QuillBot

Free tier

AI paraphrasing and writing enhancement — rewrites sentences while preserving meaning.

Free tier available·All audiences·Powered by QuillBot

Key strengths

ParaphrasingGrammar checkingAI detectionPlagiarism checkingAI humanizerSummarizationCitation generationAI image generationTranslationPDF toolsWide platform/extension support

Free tier + paid plans · from $10 USD/mo

Chicago, US

Founded 2017

Facts verified against quillbot.com on Oct 6, 2026

Recent changes

Oct 6, 2026Plans updated: Free tier available; Premium plan offered. Pricing details not specified on homepage.

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QuillBot is a freemium AI writing platform headquartered in Urbana-Champaign, United States, offering a suite of NLP-powered tools including paraphrasing, grammar checking, AI detection, plagiarism checking, AI humanization, summarization, citation generation, AI image generation, translation, and PDF tools. It targets a broad audience of writers, students, academics, professionals, job seekers, and business owners. The platform supports integrations across Chrome, Edge, and Safari browser extensions, Android and iOS mobile apps, Windows and macOS desktop clients, and a Microsoft Word add-in. A free tier is available alongside a Premium plan; specific pricing figures are not publicly listed on the homepage.

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