Our Verdict
Based on ratings, features, pricing, and capabilities, Claude edges ahead in this comparison. Claude scores higher on user ratings and overall feature set.
Feature
Claude
Grammarly
Rating
No ratings
No ratings
Free Plan
Starting Price
$20/mo
$15/mo
Monthly Visits
450.0M
200.0M
API Support
Open Source
AI Capabilities
Mobile App
Desktop App
Browser Extension
Integrations
4 apps
5 apps
Team Size
ENTERPRISE
SMB
Claude Pros & Cons
Pros
- Superb, highly human-like writing tone
- Exceptional coding and database query synthesis
- Claude Artifacts allow interactive React previews
Cons
- Relatively low daily message quotas compared to competitors
- Image generation is not natively built-in
- No real-time voice mode yet
Grammarly Pros & Cons
Pros
- Works everywhere via browser extension
- Catches subtle contextual errors other tools miss
- Excellent for non-native English writers
Cons
- Premium is required for most useful features
- Privacy concerns with document processing
- Suggestions can be overly prescriptive
Claude Key Features
- Artifacts UI
- 200k Context Token Window
- PDF & Doc Uploads
- Project Workspace Builder
- JSON Mode output
Grammarly Key Features
- Real-time Grammar Checking
- Tone Detection & Suggestions
- Plagiarism Detection
- Grammarly GO AI Writer
- Style Guide (Business)