Grammarly vs QuillBot
Compare Grammarly and QuillBot side by side. Features, pricing, pros & cons, and our verdict on which Writing tool is best for you.
Quick Verdict
Winner Badges
Best Overall
Grammarly
Higher rating (4.5 vs 4.2)
Best for Developers
QuillBot
Has API access
AI Recommendation
Select your use case to get a personalized recommendation:
Overview
Superhuman Platform Inc.
Grammarly is an English writing assistant that checks grammar, spelling, punctuation, and tone while offering generative AI features for content creation. Beyond basic proofreading, it provides plagiarism detection, AI-generated text identification, tone adjustments, and the ability to rewrite full sentences. Since 2025, Grammarly has expanded into generative AI with essay creation, citation insertion, and grade prediction. Available as a browser extension, desktop app, and Google Docs add-on, it works wherever you write.
QuillBot
QuillBot is a AI writing assistant developed by QuillBot, launched in 2020. It offers paraphrasing tool, grammar checker, summarizer and more as core capabilities. Designed for team collaboration and content creation. Available on web.
Feature Comparison
| Feature | Grammarly | QuillBot |
|---|---|---|
| Grammar & spelling check | ||
| Tone detection | ||
| Clarity improvements | ||
| Plagiarism detection | ||
| AI writing assistant | ||
| Browser extension | ||
| Desktop app | ||
| MS Office integration | ||
| Mobile keyboard | ||
| Paraphrasing tool | ||
| Grammar checker | ||
| Summarizer | ||
| Citation generator | ||
| Plagiarism checker | ||
| Translator | ||
| Co-writer | ||
| Chrome extension | ||
| Multiple modes |
Pricing Comparison
Pros & Cons
Pros
- Offers grammar & spelling check and tone detection
- Developer API enables custom integrations and automation
- Integrates with popular tools: Slack, Zapier, Make
- Available across platforms: web, mobile, desktop
- Free tier accessible without upfront commitment
Cons
- Free plan has usage limits; premium features require upgrading from Free
- No dedicated mobile application available
- Creative originality and factual accuracy may require evaluation for enterprise use
Pros
- Offers paraphrasing tool and grammar checker
- Developer API enables custom integrations and automation
- Integrates with popular tools: Slack, Zapier, Make
- Free tier accessible without upfront commitment
- Free tier available
Cons
- Free plan has usage limits; premium features require upgrading from Free
- Web-only access; no dedicated desktop or mobile application
- No dedicated mobile application available
- Creative originality and factual accuracy may require evaluation for enterprise use
Platform Support
| Platform | Grammarly | QuillBot |
|---|---|---|
| web | ||
| mobile | ||
| desktop |
Integrations
Use Cases
- Student writing improvement and plagiarism checking
- Business email and message clarity
- Professional document proofreading
- Content creation with generative AI assistance
- Tone adjustment for different audiences
- Non-native English speaker writing support
- Team collaboration
- Content creation
- Workflow optimization
Alternatives
Frequently Asked Questions
AI Health Score
Ease of Use & Difficulty
Grammarly vs QuillBot (0)
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