Notion AI vs Grammarly AI
Text Generation
| N Notion AI | G Grammarly AI | |
|---|---|---|
| Free tier | Paid only | ✓ Free tier |
| Pricing model | subscription | subscription |
| Price | $10 (AI add-on) | $30 (Pro) |
| Features | ||
| Languages | en, ja, fr, de, es | en |
| API | ✗ Not available | ✓ Available Docs ↗ |
| Homepage | Notion AI ↗ | Grammarly AI ↗ |
| Pricing Plans | AI Add-on (Plus)$10/moRequires Notion Plus ($10/mo); unlimited AI writes AI Add-on (Business)$10/moRequires Notion Business ($18/mo); team AI features EnterpriseCustomIncludes AI, SSO, advanced permissions | Free$0/moBasic grammar and spelling checks, tone detection Pro$30/moFull rewrites, clarity suggestions, plagiarism checker, generative AI Business$15/mo per userMin 3 users, style guides, brand tones, admin dashboard EnterpriseCustomSSO, compliance features, dedicated support |
| Platforms | ||
| Integrations | Notion (native), Slack (via Notion bots), Google Drive (via import), Zapier | Chrome extension, Microsoft Word, Google Docs, Outlook, Slack, VS Code, Grammarly API, Figma |
- Seamlessly embedded in Notion — no context switching required
- Q&A feature can query across your entire Notion workspace
- Summarization and translation work well for knowledge management
- Supports 10+ output languages for multilingual teams
- Requires an existing Notion subscription — cannot be used standalone
- AI capabilities lag behind dedicated tools like Jasper or ChatGPT
- No API for AI features limits automation potential
- Best-in-class grammar, spelling, and style correction
- Browser extension works across virtually every web-based writing surface
- Tone adjustment and clarity rewrites improve communication quality
- Business plan includes style guides for brand consistency
- Generative AI features are weaker than dedicated tools like ChatGPT
- Only supports English — not suitable for non-English writing workflows
- Privacy concerns as all text passes through Grammarly servers
AI Commentary
Notion AI is not a standalone writing tool but rather an embedded AI layer that makes the Notion workspace significantly smarter. Its most powerful capability is the Q&A feature, which allows users to ask natural language questions and receive answers synthesized from content across their entire Notion workspace — essentially turning your notes and docs into a queryable knowledge base. The writing assistance, summarization, and translation features are solid but not best-in-class compared to dedicated tools. The value proposition is strongest for existing Notion power users who want AI without switching platforms.
Grammarly has evolved from a grammar checker into a full AI writing assistant, but its core strength remains its deeply trained understanding of English grammar, style, and clarity. The browser extension's ubiquity — working in Gmail, Slack, Google Docs, and virtually any text field in Chrome — makes it uniquely integrated into daily writing workflows without requiring any context switching. The Business tier's style guide feature allows organizations to enforce specific terminology and writing conventions automatically. However, its generative AI capabilities are relatively basic, and its English-only scope limits international adoption.