Grammarly vs QuillBot

Pick up to 4 tools and see their free plans, entry prices, platforms and limits in one table. Every fact comes from each vendor's own pages, checked 16 October 2026.

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

Compared on	Grammarly Free plan · from $12/member/mo Visit Remove	QuillBot Free plan · from $8.33/mo Visit Remove
What it is	AI writing assistant for grammar, tone, rewrites and text generation	AI paraphrasing, grammar checking and summarizing tools for writers
Free plan	Spelling, grammar and tone feedback, plus 100 AI prompts (the plans page does not state a period for the free prompts).	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
Cheapest paid plan	$12/member/mo billed annually (Pro)Grammarly pricing	$8.33/mo billed annually (Premium)QuillBot pricing
What it covers	$144 per member per year on annual billing; quarterly option $60 per member every three months; 2,000 AI prompts per member per month.	$99.95 billed every 12 months; also $39.95 billed every 3 months ($13.31/month).
Free trial	7-day free trial of Pro	None stated
Platforms	Windows, macOS, Chrome extension, iOS, Android	Web, Chrome extension, macOS, iOS, Android
Integrations (vendor's figure)	Not stated	Not stated
Open source	No	No
Good for	Proofreading emails and documents before sending Adjusting the tone of client messages Checking reports for plagiarism before publishing	Rewording sentences in an email or report for clarity Summarizing long articles before a meeting Checking a draft's grammar and generating citations
Watch out for	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 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)
Made by	Superhuman Platform (company formerly named Grammarly)	Learneo, Inc.

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.

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