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Documentation · head to head

Grammarly vs QuillBot

Grammarly logo

Grammarly

Documentation

Great writing, simplified

From
Free
Rated
-
Full reviewWebsite
QuillBot logo

QuillBot

AI

AI paraphrasing and writing tool

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Grammarly occasional false positives and grammatically incorrect suggestions that can introduce errors; QuillBot free tier limited to 125-word paraphrases with only 2 modes
  • They diverge on capability: Grammarly covers Spelling correction, QuillBot covers Paraphrasing.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Grammarly and QuillBot actually diverge.

Attributes where Grammarly and QuillBot differ
AttributeGrammarlyQuillBot
Pricing modelUnknownfreemium
PlatformsWeb, macOS, Windows, iOS, AndroidWeb
CategoryDocumentationAI
Founded20092017

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Grammarly

  • Spelling correction
  • Punctuation
  • Clarity suggestions
  • Engagement feedback
  • Delivery insights
  • Plagiarism checker
  • Chrome
  • Safari

Only in QuillBot

  • Paraphrasing
  • Summarization
  • Browser extension
  • Microsoft Word
  • Web support
  • Browser-extension support

Both cover

  • Grammar checking
  • Citation generator
  • Google Docs

What people use each for

The jobs each tool is most often brought in to do.

Grammarly

  • Email writingnot QuillBot
  • Document editingnot QuillBot
  • Academic writingnot QuillBot
  • Business communicationnot QuillBot
  • Content creationnot QuillBot

QuillBot

  • ai tools managementnot Grammarly
  • Workflow automationnot Grammarly
  • Reportingnot Grammarly

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Grammarly

  • Occasional false positives and grammatically incorrect suggestions that can introduce errors
  • Privacy concerns about sending text to Grammarly's servers for analysis
  • AI capabilities sometimes produce hallucinations and fabricated citations that appear grammatically correct

QuillBot

  • Free tier limited to 125-word paraphrases with only 2 modes
  • Grammar checking is less robust than Grammaly
  • Writing analytics less advanced than top-tier competitors

Pricing, plan by plan

Grammarly

Free
  • FreeFree
    • Basic grammar and spelling checks
    • Tone visibility
    • 100 AI prompts per month
  • Pro$12/month
    • Sentence rewrites
    • Tone adjustment
    • Plagiarism and AI detection

QuillBot

Free
  • FreeFree
    • 125 words paraphrase
    • 3 modes
  • Premium$9.95/month
    • Unlimited words
    • All modes
    • Plagiarism checker

Which should you pick?

Choose Grammarly if

  • You need spelling correction.
  • You want to start without paying.
  • You work on Web, macOS, Windows, iOS, Android.
  • You also want punctuation.
Grammarly review

Choose QuillBot if

  • You need paraphrasing.
  • You want to start without paying.
  • You also want summarization.
QuillBot review

Questions people ask

Is Grammarly or QuillBot better?
Neither clearly leads. Grammarly starts at Free and QuillBot at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Grammarly or QuillBot?
Grammarly starts at Free and QuillBot at Free.
Does Grammarly or QuillBot run on more platforms?
Grammarly runs on Web, macOS, Windows, iOS, Android. QuillBot runs on Web.
Can I use Grammarly for free?
Both have a free tier, so you can try either at no cost before committing.
What is Grammarly best used for?
Grammarly is most often used for email writing, document editing, academic writing, business communication. Of those, email writing and document editing are not what QuillBot is typically brought in for.
What can Grammarly do that QuillBot cannot?
Grammarly covers Spelling correction, Punctuation, Clarity suggestions, Engagement feedback. QuillBot covers Paraphrasing, Summarization, Browser extension, Microsoft Word. Both handle Grammar checking, Citation generator, Google Docs.

Answered from the vendors’ own pages

Grammarly: Does Grammarly have a free version?

Yes, Grammarly offers a free tier with basic spelling, grammar, and punctuation checks, tone visibility, and 100 AI prompts per month. The Pro plan ($12/month annual) adds sentence rewriting, plagiarism detection, and 2,000 AI prompts.

Source
QuillBot: What is QuillBot pricing?

QuillBot uses a freemium model. Premium costs $19.95/month or $8.33/month ($100/year) when billed annually. The free tier provides basic paraphrasing with 125-word limit and 2 modes.

Source
Grammarly: What platforms does Grammarly work with?

Grammarly works across 1 million+ apps including Google Docs, Microsoft Word, Outlook, Slack, Gmail, and web browsers. It also integrates with productivity tools like Asana, Jira, Monday.com, Confluence, and HubSpot.

Source
QuillBot: What are QuillBot's paraphrasing modes?

QuillBot offers 10 specialized paraphrasing modes including Standard, Fluency, Creative, and the newly added Boomer Mode, providing unmatched flexibility at this price point.

Source
Grammarly: Can I use Grammarly offline?

Grammarly requires an internet connection to function, though the browser extension works with some offline text areas. For offline use, the desktop app and browser extensions sync when reconnected.

Source
QuillBot: What features does the free plan include?

QuillBot's free plan includes paraphrasing (125-word limit, 2 modes), grammar checking with limited daily checks, summarizing (1,200-word limit), and basic translation.

Source
Grammarly: What is included in the Enterprise plan?

The Enterprise plan includes unlimited team members, dedicated support, custom roles and permissions, data loss prevention, bring-your-own-key encryption, and unlimited AI prompts. Pricing is custom and available by contacting sales.

Source
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