AI Writing Assistants

QuillBot

Best-in-class AI paraphraser with grammar checker, plagiarism detector, summarizer, and AI humanizer in one suite

Q

4.4

Rating

$4.17/mo

Price

Yes

Free plan

50M+

Users

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Key features

Pros & cons

Pros

  • Best paraphraser on the market in our hands-on testing across 50+ samples
  • Free plan is genuinely usable for short-form work (125 words, 2 modes, no card)
  • Browser extension and Microsoft Word add-in keep you inside your existing workflow
  • Bundles plagiarism + grammar + AI humanizer + summarizer in one Premium subscription ($4.17/mo annual)

Cons

  • Free plan caps paraphrasing at 125 words per input - too short for most blog work
  • Not built for long-form generation (no article writer or blog mode like Jasper or Writesonic)
  • Output can swap synonyms too literally on Standard mode (you still need to read every line)
  • Free plan shows ads and locks 7 of the 9 paraphrase modes behind Premium

Plans & pricing

QuillBot pricing plans
PlanPriceFeatures
FreeFree Forever free, no credit card requiredParaphraser: up to 125 words per input, 2 paraphrase modes only (Standard, Fluency), Grammar Checker: basic error fixes, AI Humanizer: 125-word limit, 6 daily uses, Summarizer: up to 1,200 words, AI Detector: limited access, AI Chat: 20 conversations max, Includes ads
Premium$4.17/mo $4.17/mo billed annually ($49.95/yr), or $9.95 month-to-month, or $19.95 every 6 monthsParaphraser: unlimited word count, 9 paraphrase modes (Standard, Fluency, Formal, Simple, Creative, Expand, Shorten, Academic, Custom), Advanced grammar recommendations + tone suggestions, AI Humanizer: unlimited words and tone insights, Summarizer: up to 6,000 words per input, Plagiarism Check: 25,000 words/month, Unlimited AI Detector and AI Chat, AI Image Generation: 300/month, 100 MB document storage, no ads
TeamFree Custom pricing, contact sales (volume seats)Everything in Premium for every seat, Centralized team billing and admin dashboard, Priority support, Domain-restricted invites for teams and classrooms
Miriam Alonso

Miriam Alonso researched and verified this page. See our methodology.