Grammarly vs Jasper AI
By Itai Varochik | Updated 2026
Quick Verdict
Overall Winner: Grammarly (4.5/5)
We tested Grammarly and Jasper AI side-by-side. Grammarly comes out ahead overall, but Jasper AI may be better for specific use cases.
Score Breakdown
| Criteria | Grammarly | Jasper AI |
|---|---|---|
| Features | 8.5/10 | 8.5/10 |
| Ease of Use | 9.5/10 | 8.5/10 |
| Value for Money | 8/10 | 7.5/10 |
| Customer Support | 7.5/10 | 8/10 |
| Overall | 8.5/10 | 8.3/10 |
Feature Comparison
| Feature | Grammarly | Jasper AI |
|---|---|---|
| Grammar Check | Yes | No |
| Tone Detection | Yes | No |
| Plagiarism Checker | Yes | No |
| AI Writer | No | Yes |
| Brand Voice | No | Yes |
| Templates | No | Yes |
| Art Generation | No | Yes |
| Team Workspace | No | Yes |
| Knowledge Base | No | Yes |
| Browser Extension | No | Yes |
Pricing Comparison
Grammarly: Free / Premium $12/mo
Jasper AI: From $49/mo
Grammarly Pros & Cons
Pros
- Works everywhere
- Excellent grammar checking
- Tone detection
- Generous free tier
Cons
- Premium needed for advanced features
- Can be overly prescriptive
- Privacy concerns
- Not for creative writing
Jasper AI Pros & Cons
Pros
- Brand Voice ensures consistent tone
- 50+ marketing-specific templates
- Campaign workflow for multi-channel content
- Enterprise security and compliance
- Browser extension for writing anywhere
- AI image generation included
Cons
- Expensive ($49-$125+/month)
- Output quality varies by template
- Requires training Brand Voice for best results
- No free tier
- Can produce generic content without proper setup
Key Specifications
| Spec | Grammarly | Jasper AI |
|---|---|---|
| Rating | 4.5/5 | 4/5 |
| Pricing | Free / Premium $12/mo | From $49/mo |
| Year Founded | 2009 | 2021 |
| Headquarters | San Francisco, CA | Austin, TX |
| Employees | N/A | 300+ |
| Best For | N/A | Marketing teams |
| Free Plan | N/A | No (7-day trial) |
| SEO Integration | N/A | Yes |
| Brand Voice Training | N/A | Yes |
Our Verdict
Grammarly wins overall. Choose Grammarly if you value Business professionals. Choose Jasper AI if you prioritize Marketing teams needing brand-consistent content.
Frequently Asked Questions
Is Grammarly better than Jasper AI?
Based on our testing, Grammarly scores higher with a rating of 4.5/5 compared to Jasper AI's 4/5. However, the best choice depends on your specific needs.
What is the main difference between Grammarly and Jasper AI?
Grammarly is known for: AI-powered writing assistant for grammar, clarity, tone, and style improvements.. Jasper AI is known for: Enterprise AI content platform for marketing teams to create on-brand content at scale..
Which is cheaper, Grammarly or Jasper AI?
Grammarly pricing: Free / Premium $12/mo. Jasper AI pricing: From $49/mo.
Can I use Grammarly and Jasper AI together?
While both tools serve similar purposes in the AI Writing Tools category, some users do use complementary features from both platforms.
What are the pros of Grammarly?
Works everywhere. Excellent grammar checking. Tone detection
What are the pros of Jasper AI?
Brand Voice ensures consistent tone. 50+ marketing-specific templates. Campaign workflow for multi-channel content
Which ai writing tools should I choose?
Choose Grammarly if you value Business professionals. Choose Jasper AI if you prioritize Marketing teams needing brand-consistent content.