Grammarly vs Notion AI: Honest Comparison (2026)
Last updated: May 1, 2026 · Based on real pricing + 14,500 G2 reviews
Grammarly
Grammarly Inc.
$30/mo
Free tierAI writing assistant for grammar, clarity & tone
★★★★☆ 4.7 (9,000 reviews)
Plagiarism check Grammar check Browser ext.
Side-by-side feature comparison
| Feature | Grammarly | Notion AI |
|---|---|---|
| Starting price | Free / $30/mo | Free / $10/mo |
| G2 rating | 4.7 ★ (9,000) | 4.7 ★ (5,500) |
| Free tier | ✓ | ✓ |
| Long-form writing | ✗ | ✓ |
| SEO mode | ✗ | ✗ |
| Plagiarism check | ✓ | ✗ |
| Grammar check | ✓ | ✗ |
| API access | ✗ | ✓ |
| Browser extension | ✓ | ✗ |
| Templates | ✗ | ✓ |
| Affiliate program | ✓ | ✓ |
Pricing comparison
Grammarly
Monthly: $30/mo
Yearly equivalent: $12/mo
Free tier: Basic grammar checks, limited AI
Notion AI
Monthly: $10/mo
Yearly equivalent: $8/mo
Free tier: 20 AI responses free, then add-on $10/mo