three monthly AI summaries.
- Paraphraser.io is another freemium option, with short-validity paid plans offering stated word and paraphrasing limits.
- Phrasit is a web-based freemium alternative.
- Sapling may be preferable where API, self-hosted, or Windows availability is important; its free tier includes AI detector and snippet allowances.
- AnswerThis AI Paraphraser is a freemium web option whose Pro plan is priced at $35 a month per seat.
- Clever AI Humanizer is a free web alternative with requests up to 3,000 words and no fixed monthly word allowance, subject to service availability.
Verdict
Choose QuillBot if you want a multilingual writing suite that carries paraphrasing and related checks across desktop, mobile, and browser workflows, or if your team needs shared administration. Look elsewhere if a generous free rewriting allowance or a clearly priced individual Premium plan is essential: the Free cap is restrictive, and the paid individual cost is difficult to judge.