QuillBot
AI-powered writing and paraphrasing suite
Founded
2017
Starting Price
$0
Category
AI Writing & Content
Last updated February 10, 2026
About QuillBot
QuillBot is an AI-powered writing platform that helps users paraphrase, check grammar, summarize, translate, and generate content. With over 4.5 million users, it offers a comprehensive suite of writing tools including a paraphraser with multiple modes, grammar checker, plagiarism checker, citation generator, and AI humanizer � available as a web app and browser extension.
Pros & Cons
Pros
- Excellent paraphrasing with 10+ modes and a synonym slider for fine-tuned control
- Generous free tier with unlimited daily paraphrases (125 words at a time)
- Seamless browser extension works directly in Google Docs, email, and other web apps
- Comprehensive writing suite � grammar, plagiarism, citations, summarizer all in one place
- Affordable annual pricing compared to alternatives like Grammarly
Key Features
AI Paraphraser
Rephrase text in multiple modes (Standard, Fluency, Creative, and 7+ more) with a synonym slider for fine-tuned control
Grammar Checker
Detects and corrects grammar, punctuation, and spelling errors in real-time
Plagiarism Checker
Scans text against billions of sources to detect potential plagiarism and ensure originality
AI Humanizer
Rewrites AI-generated text to sound more natural and human-written
Summarizer
Condenses long articles and documents into key points or short paragraphs
Citation Generator
Automatically generates citations in APA, MLA, Chicago, and other academic formats
Translator
Translates text between 30+ languages while preserving meaning and context
Pricing
Free
$0
- Paraphrase up to 125 words
- 2 paraphrasing modes (Standard, Fluency)
- Grammar checker
- Summarizer
- Translator
Best For
Academic Writing
Students use QuillBot to paraphrase sources, check for plagiarism, generate citations, and improve grammar in essays and research papers
Content Repurposing
Marketers and bloggers rephrase existing content for different channels or audiences without duplicating text
ESL Writing Support
Non-native English speakers improve fluency and grammar in professional emails, documents, and applications
AI Content Refinement
Writers use the AI Humanizer and paraphraser to polish AI-generated drafts into natural-sounding content
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