What Is QuillBot?
QuillBot is an AI-powered writing platform best known for its paraphrasing tool, which rewrites sentences and paragraphs while preserving their meaning. Beyond paraphrasing, it also includes a grammar checker, plagiarism checker, text summariser, citation generator, and an AI content detector.
How QuillBot’s Paraphraser Works
Users paste text into the paraphraser and choose from several modes — Standard, Fluency, Formal, Academic, Creative, and more — each adjusting tone and sentence structure differently. The tool highlights changed words and offers alternative synonyms, giving users control over how heavily the text is reworded.
Is QuillBot Free?
QuillBot has a functional free tier with word-count limits and a restricted number of paraphrasing modes. QuillBot Premium removes these limits and unlocks all modes, the full grammar and plagiarism checkers, and faster processing.
QuillBot vs Grammarly
Grammarly is generally stronger for pure grammar and tone checking, while QuillBot’s core strength is paraphrasing and rewriting — many users run text through both tools for different purposes, since they serve slightly different jobs in the writing process.
Is QuillBot Detected as AI?
Heavily paraphrased text can be flagged by AI detection tools, particularly in academic settings, so it’s important to use QuillBot to refine your own writing rather than to disguise AI-generated content — most universities have specific policies on this worth checking first.
Final Thoughts
QuillBot is one of the most established AI writing tools available, genuinely useful for students, professionals, and non-native English speakers looking to improve clarity and vary sentence structure — best used as an editing aid rather than a way to generate original content from scratch.