Grammarly AI vs Notion AI
Text Generation
| G Grammarly AI | N Notion AI | |
|---|---|---|
| Free tier | ✓ Free tier | Paid only |
| Pricing model | subscription | subscription |
| Price | $30 (Pro) | $10 (AI add-on) |
| Features | ||
| Languages | en | en, ja, fr, de, es |
| API | ✓ Available Docs ↗ | ✗ Not available |
| Homepage | Grammarly AI ↗ | Notion AI ↗ |
| Pricing Plans | 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 | 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 |
| Platforms | ||
| Integrations | Chrome extension, Microsoft Word, Google Docs, Outlook, Slack, VS Code, Grammarly API, Figma | Notion (native), Slack (via Notion bots), Google Drive (via import), Zapier |
- 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
- 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
AI Commentary
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.
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.