Last updated: January 2026

What Is QuillBot?

Writing is rewriting—but the rewriting process can be tedious and time-consuming. QuillBot is an AI writing assistant that wraps paraphrasing, summarizing, grammar checking, plagiarism detection, and translation into a single lightweight workspace. Think of it as a comprehensive writing studio that can rephrase your sentences, condense lengthy reports into key takeaways, and flag potential plagiarism before you hit publish.

The platform runs in your browser, integrates with Google Docs and Microsoft Word, and offers a Chrome extension that works across virtually any website. Behind the scenes, a large language model processes your text in real-time, offering alternatives and suggestions that maintain meaning while improving clarity, style, or length.

For students refining essays, marketers crafting copy, researchers summarizing papers, or professionals polishing emails, QuillBot removes friction from the writing process without requiring you to start from scratch or hire an editor.

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Key Features Explained

Paraphraser with Multiple Modes

QuillBot's flagship feature is its Paraphraser, offering up to 11 distinct modes to transform your text:

Standard: Balanced rewrites that preserve meaning with moderate changes.

Fluency: Focuses on natural-sounding, readable output.

Formal: Elevates tone for professional or academic contexts.

Creative: Takes more liberties for engaging, varied phrasing.

Shorten: Condenses text while maintaining core meaning.

Expand: Adds detail and elaboration to brief content.

Free users can process 125 words per run with access to two modes. Premium subscribers get unlimited input, all modes, plus a synonym slider to control vocabulary variation and "Freeze Words" to lock terms that shouldn't change (like brand names or technical terminology).

Summarizer for Long-Form Content

Drop an article, research paper, meeting transcript, or lengthy email into the Summarizer. Choose between paragraph output (flowing prose) or key-sentence format (bullet-point highlights). The AI identifies main points and condenses content while preserving essential information.

Free users can summarize up to 1,200 words. Premium raises the cap to 6,000 words—enough to process full research papers or chapter-length documents without splitting them into chunks.

Flow: Full-Screen Writing Space

Flow is QuillBot's dedicated writing environment that bundles all tools into a single workspace. Features include:

Writing templates: Pre-structured formats for essays, emails, reports, and more.

Real-time web research: Search and cite without leaving the editor.

AI feedback: Suggestions for improvement as you write.

Collaboration: Share documents with teammates for review and editing.

Flow turns QuillBot from a utility into a lightweight alternative to full word processors for focused writing tasks.

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Grammar and Style Checker

Beyond paraphrasing, QuillBot catches spelling errors, punctuation mistakes, subject-verb agreement issues, and common grammar problems. The checker also surfaces readability insights and tone suggestions—is your email too casual? Is your report too dense?

Because the checker lives in the Chrome extension, corrections appear across Gmail, LinkedIn, Notion, Slack, and hundreds of other web applications. You don't need to copy text into a separate tool; suggestions appear where you write.

Plagiarism and AI Detection Suite

Premium users can scan up to 100 pages monthly against academic databases and web sources. The plagiarism checker highlights potential matches and provides source links, helping you catch accidental similarity before professors, editors, or search engine algorithms do.

The AI Detector analyzes text for patterns characteristic of machine-generated content. Useful for educators checking student work or content creators ensuring their output reads as human-written.

Citation Generator and Translator

Academic writers appreciate the Citation Generator, which supports over 1,000 citation styles including APA, MLA, Chicago, and Harvard. Enter source details or paste a URL, and QuillBot formats the reference correctly.

The built-in Translator handles 45 languages, useful for quick translations without switching to a dedicated tool. Both features sit in the same dashboard as other writing utilities.

Real-World Use Cases

Academic Writing

Students use QuillBot to rephrase research findings in their own words, avoid unintentional plagiarism, and meet word count requirements through the Expand mode. The Citation Generator streamlines bibliography creation.

Content Marketing

Marketers repurpose content across channels—turning a blog post into email copy, social posts, or ad variations. Different paraphrasing modes help adjust tone for different audiences without rewriting from scratch.

Professional Communication

Professionals polish emails, reports, and proposals. The Formal mode elevates casual drafts; the Shorten mode tightens wordy passages. Grammar checking catches errors before important messages go out.

Research and Summarization

Researchers condense lengthy papers into digestible summaries. The Summarizer extracts key findings from multiple sources, accelerating literature reviews and research synthesis.

For AI-powered ad copy specifically, see AdCreative.ai. For cold email writing in sales contexts, see SmartReach AI.

Pricing (2026)

See official pricing for current rates.

Free — $0 forever. Two paraphrasing modes, 125-word limit per paraphrase, 1,200-word summarizer, basic grammar checking. Genuinely useful for light usage.

Premium Monthly — $19.95/month. Unlimited paraphrasing with all 9+ modes, custom mode creation, 6,000-word summarizer, plagiarism checker (100 pages/month), AI detector, priority support.

Premium Annual — $99.95/year (~$8.33/month). Same features as monthly with significant savings. Three-day money-back guarantee.

Team Plan — From $7.50/user/month (billed annually) for 5-10 seats. Tiered discounts available: ~$6.67 for 11-50 seats, ~$5.83 for 51+ seats. Includes admin controls and centralized billing.

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Pros and Cons

What We Like

11 paraphrasing modes for different tones and purposes

Chrome extension works across virtually any website

Plagiarism checker included with Premium (100 pages/month)

Affordable annual pricing ($99.95/year vs. competitors at $150+)

Citation generator with 1,000+ academic styles

6,000-word summarizer handles full research papers

Freeze Words feature protects brand names and terminology

No credit card required for free tier

What Could Be Better

125-word limit on free paraphraser feels restrictive

AI Detector can mislabel hybrid human/AI content

No offline mode—requires internet connection

Premium required for most valuable features

Paraphrased content occasionally needs manual refinement

QuillBot vs. Alternatives

vs. Grammarly: Grammarly excels at grammar correction and style suggestions with deeper contextual analysis. QuillBot is stronger at paraphrasing, summarizing, and content transformation. Many writers use both.

vs. Wordtune: Wordtune focuses on sentence-level rewrites with a simpler interface. QuillBot offers more modes, document-level features, and additional tools (plagiarism, citations, translation).

vs. ChatGPT: ChatGPT is more versatile for general AI tasks and creative generation. QuillBot is purpose-built for writing refinement with specialized modes and integration into existing workflows.

vs. Jasper: Jasper generates marketing copy from scratch. QuillBot refines and improves existing writing. Different use cases—Jasper for creation, QuillBot for editing.

vs. Copy.ai: Copy.ai targets marketing teams with templates for ads, emails, and social posts. QuillBot is more versatile for academic, professional, and general writing.

For SEO-focused content optimization, see Alli AI or Rank Prompt.

Tips for Best Results

Match mode to purpose: Use Formal for professional contexts, Creative for marketing, Shorten for tight word limits.

Review AI output: Paraphrasing occasionally changes meaning subtly. Always verify accuracy.

Use Freeze Words: Lock brand names, technical terms, and proper nouns to prevent unwanted changes.

Combine tools: Summarize long content, then paraphrase the summary for your specific audience.

Install the extension: Grammar and style suggestions everywhere you write multiplies value.

FAQ

Is QuillBot safe for academic papers?

Yes. Documents are processed on encrypted servers and not shared publicly. The plagiarism checker helps ensure originality. However, always review paraphrased text to ensure citations and meaning remain intact—professors expect your understanding, not just rephrased sources.

Can I use QuillBot inside Google Docs?

Yes. Install the Google Workspace add-on or Chrome extension, sign in, and the QuillBot widget appears beside your document. Paraphrase, check grammar, and summarize without leaving Docs.

How accurate is the AI Detector?

Independent tests show the detector catches raw AI-generated text effectively but can mislabel hybrid content (human writing edited by AI). Treat results as guidance rather than definitive verdict—false positives occur.

Does the plagiarism checker cost extra?

No. It's bundled with Premium, offering 100 pages of scanning monthly. Each page equals approximately 250 words.

What happens if I cancel Premium?

Your account reverts to the Free plan. All documents remain accessible, but advanced features (extra modes, unlimited words, plagiarism checker) become unavailable.

Is QuillBot better than ChatGPT for writing?

Different tools for different tasks. ChatGPT generates content from prompts; QuillBot refines existing writing. For editing, paraphrasing, and style adjustment, QuillBot's specialized modes often outperform general-purpose AI.

Final Verdict

QuillBot isn't flashy, but it nails the fundamentals that matter for daily writing work: speed, versatility, and reasonable pricing. The paraphrasing modes genuinely produce different outputs, the summarizer handles real document lengths, and the Chrome extension integrates writing assistance everywhere you work.

For writers who spend significant time editing, rewriting, or condensing content, Premium pays for itself quickly in saved hours. The free tier is generous enough to evaluate whether QuillBot fits your workflow before committing.

If your writing process involves more rewriting than first drafts, QuillBot deserves a place in your toolkit.

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