Grammarly vs Notion AI
Cheapest paid tier each vendor publishes. Free plans are listed above; tiers priced on request are not plotted because there is no figure to plot.
Where they differ
Only on Grammarly
- Grammar checker
- Spell checker
- Tone detection
- Also on API and Chrome extension
Only on Notion AI
- Lower entry price: $10/mo against $30/mo
- Summarization
- Knowledge base
- AI chat
From the pricing tiers and capability tags we track. A capability missing on one side means we have not recorded it there, not that the tool cannot do it.
At a glance
Grammarly and Notion AI both appear in this directory's writing listings. Prices below were read from the vendors' own pages, most recently on October 12, 2026. Paid plans start at $30/mo on Grammarly and $10/mo on Notion AI. We track grammar checker on Grammarly and summarization on Notion AI; both cover writing assistant. No score and no winner: the facts do the picking.
Capability tags are factual labels we assign when a tool is added; they describe what a tool does, not how well it does it.
Checked against the vendors. Written from each vendor's own site and last re-checked there: Grammarly on October 12, 2026 · Notion AI on October 12, 2026. Vendors change pricing and features without notice, so confirm anything that decides your purchase on the vendor's page.
Grammarly
Grammar, style, and generative writing help across your apps
Grammarly checks grammar, spelling, punctuation, and tone, and can rewrite or generate text on demand. It works as a browser extension, desktop app, keyboard, and inside Microsoft Word and Google Docs.
Notion AI
AI assistant built into the Notion workspace
Notion AI is the AI assistant built into Notion. It drafts and edits text, summarizes pages and meetings, and answers questions using the contents of your workspace. Full access is included in Notion's Business and Enterprise plans.
Also in writing
A tool we have an affiliate relationship with. It is not part of the comparison above and we are not calling it the better pick.
- Paraphrasing and rewriting text
- Checking essays and articles for plagiarism
- Generating academic citations
Grammarly and Notion AI in action
Each vendor's own walkthrough, from its homepage or official YouTube channel. We don't make these videos and we don't rate them.
Grammarly
Notion AI
Key features
Grammarly
- Grammar, spelling, and punctuation checks
- Tone and clarity suggestions
- Generative rewriting and drafting prompts
- Works in the browser, desktop, Word, Google Docs, and mobile
- Team style guides on Business plans
Notion AI
- Generate and rewrite text inside any page
- Summarize documents and meeting notes
- Q&A across your workspace and connected apps
- Translation and tone adjustments
- AI agents for multi-step tasks
What each one does well
Grammarly
- ✓ Catching typos and awkward phrasing across every app you write in
- ✓ Adjusting the tone of an email or message before you send it
- ✓ Team style consistency across many writers
Notion AI
- ✓ Drafting and editing documents where your notes already live
- ✓ Summarizing long pages and meeting transcripts
- ✓ Asking questions across a team wiki or knowledge base
People also ask
Which is cheaper, Grammarly or Notion AI?
Notion AI is cheaper: paid plans start at $30/mo for Grammarly and $10/mo for Notion AI.
Does Grammarly or Notion AI have a free plan?
Both Grammarly and Notion AI publish a free plan.
What is the difference between Grammarly and Notion AI?
Grammarly and Notion AI are both tracked for writing-assistant. Of the capabilities they do not share, only Grammarly is tracked for grammar-checker, spell-checker, tone-detection, generative-writing, and only Notion AI is tracked for summarization, knowledge-base, ai-chat, notes.
How much do Grammarly and Notion AI cost?
Grammarly: free plan, then $30/mo. Notion AI: free plan, then $10/mo.
Answers are generated from the tracked plans and capability tags shown above, so they move when the vendors' pages do.
Full fact sheets, FAQs, and discussion links: Grammarly · Notion AI · all writing tools