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Documentation · head to head

Grammarly vs Notion AI

Grammarly logo

Grammarly

Documentation

Great writing, simplified

From
Free
Rated
-
Full reviewWebsite
Notion AI logo

Notion AI

Content Creation

AI-powered productivity within Notion

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; Notion AI full AI access including agents and meeting notes requires the Business plan at $20 per member per month, double the $10 Plus plan
  • They diverge on capability: Grammarly covers Grammar checking, Notion AI covers Writing assistance.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Grammarly and Notion AI actually diverge.

Attributes where Grammarly and Notion AI differ
AttributeGrammarlyNotion AI
Pricing modelUnknownfreemium
PlatformsWeb, macOS, Windows, iOS, AndroidWeb, Desktop, Mobile
CategoryDocumentationContent Creation
Founded20092016

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

  • Grammar checking
  • Spelling correction
  • Punctuation
  • Clarity suggestions
  • Engagement feedback
  • Delivery insights
  • Plagiarism checker
  • Citation generator

Only in Notion AI

  • Writing assistance
  • Summarization
  • Translation
  • Q&A
  • Native Notion
  • Google Drive
  • Web support
  • Desktop support

Both cover

  • Slack

What people use each for

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

Grammarly

  • Email writingnot Notion AI
  • Document editingnot Notion AI
  • Academic writingnot Notion AI
  • Business communicationnot Notion AI
  • Content creationnot Notion AI

Notion AI

  • AI-powered document generation and database autofillnot Grammarly
  • Autonomous task automation with Notion Agentnot Grammarly
  • Meeting notes and enterprise search integrationnot 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

Notion AI

  • Full AI access including agents and meeting notes requires the Business plan at $20 per member per month, double the $10 Plus plan
  • The Free and Plus plans offer trial AI capabilities rather than the full feature set
  • AI is not sold separately from the workspace seat, so every member must be upgraded to reach it
  • Zero data retention with LLM providers is Enterprise only, which is custom priced

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

Notion AI

Free
  • FreeFree
    • Trial AI capabilities like generating docs and autofilling databases
    • Basic forms and sites
    • Notion Calendar access
  • Business$null/month
    • Notion Agent for task automation
    • Custom Agents (free through May 3, 2026; then $10 per 1,000 credits)
    • AI Meeting Notes
  • Enterprise$null/custom
    • All Business features
    • Zero data retention with LLM providers
    • HIPAA compliance capabilities

Which should you pick?

Choose Grammarly if

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

Choose Notion AI if

  • You need writing assistance.
  • You want to start without paying.
  • You work on Web, Desktop, Mobile.
  • You also want summarization.
Notion AI review

Questions people ask

Is Grammarly or Notion AI better?
Neither clearly leads. Grammarly starts at Free and Notion AI at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Grammarly or Notion AI?
Grammarly starts at Free and Notion AI at Free.
Does Grammarly or Notion AI run on more platforms?
Grammarly runs on Web, macOS, Windows, iOS, Android. Notion AI runs on Web, Desktop, Mobile.
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 Notion AI is typically brought in for.
What can Grammarly do that Notion AI cannot?
Grammarly covers Grammar checking, Spelling correction, Punctuation, Clarity suggestions. Notion AI covers Writing assistance, Summarization, Translation, Q&A. Both handle Slack.

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
Notion AI: Is Notion AI free?

Notion offers a free plan with trial AI capabilities for generating docs and autofilling databases. Full AI features like Notion Agent and Custom Agents require a Business plan.

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
Notion AI: What does Notion's Custom Agents cost?

Custom Agents are free to use through May 3, 2026. Starting May 4, 2026, Custom Agents will cost $10 per 1,000 monthly Notion credits. Admins can purchase Notion credits as add-ons.

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
Notion AI: What features does Notion's Business plan include?

Business plan includes Notion Agent for autonomous task automation, AI Meeting Notes, Enterprise Search across connected apps, SAML SSO, granular database permissions, private teamspaces, and premium app connections.

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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