Quillbot capabilities
5 mapped capabilities, each graded and dated. The map shows what Quillbot can do; the audit shows whether it’s worth consolidating — and a guide shows how to move.
Capabilities
AI Paraphraser (rewrite modes)
canonicalverified todayQuillBot's signature tool: rewrites text to improve fluency, vocabulary, tone, and style while preserving meaning. Users pick a rewriting mode and tune how much of the text changes via a Synonym Slider, then click any word for AI thesaurus synonym alternatives.
AI content detector
canonicalverified todayAnalyses text to estimate how much was generated by AI models such as ChatGPT, GPT-5, GPT-4, Gemini, Claude, and Llama, returning a 0-100% likelihood score. Rather than a single AI-or-human verdict, it classifies text into stages: generated by AI, generated and refined by AI, written by a human and refined by AI, or written by a human.
Grammar, spelling & punctuation checker
canonicalverified todayAI grammar checker that detects and corrects grammar, spelling, and punctuation errors (subject-verb agreement, word misuse, comma splices, semicolon placement) and surfaces clarity, fluency, and engagement suggestions.
Plagiarism checker
canonicalverified todayCompares text against a large database of online and academic sources and returns a plagiarism score plus a detailed report with source links and flagged passages that may need citations.