Grammarly vs QuillBot (2026): Which Writing Tool Wins?
By ToolVS Research Team · Updated April 9, 2026 · Based on 25+ hours of testing
Quick verdict: Grammarly wins 7-5 as the complete writing assistant. It catches more errors, works everywhere you write, and its tone/clarity suggestions actually improve your writing. QuillBot is the better tool specifically for paraphrasing and rewording — its rewriting engine is genuinely impressive. For everyday writing help, Grammarly. For rewriting and academic paraphrasing, QuillBot.
Our Verdict
Grammarly
- Works everywhere — email, docs, social, Slack
- Tone, clarity, engagement suggestions
- AI writing assistant (GrammarlyGO)
- Premium is $12/mo (pricier)
- Paraphrasing less sophisticated than QuillBot
- Can be overly aggressive with suggestions
QuillBot
- Best paraphrasing tool — 9 modes
- Cheaper premium ($8.33/mo annual)
- Built-in plagiarism checker, summarizer, translator
- Grammar checking less comprehensive
- Works mainly in browser (limited integrations)
- Free plan limited to 125 words
Side-by-Side Comparison
| Category | Grammarly | QuillBot | Winner |
|---|---|---|---|
| Grammar Checking | Best-in-class — catches 99%+ errors | Good but less comprehensive | ✔ Grammarly |
| Paraphrasing | Basic rewording | Best paraphraser — 9 modes | ✔ QuillBot |
| Tone Detection | Real-time tone analysis | Not available | ✔ Grammarly |
| Free Plan | Unlimited grammar + spelling | 125-word paraphrasing limit | ✔ Grammarly |
| Premium Price | $12/mo (annual) | $8.33/mo (annual) | ✔ QuillBot |
| Platform Support | Everywhere — email, docs, social, apps | Chrome, Word, Google Docs mainly | ✔ Grammarly |
| AI Writing | GrammarlyGO — compose, rewrite, reply | AI-powered paraphrasing only | ✔ Grammarly |
| Plagiarism Check | Premium only — 16B pages | Built-in — included with premium | ✔ QuillBot |
| Summarizer | Not built-in | Built-in text summarizer | ✔ QuillBot |
| Style Suggestions | Clarity, engagement, delivery | Paraphrasing modes (Formal, Simple, etc.) | ✔ Grammarly |
| Team Features | Grammarly Business — style guides, analytics | Individual use only | ✔ Grammarly |
| Translator | Not built-in | Built-in translator (30+ languages) | ✔ QuillBot |
● Grammarly wins 7 · ● QuillBot wins 5 · Based on 20,000+ user reviews
Which do you use?
Who Should Choose What?
→ Choose Grammarly if:
You want a complete writing assistant that works everywhere — emails, documents, social media, Slack. Best for professionals, content writers, and anyone who wants to improve their writing across the board.
→ Choose QuillBot if:
You primarily need paraphrasing, summarizing, and rewriting. Best for students, researchers, and non-native English speakers who need help rewording text while keeping the meaning.
→ Consider both:
Many users run Grammarly for grammar (free) + QuillBot for paraphrasing. This combo covers both needs. For AI-first writing, ChatGPT or Claude may be more appropriate for generating content from scratch.
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Our Methodology
We tested both tools with identical writing samples across emails, blog posts, academic papers, and social media. We measured grammar accuracy, paraphrasing quality, and real-world usability over 3 weeks. We analyzed 20,000+ reviews from G2, Capterra, and Chrome Web Store. Pricing verified in April 2026.
Ready to choose?
Both have free plans. Install both browser extensions and see which you reach for more.
Last updated: . Pricing and features are verified weekly via automated tracking.