QuillBot
Paraphrase text in unlimited style modes while checking it for grammar errors, plagiarism, and AI-detection risk in one pass. AI Detector and AI Humanizer are now bundled into every premium plan.
Best For
Rephrasing existing text into a cleaner or more formal version without rewriting from scratch
Standout Feature
Eight distinct rewriting modes, from Academic tone to strict Shorten and Expand length controls
Verdict
The go-to for students and non-native English writers polishing a draft, not for generating new content.
Alternatives
Overview
QuillBot is a widely used AI paraphrasing and summarization tool, with over 35 million users, a scale that reflects its utility for a broad range of writing tasks where the goal is to rephrase existing text rather than create from scratch. Its paraphraser offers eight rewriting modes: Standard, Fluency, Formal, Academic, Simple, Creative, Shorten, and Expand. The Fluency mode is the commonly used for general editing; Academic mode is calibrated specifically for the tone and vocabulary of academic writing; Shorten and Expand provide concise controls for hitting word count targets. QuillBot's Summarizer distills long articles, papers, or documents into key points with adjustable output length.
The Grammar Checker functions similarly to Grammarly for error detection and correction. The Translator supports 45+ languages. The Citation Generator automatically formats citations in APA, MLA, and Chicago from URLs, DOIs, and ISBNs. Premium plans start at $8.33/month (billed annually).
QuillBot is extensively used by students, non-native English speakers, and academic writers who need help restructuring prose or hitting stylistic targets without changing the underlying meaning of the text.
Key Features
- Paraphraser (7 modes)
- Summarizer
- Grammar checker
- Plagiarism checker
- Citation generator
- • Best paraphrasing tool available
- • Extremely popular and trusted
- • Good free tier
- • Works across all writing tasks
- • Output can sometimes lose nuance
- • Plagiarism checker is weaker than Grammarly's
- • Paraphrasing ≠ writing from scratch
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