Quillbot

AI-powered writing assistant that paraphrases, checks grammar, summarizes, translates, and detects AI content.

quillbot.com

Verified API available ~4M monthly visits

Quick facts
What is it	AI-powered writing assistant that paraphrases, checks grammar, summarizes, translates, and detects AI content.
Pricing	Paid — from $19.95/mo
Free tier	Yes
Platform	Web Application
API	Yes
Best for	Rewriting essays and research papers to improve flow, Checking and polishing emails or reports for work
Domain registered	2017

Data updated Aug. 1, 2026

What does Quillbot do?

Quillbot is an AI-powered writing suite designed to help you write, edit, and improve text. Its core tool is a paraphraser that rewrites sentences and paragraphs. You can choose from different modes like Standard, Fluency, Formal, or Creative to get the right tone. Beyond paraphrasing, it bundles a full set of writing utilities including a grammar checker, a summarizer to condense long texts, a translator, and an AI content detector. It works as a web app and also offers a Chrome extension, letting you use its tools directly in your browser on sites like Google Docs or social media.

What makes Quillbot useful is how it bundles many common writing tasks into one place. Instead of switching between different websites for a thesaurus, a grammar tool, and a summarizer, you can handle it all here. The interface is straightforward: you paste your text, select a tool, and get instant results. The paraphrasing tool is particularly flexible, allowing for word-by-word synonym changes or more substantial sentence restructuring.

This tool is a good fit for students working on papers, professionals drafting documents or emails, and content creators who need to rephrase ideas. It helps when you're stuck on a sentence and need a fresh way to say something, when you need to quickly understand a long article, or when you want to ensure your writing is grammatically sound and original. It's a practical assistant for everyday writing challenges.

AI Summarizer Grammar Checker Rewriter Translation Writing Assistants

#ai detector#ai writing#grammar check#paraphrasing#productivity#summarizer#translation

Key features

What makes it stand out

Paraphrases text in multiple styles to improve clarity and avoid repetition

Checks grammar and spelling to correct writing errors

Summarizes long articles and documents into key points

Translates text between over 30 languages

Detects AI-generated content and checks for plagiarism

Who is Quillbot for?

Who benefits most from this tool

Rewriting essays and research papers to improve flow

Checking and polishing emails or reports for work

Summarizing long articles for quick understanding

Pricing

Free tier available — start without a credit card

Monthly

$19.95/month

Unlimited Paraphraser words
Standard, Fluency, Expand, Shorten, Formal, Simple, Creative, Custom modes
4-sentence processing capacity
Unlimited Freeze words and phrases
Unlimited Summarizer words
Unlimited Grammar Checker
Unlimited AI Detector words
Unlimited AI Humanizer words
Unlimited AI Chat messages
Unlimited AI Image Generations
Unlimited Plagiarism Checker pages
Unlimited Citation Generator
Faster processing speed
Advanced Grammar rewrites
Compare Modes (Desktop only)
Plagiarism Checker
Tone detection

Semi-Annual

$16.66/month billed yearly

Unlimited Paraphraser words
Standard, Fluency, Expand, Shorten, Formal, Simple, Creative, Custom modes
4-sentence processing capacity
Unlimited Freeze words and phrases
Unlimited Summarizer words
Unlimited Grammar Checker
Unlimited AI Detector words
Unlimited AI Humanizer words
Unlimited AI Chat messages
Unlimited AI Image Generations
Unlimited Plagiarism Checker pages
Unlimited Citation Generator
Faster processing speed
Advanced Grammar rewrites
Compare Modes (Desktop only)
Plagiarism Checker
Tone detection

Annual

$8.33/month billed yearly

Unlimited Paraphraser words
Standard, Fluency, Expand, Shorten, Formal, Simple, Creative, Custom modes
4-sentence processing capacity
Unlimited Freeze words and phrases
Unlimited Summarizer words
Unlimited Grammar Checker
Unlimited AI Detector words
Unlimited AI Humanizer words
Unlimited AI Chat messages
Unlimited AI Image Generations
Unlimited Plagiarism Checker pages
Unlimited Citation Generator
Faster processing speed
Advanced Grammar rewrites
Compare Modes (Desktop only)
Plagiarism Checker
Tone detection

Trust & presence

Search presence Top 10k site

Domain Domain registered 2017

Gallery

Click any image to enlarge

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