Last updated: May 2026
Quick answer: QuillBot and Grammarly are both excellent writing tools — but they do different things. Grammarly is better for real-time grammar correction. QuillBot is better for paraphrasing and rewriting. Most serious writers use both. Read on to find out which you need.
QuillBot vs Grammarly: Side-by-Side Comparison
| Feature | QuillBot | Grammarly |
|---|---|---|
| Grammar Checker | ✅ Advanced | ✅ Industry leading |
| Paraphraser | ✅ Best in class | ❌ Basic rewrite only |
| Summarizer | ✅ Yes | ❌ No |
| AI Detector | ✅ Yes | ✅ Yes (Premium) |
| Plagiarism Checker | ❌ No | ✅ Yes (Premium) |
| Tone Detection | Basic | ✅ Advanced (Premium) |
| Citation Generator | ✅ Yes | ❌ No |
| Chrome Extension | ✅ Yes | ✅ Yes |
| Free Plan | ✅ Generous | ✅ Good |
| Starting Price (Annual) | ~$8.33/mo | ~$12/mo |
What Is QuillBot?
QuillBot is an AI writing assistant used by 50 million+ people worldwide. Its primary strength is paraphrasing — rewriting content in a new way while preserving the original meaning. It also includes a grammar checker, summarizer, AI detector, and citation generator.
QuillBot is the tool you use when you want to improve and transform existing content — making it clearer, more formal, more academic, or more creative depending on your needs.
What Is Grammarly?
Grammarly is the world’s most widely used writing assistant, with over 30 million daily active users. Its primary strength is real-time grammar, spelling, and punctuation correction — catching errors as you type across virtually every platform and app you write in.
Grammarly is the tool you use to catch mistakes and polish your writing — not to fundamentally rewrite it.
QuillBot vs Grammarly: Key Differences
Grammar Checking
Winner: Grammarly (slightly)
Both tools have strong grammar checkers. Grammarly’s is more comprehensive and better at catching subtle style issues, tone inconsistencies, and complex grammatical errors. QuillBot’s grammar checker is impressive but Grammarly has a slight edge from years of refinement and its massive user dataset.
Paraphrasing
Winner: QuillBot (by a wide margin)
This isn’t close. QuillBot’s paraphraser with 8 modes is the best in the industry. Grammarly offers basic sentence rewrites but can’t match the depth, variety, or quality of QuillBot’s paraphrasing capabilities. If paraphrasing is important to you, QuillBot wins decisively.
Plagiarism Checker
Winner: Grammarly
Grammarly Premium includes a plagiarism checker that scans billions of web pages. QuillBot doesn’t have a plagiarism checker — a notable gap for students and publishers who need to verify content originality.
Summarizer
Winner: QuillBot
QuillBot includes a solid AI summarizer that condenses long documents into key points. Grammarly doesn’t offer this feature. For researchers, students, and content marketers who process large volumes of information, this is a meaningful advantage for QuillBot.
Citation Generator
Winner: QuillBot
QuillBot includes a citation generator supporting APA, MLA, and other major formats — an invaluable tool for academic writers. Grammarly doesn’t offer citation generation.
Tone Detection
Winner: Grammarly
Grammarly Premium’s tone detector is sophisticated — analyzing your writing and showing how it might be perceived by readers. This is particularly valuable for professional communications where tone matters enormously. QuillBot’s tone awareness is more basic by comparison.
Real-Time Correction
Winner: Grammarly
Grammarly’s real-time correction — highlighting errors as you type — is more seamless and comprehensive than QuillBot’s. If you want a tool that works invisibly in the background catching errors, Grammarly is superior.
Pricing
Winner: QuillBot
QuillBot’s annual Premium plan at ~$8.33/month is more affordable than Grammarly Premium at ~$12/month. Both represent good value, but QuillBot wins on price — especially considering the breadth of features included.
Who Should Choose QuillBot?
- Students who need paraphrasing, summarizing, and citation generation
- Writers who want to improve and transform existing content
- Non-native English speakers who need fluency improvement
- Content marketers who repurpose content across multiple formats
- Anyone on a budget looking for maximum features per dollar
Who Should Choose Grammarly?
- Professionals who need real-time error correction across all platforms
- Writers who need a plagiarism checker before publishing
- Business communicators where tone and professionalism are critical
- Anyone who wants the most seamless, always-on writing assistant
Can You Use Both QuillBot and Grammarly?
Absolutely — and many professional writers do. The two tools complement each other perfectly:
- Grammarly catches errors as you write in real-time
- QuillBot transforms and improves complete drafts
A common workflow: write your draft with Grammarly active for real-time correction, then run sections through QuillBot to improve flow, clarity, and tone before publishing.
QuillBot vs Grammarly: Final Verdict
Neither tool is objectively “better” — they serve different purposes and work best together.
- For grammar and real-time correction: Grammarly wins
- For paraphrasing and rewriting: QuillBot wins by a wide margin
- For students and academic writers: QuillBot wins (summarizer + citation generator)
- For professional communicators: Grammarly wins (tone detection + plagiarism checker)
- For value: QuillBot wins
- For the best results: Use both together
If you can only choose one: pick the tool that addresses your biggest writing challenge. Need to write better? Grammarly. Need to rewrite and transform content? QuillBot.
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