Grammarly
Jasper
| Feature | Grammarly | Jasper |
|---|---|---|
| Pricing | Free / from $12/mo | From $49/mo |
| Free Plan | ✓ Yes | ✗ No |
| Rating | 4.5 / 5 | 4.3 / 5 |
| Best For | writers, students, professionals, non-native-speakers | marketing-teams, agencies, content-teams, brand-managers |
| Founded | 2009 | 2021 |
| Grammar | ✓ | ✗ |
| Spelling | ✓ | ✗ |
| Tone | ✓ | ✗ |
| Clarity | ✓ | ✗ |
| Plagiarism | ✓ | ✗ |
| Browser Extension | ✓ | ✗ |
| Brand Voice | ✗ | ✓ |
| Campaigns | ✗ | ✓ |
| Templates | ✗ | ✓ |
| Seo Mode | ✗ | ✓ |
| Art Generation | ✗ | ✓ |
| Chrome Extension | ✗ | ✓ |
| Api | ✗ | ✓ |
✓ Grammarly Pros
- Works everywhere
- Clear suggestions
- Tone detection
- Plagiarism checker
✗ Grammarly Cons
- Premium is pricey
- Can over-correct
- Privacy concerns
✓ Jasper Pros
- Brand voice consistency across all outputs
- Marketing-specific templates
- Campaign workflow management
- SEO mode with SurferSEO integration
✗ Jasper Cons
- Expensive compared to ChatGPT
- No free tier available
- Output quality varies without good prompts
The Verdict
Grammarly is built for writers and students, with a focus on grammar and spelling. Jasper targets marketing teams and agencies and leads with brand-voice and campaigns.
On pricing, Grammarly is the clear winner for budget-conscious users — starting at $12/mo compared to $49/mo for Jasper. That $37/mo difference adds up quickly for growing teams.
Grammarly has a free plan, which gives it a meaningful edge for individuals and small teams exploring their options. Jasper requires a paid subscription from day one.
Feature-wise, Jasper offers broader built-in capabilities (7 features vs 6), while Grammarly takes a more focused approach — which can mean a simpler, faster onboarding experience.
This is a genuinely close comparison. If you can, sign up for both free trials (where available) and run a one-week test with your actual team tasks before deciding.