Comparison
JaspervsGrammarly
Jasper and Grammarly are both popular ai writing tools, but they take different approaches. Jasper offers plans from $39.00/mo and positions itself as "the ai copilot for marketing teams". Grammarly offers a free plan and bills itself as "write your best with grammarly". Here's how they compare across features, pricing, and real-world strengths.
Feature Comparison
| Feature | Jasper | Grammarly |
|---|---|---|
| API access | ✓ | ✓ |
| Brand voice | ✓ | ✓ |
| Browser extension | ✓ | ✓ |
| Free plan | ✗ | ✓ |
| Long-form content | ✓ | ✗ |
| Multi-language | ✓ | ✗ |
| Plagiarism checker | ✓ | ✓ |
| SEO optimization | ✓ | ✗ |
| Short-form copy | ✓ | ✗ |
| Team collaboration | ✓ | ✓ |
| Templates | ✓ | ✗ |
| Tone adjustment | ✓ | ✓ |
Jasper Pricing
Pro
1 seat (add more via sales), 2 Brand Voices, 5 Knowledge assets, 3 Audiences, Essential Agents
$69.00/mo
Business
Custom: unlimited users, unlimited customization, Advanced Agents, No-code AI App Builder, API access, SSO, dedicated support
Custom
Grammarly Pricing
Free
100 AI prompts/month, basic grammar/spelling/punctuation checks, no plagiarism detection or advanced rewrites
Free
Pro
2,000 AI prompts/member/month, up to 149 seats, full-sentence rewrites, plagiarism detection, tone adjustment (Priority support)
$30.00/mo
Enterprise
Unlimited AI prompts, enterprise security (SSO, SCIM, DLP), team analytics, style guides, brand tones, dedicated support (custom pricing, contact sales)
Custom
Jasper
Pros
- Speeds up content creation by producing high-quality first drafts and overcoming writer's block
- Maintains brand voice consistency with Jasper IQ trained on past content
- Over 50 flexible templates and SEO integrations like SurferSEO for optimized output
- Streamlines team collaboration with multi-user workflows and real-time updates
- Saves significant time on marketing copy, emails, and social posts per user reviews
Cons
- Generates generic or repetitive content requiring heavy manual editing
- Expensive pricing compared to free alternatives like ChatGPT
- Confusing credit/usage system with rapid depletion and no rollover
- Steep learning curve for advanced features and customization
- Occasional hallucinations or inaccuracies needing fact-checking
Grammarly
Pros
- Instant grammar and spelling corrections save time on proofreading
- Improves clarity, tone, and professionalism in business communication
- Seamless integrations with Google Docs, Slack, email clients, and more
- Brand voice and style guide features ensure team consistency
- High accuracy in suggestions with explanations for learning
Cons
- Suggestions can be overly strict or change intended tone/voice
- Expensive for small teams or individuals compared to free version
- Occasional incorrect or irrelevant corrections, especially in creative/casual writing
- Performance lag with very long documents or multiple tabs
- Aggressive upgrade prompts and limited free tier features
The Verdict
Grammarly takes this one with a DuelStack Score of 6.8/10 vs 4.8/10. It particularly excels at instant grammar and spelling corrections save time on proofreading. That said, Jasper is the better pick if you need its ability to speeds up content creation by producing high-quality first.