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QuillBot
8.4/10
"Paraphrasing + AI Humanizer + Co-Writer—QuillBot is the all-in-one writing toolkit."
AI writing suite with 9+ paraphrasing modes, AI Humanizer, AI Detector, Co-Writer, grammar checking, and plagiarism detection.
Best for:StudentsContent WritersNon-Native SpeakersAcademic Researchers
Free / Premium $8.33/mo (annual) / Team from $2.91/user/mo
Verified Tool
About QuillBot
QuillBot is a comprehensive AI writing assistant trusted by millions. 9+ paraphrasing modes: Standard, Fluency, Formal, Simple, Creative, Academic, Expand, Shorten, and Custom. Creative+ mode for maximum rewriting. Synonym Slider controls vocabulary change intensity. Freeze Words keeps specific terms unchanged.
AI Humanizer transforms AI-generated text to sound natural by modifying word patterns, sentence lengths, and phrasing to bypass AI detection. AI Detector analyzes perplexity and burstiness to identify AI-generated content (free: 1,200 words, Premium: unlimited).
Co-Writer is a full workflow tool for drafting content—going beyond paraphrasing to help write complete pieces. AI Chat provides brainstorming, instant research support, and writing improvement suggestions.
Grammar Checker provides comprehensive writing scores across Grammar, Fluency, Clarity, Engagement, and Delivery with advanced style suggestions. Plagiarism Checker scans against billions of sources (25,000 words/100 pages per month on Premium). Summarizer condenses up to 6,000 words in bullet or paragraph format. Citation Generator supports APA, MLA, Chicago.
Translator supports multiple languages. Multilingual paraphrasing in English, French, Spanish, German. Chrome extension, Google Docs, and Microsoft Word integrations. Tone adjustment for context-appropriate writing.
Free: 125-word paraphrase limit, 2 modes (Standard/Fluency), basic grammar, 1,200-word summarizer/AI Detector, basic Humanizer. Premium ($19.95/mo or $13.31/mo semi-annual or $8.33/mo annual): unlimited words, all modes, full plagiarism (100 pages/mo), 6,000-word summarizer, unlimited AI Detector, advanced Humanizer. 3-day money-back guarantee, pause option available. Team ($2.91-3.75/user/mo annual): all Premium features, admin tools, centralized billing.
Key Features
9+ Paraphrasing Modes
AI Humanizer
AI Detector (Perplexity/Burstiness)
Co-Writer & AI Chat
Grammar Checker (5 Categories)
Plagiarism (100 pages/mo)
Chrome/Docs/Word Extensions
The Good
- AI Humanizer makes AI text sound natural
- Co-Writer is a full writing workflow
- Affordable annual pricing ($8.33/mo)
- Team plan from $2.91/user excellent value
The Not-So-Good
- 125-word free limit is very restrictive
- Can alter intended meaning on complex text
- AI Detector less accurate than dedicated tools
- Plagiarism check limited to 100 pages/mo
Editor's Review
Editor's Review (February 2026)
QuillBot has evolved from a paraphraser into a complete AI writing suite. The AI Humanizer is what makes it stand out in 2026—transforming AI-generated text to bypass detection. Co-Writer adds full drafting capability. Team plan pricing is excellent.
What We Love:
• AI Humanizer transforms AI text to sound authentically human
• Co-Writer goes beyond paraphrasing into full content drafting
• 9+ modes cover every writing scenario from academic to creative
• Team plan from $2.91/user/mo is exceptional value for organizations
What Could Be Better:
• Free tier's 125-word limit makes it nearly unusable for real work
• Paraphrasing complex academic sentences can alter meaning
• AI Detector is less accurate than dedicated tools like Originality.AI
• Plagiarism Checker limited to 100 pages/month even on Premium
Who Should Use It:
Students paraphrasing for academic papers, content writers refreshing existing content, and non-native speakers improving fluency. The AI Humanizer is essential for anyone using AI-generated content professionally.
Frequently Asked Questions
Q:What is the AI Humanizer?
AI Humanizer transforms AI-generated text (from ChatGPT, Claude, etc.) to sound naturally human. It modifies word patterns, sentence lengths, and phrasing to bypass AI detection tools while preserving meaning and quality.
Q:What is Co-Writer?
Co-Writer is a full workflow tool for drafting content—not just paraphrasing but actually writing complete pieces, providing suggestions, and helping structure your work from start to finish.
Q:How much does QuillBot cost?
Free: 125-word limit, 2 modes. Premium: $19.95/mo, $13.31/mo semi-annual, or $8.33/mo annual. All modes, unlimited words, plagiarism (100 pages/mo), AI Humanizer, AI Detector. Team: $2.91-3.75/user/mo annual.
Q:Is QuillBot good for academic writing?
Yes. Academic mode targets scholarly conventions. Citation Generator supports APA, MLA, Chicago. Co-Writer helps structure papers. However, always review paraphrased academic content—complex technical meaning may shift.
Tool Information
Pricing ModelFreemium
Starting PriceFree / Premium $8.33/mo (annual) / Team from $2.91/user/mo
CategoryWriting & Content
Last UpdatedFeb 2026
