Quillbot
Write, design, build, and so much more with AI tools for every task.
Overview
Quillbot started in 2017 as a dorm-room project to help English language learners paraphrase text, and has since grown into a full AI writing platform under Learneo (formerly Course Hero), which acquired plagiarism-detection company Scribbr and integrated LanguageTool along the way. Today it serves 35+ million monthly writers across 180+ countries, processing over 5 billion paraphraser inputs a year.
Beyond its original paraphraser, Quillbot now bundles a grammar checker, summarizer, AI content detector, plagiarism checker, citation generator, AI humanizer, translator, and even an AI chat and image generator, all under one subscription. It's positioned less as a single-purpose tool and more as an all-in-one writing and creation suite, with heavy adoption in academic and educational settings through its institutional partnerships.
Key Features
Paraphraser: Multiple rewriting modes, including Standard, Fluency, Formal, and Creative.
Grammar Checker: Catches spelling, punctuation, and style issues.
Summarizer: Condenses long text down to the essentials.
AI Content Detector: Flags likely AI-generated text.
Plagiarism Checker: Scans for copied content.
AI Humanizer: Rewrites AI-sounding text to read more naturally.
Citation Generator: Generates citations in APA, MLA, Chicago, and other styles.
Chrome & Docs Integration: A Chrome extension plus Google Docs and Microsoft Word integration.
Pricing
Starting price
$99.95/yr
Free: $0/month. Standard/Fluency paraphrase modes (125 words/run), grammar checker, AI detector, summarizer up to 1,200 words, citation generator, translator.
Premium (Monthly): $19.95/month. Removes word limits, unlocks all paraphrasing modes, full AI detector and humanizer access.
Premium (Semi-Annual): $13.31/month, billed at $39.95 every 3 months.
Premium (Annual): $8.33/month, billed at $99.95/year.
Team (2-10 seats): $7.50/seat/month, billed at $89.95/seat/year, plus writer-management dashboards.
Team (11-50 seats): $6.66/seat/month, billed at $79.95/seat/year.
Team (51+ seats): $5.83/seat/month, billed at $69.95/seat/year.
Disclaimer: pricing may change, confirm on Quillbot's own pricing page before buying.
Pros
High Satisfaction: Very high user satisfaction, 4.8/5 on Trustpilot (6,700+ reviews) and 4.4/5 on G2.
All-In-One Subscription: One subscription covers paraphrasing, grammar, detection, and citations instead of juggling separate tools.
Seamless Integration: Seamless integration with Google Docs, Microsoft Word, and Chrome for editing as you type.
Usable Free Tier: A usable free tier (paraphrase modes, grammar checker, AI detector, summarizer up to 1,200 words, citation generator, translator), not just a locked demo.
Established Track Record: Established since 2017, with real scale (35M+ monthly users).
Cons
Free Word Cap: The free tier's paraphraser is capped at 125 words per run; Premium removes this limit, so meaningful use effectively requires paying.
Robotic Output: Paraphrased output can read as robotic or mechanical at higher Creative/synonym-heavy settings, a recurring complaint in user reviews.
Billing Complaints: Negative Trustpilot reviews cluster around auto-renewing annual billing, difficulty cancelling before renewal, and slow refund support.
Inconsistent Detector: AI Content Detector accuracy is inconsistent, around 78% in third-party testing, and shouldn't be treated as a reliable sole signal.
What Makes It Unique
The Bundle: Quillbot's edge isn't any one tool doing something no one else can, it's the bundle. Grammarly and Wordtune each do parts of this well, but neither pairs a paraphraser with an AI detector, plagiarism checker, and citation generator inside one subscription the way Quillbot does, with deep ties to academic institutions via the Scribbr acquisition.
Kay Score
7.5
/ 10
Tool Information
Pricing
$99.95/yr
Category
Writing & Content
Platform
Web / iOS / Android
Last Updated
