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Grammarly vs Notion AI

Features, pricing, ratings, and pros and cons, side by side.

Grammarly logo

Grammarly

AI writing assistant that corrects, rewrites and tone-checks your text across every app

Freemium
Visit websiteView details
Notion AI logo

Notion AI

AI agent and writing assistant built into the Notion workspace for docs and databases

Freemium
Visit websiteView details

Verdict

Grammarly and Notion AI are both AI Assistants tools. Notion AI scores higher in FinderAtlas's editorial review (8.5 vs 8.2 out of 10). Both have a free plan or trial. Only Grammarly is available on Chrome Extension and Firefox Extension and offers an API.

Best overall

Notion AI

  • Teams already using Notion
  • Project managers
  • Product and engineering teams
  • Knowledge workers

Choose Grammarly if

  • You want a tool built for polishing emails and documents in real time across many apps, keeping tone and style consistent across a team.
  • Works across desktop, browser, Office, Google Docs and mobile keyboards, so suggestions follow you between apps.
  • Free plan covers core grammar, spelling and tone visibility with 100 AI prompts per month.

Choose Notion AI if

  • You want a tool built for searching and answering questions across a Notion workspace.
  • Works directly on the pages and databases where teams already keep their content.
  • Q&A answers include citations to workspace sources.
Best for beginners
Grammarly
Best for business
Grammarly

Features

18 features compared.

  • Citation Tools
    Grammarly
    Available
    Notion AI
    Not available
  • Style Guides and Brand Tones
    Grammarly
    Available
    Notion AI
    Not available
  • Cross-App Availability
    Grammarly
    Available
    Notion AI
    Not available
  • Enterprise Security Controls
    Grammarly
    Available
    Notion AI
    Not available
  • Grammar and Mistake Correction
    Grammarly
    Available
    Notion AI
    Not available
  • Tone Detection and Adjustment
    Grammarly
    Available
    Notion AI
    Not available
  • Full-Sentence and Paragraph Rewrites
    Grammarly
    Available
    Notion AI
    Not available
  • AI Detector and Humanizer
    Grammarly
    Available
    Notion AI
    Not available
  • Plagiarism Checker
    Grammarly
    Available
    Notion AI
    Not available
  • Notion Agent
    Grammarly
    Not available
    Notion AI
    Available
  • Custom Agents
    Grammarly
    Not available
    Notion AI
    Available
  • Q&A with citations
    Grammarly
    Not available
    Notion AI
    Available
  • Inline writing help
    Grammarly
    Not available
    Notion AI
    Available
  • AI Meeting Notes (beta)
    Grammarly
    Not available
    Notion AI
    Available
  • Enterprise Search (beta)
    Grammarly
    Not available
    Notion AI
    Available
  • Research mode
    Grammarly
    Not available
    Notion AI
    Available
  • Database autofill and formulas
    Grammarly
    Not available
    Notion AI
    Available
  • Admin controls
    Grammarly
    Not available
    Notion AI
    Available

Pricing

Plans as listed by each vendor. Check their sites for current prices.

  • Pricing model
    Grammarly
    Freemium
    Notion AI
    Freemium
  • Free plan
    Grammarly
    Yes
    Notion AI
    Yes
  • Starting price
    Grammarly
    $0
    Notion AI
    $0
  • Plans
    Grammarly
    3 plans
    Notion AI
    4 plans

Grammarly plans

  • Free

    $0

    Basic writing help for individuals

    • Mistake correction
    • tone visibility
    • 100 AI prompts/month

  • Pro

    Most popular

    $30/month

    Individuals and eligible teams wanting advanced rewrites and detection

    • 2,000 AI prompts/member/month
    • tone adjustment
    • full-sentence rewrites
    • plagiarism detection
    • AI-generated text detection
    • style guide
    • brand tone
    • priority support

  • Enterprise

    Custom/custom

    Larger organizations with security and governance needs

    • Unlimited AI prompts
    • unlimited style guides and brand tones
    • SAML SSO
    • SCIM
    • audit logs API
    • data loss prevention
    • dedicated support

Notion AI plans

  • Free

    $0

    For individuals organizing personal projects

    • Trial of Notion AI
    • Limited trials of Notion Agent and AI Meeting Notes
    • Databases
    • Notion Calendar

  • Plus

    $10/user/mo

    For small teams and professionals

    • Everything in Free
    • Trial of Notion AI
    • Unlimited file uploads
    • Unlimited guests
    • Basic connections

  • Business

    Most popular

    $20/user/mo

    Marked as recommended; for growing businesses

    • Everything in Plus
    • Notion Agent
    • AI Meeting Notes
    • Enterprise Search (beta)
    • SAML SSO
    • 90-day page history

  • Enterprise

    Custom/custom

    Contact sales

    • Everything in Business
    • Zero data retention at LLM providers
    • SCIM provisioning
    • Audit log
    • Custom data retention

Our ratings

Scored out of 10 by the Finder Atlas editorial team. Last reviewed October 2026.

Grammarly
8.2overall
Notion AI
8.5overall

  • Ease of Use

    Grammarly
    9.1
    Notion AI
    Not rated

  • Feature Depth

    Grammarly
    8.3
    Notion AI
    Not rated

  • Value for Money

    Grammarly
    7.3
    Notion AI
    Not rated

  • Performance & Speed

    Grammarly
    8.4
    Notion AI
    Not rated

  • Documentation & Support

    Grammarly
    8.0
    Notion AI
    Not rated

  • Workspace Q&A & Search

    Grammarly
    Not rated
    Notion AI
    8.6

  • Document Summarization

    Grammarly
    Not rated
    Notion AI
    8.4

  • Database Automation

    Grammarly
    Not rated
    Notion AI
    8.5

  • Inline Writing Assistance

    Grammarly
    Not rated
    Notion AI
    8.3

  • Data Privacy & Security

    Grammarly
    Not rated
    Notion AI
    8.5

Scores weigh documented features, plan value, platform coverage, integrations and user feedback. A missing score means we have not rated that area yet.

Pros and cons

Grammarly

Pros

  • Works across desktop, browser, Office, Google Docs and mobile keyboards, so suggestions follow you between apps.
  • Free plan covers core grammar, spelling and tone visibility with 100 AI prompts per month.
  • Pro adds tone adjustment, full-sentence rewrites, plagiarism and AI-text detection in a single subscription.
  • Team features include style guides, brand tones, analytics and user groups; Enterprise adds SSO, SCIM and audit logs.
  • Public REST APIs exist for analytics, licence management, writing score and detection.

Cons

  • Monthly billing for Pro is $30, versus $12 per month on annual billing, so month-to-month use costs 2.5 times as much.
  • Third-party tests of the AI Detector report notable false-positive rates (figures range from 14.2% to 34% across sources), so it is unreliable as proof.
  • An App Store reviewer criticizes the iOS keyboard setup for pushing users to grant broad access.
  • Experienced writers on forums report turning off many suggestions; advanced features are gated behind Pro.

Notion AI

Pros

  • Works directly on the pages and databases where teams already keep their content
  • Q&A answers include citations to workspace sources
  • Enterprise Search reaches connected apps such as Slack, Google Drive and GitHub
  • Meeting transcription works without a meeting bot
  • Notion states customer data is not used for model training unless the customer opts in

Cons

  • Full AI features (Agent, Meeting Notes, Enterprise Search) require the $20 per member Business plan
  • Custom Agents and Workers use credits billed at $10 per 1,000 monthly credits
  • Meeting Notes and Enterprise Search are labelled beta
  • Only useful if content lives in Notion; it does not generate images

Platforms

  • Web
    Grammarly
    Supported
    Notion AI
    Supported
  • Windows
    Grammarly
    Supported
    Notion AI
    Supported
  • macOS
    Grammarly
    Supported
    Notion AI
    Supported
  • iOS
    Grammarly
    Supported
    Notion AI
    Supported
  • Android
    Grammarly
    Supported
    Notion AI
    Supported
  • API
    Grammarly
    Supported
    Notion AI
    Not supported
  • Browser Extension
    Grammarly
    Not supported
    Notion AI
    Not supported
  • Chrome Extension
    Grammarly
    Supported
    Notion AI
    Not supported
  • Firefox Extension
    Grammarly
    Supported
    Notion AI
    Not supported

Integrations

Grammarly

7 integrations
  • Microsoft Office
  • Google Docs
  • Chrome
  • Safari
  • Firefox
  • Edge
  • Zendesk

Notion AI

3 integrations
  • Slack
  • Google Drive
  • GitHub

Company

  • Company
    Grammarly
    Superhuman
    Notion AI
    Notion Labs, Inc.
  • Founded
    Grammarly
    2009
    Notion AI
    Not listed
  • Headquarters
    Grammarly
    San Francisco, CA
    Notion AI
    San Francisco, CA
  • Monthly users
    Grammarly
    40 million people
    Notion AI
    Not listed
  • Listing
    Grammarly
    Claimed
    Notion AI
    Claimed

Frequently asked questions

Is Grammarly better than Notion AI?

It depends on your workflow. Grammarly is built for polishing emails and documents in real time across many apps, keeping tone and style consistent across a team. Notion AI is built for searching and answering questions across a Notion workspace.

What are the key feature differences between Grammarly and Notion AI?

Grammarly: AI writing assistant that corrects, rewrites and tone-checks your text across every app. Notion AI: AI agent and writing assistant built into the Notion workspace for docs and databases.

Does Grammarly or Notion AI have a free plan?

Yes, both do. Grammarly is freemium and Notion AI is freemium, and each has a free plan or trial.

Which is cheaper, Grammarly or Notion AI?

Both can be used for free. Paid plans differ in limits and features, so compare the tiers in the pricing table above.