About QuillBot
QuillBot is a comprehensive AI writing suite used by students, professionals and businesses to rewrite, polish and verify text. It bundles a Paraphraser, Grammar Checker, Plagiarism Checker, AI Detector, AI Humanizer, Translator, Summarizer, Citation Generator, PDF tools and AI image generation into one workspace — helping writers improve clarity, avoid accidental plagiarism and detect AI-generated content.
Pricing
Check the official site for current plans and pricing.
Key features
- Paraphraser:: unlimited rewriting in 9 unique modes (plus custom modes), with a synonym slider, mode comparison and full history; works in 23 languages.
- Grammar Checker:: catches grammar, spelling and punctuation errors, with advanced recommendations (fix passive voice, reduce repetition, clarify) and tone insights.
- AI Detector:: free tool that scores text 0–100% AI-likelihood, distinguishes fully-AI vs human-with-AI-refinement, and highlights flagged sentences; supports ChatGPT, GPT-5, Claude and Gemini.
- AI Humanizer:: rewrites AI-generated text to sound more human, with a human score and tone insights.
- Plagiarism Checker:: 25,000 words/month of checks on Premium.
Pros & cons
Pros
- : unlimited rewriting in 9 unique modes (plus custom modes), with a synonym slider, mode comparison and full history; wo
- : catches grammar, spelling and punctuation errors, with advanced recommendations (fix passive voice, reduce repetition,
- : free tool that scores text 0–100% AI-likelihood, distinguishes fully-AI vs human-with-AI-refinement, and highlights fl
Cons
- Confirm plan limits and feature gates on the official pricing page
- Best results usually need correct setup and ongoing optimization
Integrations
- Extensions: Chrome browser extension, Microsoft Word and Google Docs integrations
- Platforms: web app
- desktop and mobile apps
- Writing workflow: pairs with the QuillBot Editor and QuillBot Flow for long-document drafting
QuillBot FAQ
What is QuillBot?
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