Grammarly
Grammar, tone and generative rewriting across browser, desktop and mobile.
Full Grammarly record →Head to head
Grammarly vs Notion AI
Grammarly (Grammarly) and Notion AI (Notion) both sit in Writing. Notion AI is the cheaper entry point at Free tier · from $10/mo. Notion AI shipped more tracked changes in the last 30 days (10 vs 2). Every value below comes from the latest crawl of the vendors' own pages.
| Attribute | Grammarly Grammarly | Notion AI Notion |
|---|---|---|
| Segment | Writing | Writing |
| Version | Pro | 3.7 |
| Entry cost | Free tier · from $12/mo | Free tier · from $10/mo |
| Pricing tiers | Free free · Pro $12 · Enterprise free | Notion AI Add-on / Plus Plan member price $10 · Business Plan member price $20 · Custom Agents Add-on $10 |
| Model stack | Grammarly AI · Grammarly AI Assistant · Grammarly ML · Grammarly Proprietary AI · In-house NLP models · Undisclosed frontier LLM | Claude · Claude Sonnet 4.5 · Codex · Cursor · disclosed · GLM 5.2 · GPT-5.2 · GPT-5.6 Sol · Grok 4.3 · Kimi K3 · LLM providers · Notion AI LLMs · Opus 4.8 · Opus 5 |
| Context window | Not published | Not published |
| Public API | ||
| Routes models | ||
| Changes / 30d | 2 | 10 |
| Origin | Global | Global |
| Capabilities | Grammar and tone, Generative rewriting, Plagiarism detection, AI detection, Docs editor, Grammar Checker, Plagiarism Checker, AI Detector | Workspace Q&A, AI meeting notes, Enterprise search, Research mode, Autofill databases, AI Meeting Notes, Enterprise Search, Custom Agents |
Notion AI
Writing, summarising and Q&A grounded in your Notion pages and connected apps.
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