QuillBot vs Grammarly vs Wordtune vs Rytr

Written head to head: Grammarly vs QuillBot, with when to choose each side.

Compared on	QuillBot Free plan · from $8.33/mo VisitRemove	Grammarly Free plan · from $12/member/mo VisitRemove	Wordtune Free plan · from $4.89/mo VisitRemove	Rytr Free plan VisitRemove
What it is	AI paraphrasing, grammar checking and summarizing tools for writers	AI writing assistant for grammar, tone, rewrites and text generation	AI writing assistant for rewriting, summarizing and grammar checks	AI writing assistant with templates, tones and a plagiarism checker
Free plan	Paraphraser in Standard and Fluency modes, up to 125 words at a time; Summarizer up to 1,200 words; Grammar Checker, AI Detector, Citation Generator, Translate and the extensions; a limited number of AI Chat queries a day	Spelling, grammar and tone feedback, plus 100 AI prompts (the plans page does not state a period for the free prompts).	10 rewrites and AI suggestions per day, 3 AI summaries per month, unlimited spelling and grammar checks.	10K characters per month, 1 language, no Tone Match, no plagiarism checks, no Chrome extension.
Cheapest paid plan	$8.33/mo billed annually (Premium)QuillBot pricing	$12/member/mo billed annually (Pro)Grammarly pricing	$4.89/mo billed annually (Advanced)Wordtune pricing	Not publishedRytr pricing
What it covers	$99.95 billed every 12 months; also $39.95 billed every 3 months ($13.31/month).	$144 per member per year on annual billing; quarterly option $60 per member every three months; 2,000 AI prompts per member per month.	30 rewrites and AI suggestions per day, 15 AI summaries per month.	Not stated
Free trial	None stated	7-day free trial of Pro	3-day free trial ('from the date of purchase')	None stated
Platforms	Web, Chrome extension, macOS, iOS, Android	Windows, macOS, Chrome extension, iOS, Android	Web, Chrome extension, iOS	Web, Chrome extension
Integrations (vendor's figure)	Not stated	Not stated	Not stated	Not stated
Open source	No	No	No	No
Good for	Rewording sentences in an email or report for clarity Summarizing long articles before a meeting Checking a draft's grammar and generating citations	Proofreading emails and documents before sending Adjusting the tone of client messages Checking reports for plagiarism before publishing	Rephrasing emails to sound clearer or more formal Summarizing long articles or videos before reading in full Checking spelling and grammar in everyday writing	Drafting short marketing and business copy from templates Writing first drafts in a chosen tone of voice Managing content for several brands with separate tone profiles (Premium)
Watch out for	Free Paraphraser offers only the Standard and Fluency modes, up to 125 words at a time Plagiarism Checker is Premium-only, up to 25,000 words a month No free trial; refunds only where the law requires (14 days in the EEA and UK)	Free plan includes 100 AI prompts; Pro allows 2,000 per member per month Plagiarism and AI-text detection require Pro Unlimited prompts, BYOK encryption and custom roles are Enterprise-only	Free plan allows 10 rewrites per day and 3 summaries per month Advanced plan caps rewrites at 30 per day and summaries at 15 per month No refunds; subscriptions can be cancelled before the next billing cycle	Free plan is capped at 10K characters per month with no plagiarism checks Unlimited plan supports 1 language and 1 Tone Match Chrome extension and 35+ languages require Premium
Made by	Learneo, Inc.	Superhuman Platform (company formerly named Grammarly)	AI21 Labs	Rytr

Entry prices are the cheapest paid plan, as each vendor publishes it; “What it covers” says what that price is per (a user, a channel, a brand, a number of contacts). The sources are listed on each tool's page.

Every tool in AI writing tools is on its category page, with the written head-to-heads on Compare.