Grammarly vs QuillBot: Which Writing Tool Is Better in 2026?
Updated March 2026 · 8 min read
Grammarly and QuillBot are two of the most popular AI writing assistants, but they serve fundamentally different purposes. Grammarly excels at grammar checking and style improvement, while QuillBot specializes in paraphrasing and content rewriting. This comparison helps you choose the right tool based on your specific needs.
| Feature | Grammarly | QuillBot |
|---|---|---|
| Primary Function | Grammar & style checking | Paraphrasing & rewriting |
| Free Plan | ✓ Basic grammar | ✓ 125 words |
| Premium Price | $12/month (annual) | $9.95/month (annual) |
| Browser Extension | ✓ Chrome, Firefox, Edge, Safari | ✓ Chrome, Firefox, Edge |
| Tone Detection | ✓ Advanced | ✗ |
| Paraphrasing Modes | ✗ | ✓ 8 modes |
| Plagiarism Checker | ✓ (Premium) | ✓ (Premium) |
| AI Writing | ✓ GrammarlyGO | ✓ Co-Writer |
| Language Support | English only | 23 languages |
| Summarizer | ✗ | ✓ Included |
| Mobile App | ✓ iOS & Android | ✗ |
| MS Office Integration | ✓ Word & Outlook | ✓ Word |
| Best For | Professional writing | Academic rewriting |
Detailed Breakdown
Grammar & Writing Quality
Grammarly is the clear winner for grammar checking. It catches more errors, offers contextual suggestions, and provides detailed explanations. Its tone detection feature helps you adjust writing for different audiences. QuillBot's grammar checker is functional but less comprehensive.
Paraphrasing & Rewriting
QuillBot dominates the paraphrasing space with 8 different modes: Standard, Fluency, Formal, Simple, Creative, Expand, Shorten, and Custom. Grammarly doesn't offer dedicated paraphrasing, though GrammarlyGO can suggest rewrites. For academic paraphrasing or content rewriting, QuillBot is the better choice.
Pricing & Value
QuillBot is more affordable at $9.95/month (annual) vs Grammarly's $12/month (annual). However, Grammarly's free tier is more generous. QuillBot limits free users to 125 words per paraphrase, while Grammarly's free plan includes basic grammar checking across all platforms.
Our Verdict
Choose Grammarly if: You need comprehensive grammar checking, tone detection, and professional writing assistance. Best for business professionals, content creators, and anyone who writes daily.
Choose QuillBot if: You need paraphrasing, summarizing, or content rewriting capabilities. Best for students, researchers, and anyone who needs to rephrase content while maintaining meaning.
Consider TextShift if: You need AI detection + humanization + plagiarism checking in one tool. Try TextShift free for an all-in-one solution.