AI writing assistants have revolutionized the way we write and edit. Tools like Grammarly and QuillBot help students, professionals, and content creators improve grammar, clarity, and tone while streamlining tasks like paraphrasing and citation. As these platforms become more advanced, choosing the right one can make a big difference in your writing quality and productivity.
Why This Comparison Matters?
This guide gives you a clear, up-to-date comparison of Grammarly and QuillBot, so you can quickly decide which tool fits your needs—whether you’re focused on academic writing, professional communication, content creation, or multilingual editing.
Who Should Read This
- Students looking for grammar checks, paraphrasing tools, and citation support
- Professionals who want clean, polished writing with advanced editing features
- Marketers & Creators needing tone control, consistent style, and plagiarism checks
- Multilingual writers who need translation and paraphrasing in multiple languages
Quick Comparison: Grammarly vs QuillBot
| Feature | Grammarly | QuillBot |
| Best For | Grammar, style, tone, team collaboration | Paraphrasing, summarizing, citation, translation |
| Grammar Checking | Highly accurate with smart suggestions | Decent, but sometimes less natural |
| Paraphrasing | Basic rephrasing | Powerful with multiple modes and freeze word options |
| Plagiarism Checker | Unlimited (premium) | Limited to 20 pages/month |
| Citation Tools | Not available | Available (AI citation generator in beta) |
| Translation | Not supported | Supports over 30 languages |
| Integrations | Extensive (500,000+ apps, Docs, Word, browser, mobile) | Chrome, Word, Docs, macOS (fewer overall) |
| Mobile App | iOS, Android | Not available |
| User Interface | Clean, intuitive, team-friendly | Simple, solo-writer focused |
| Pricing | Starts around $12/month | Starts around $4.17–$8.33/month |
| Free Version | Yes, limited features | Yes, with more features |
| Language Support | English only (US, UK, etc.) | Multiple languages |
Summary: Which One Should You Choose?
- Choose Grammarly if you need top-tier grammar checks, tone suggestions, and advanced integrations—perfect for professionals, teams, and English-focused writers.
- Choose QuillBot if you need powerful paraphrasing, translation, and citation tools—ideal for students, multilingual users, and budget-conscious writers.
Both tools are excellent. The best choice depends on your writing goals and feature preferences.
Grammarly vs QuillBot: Overview
Grammarly Overview
Company Background
Founded in 2009 by Max Lytvyn, Alex Shevchenko, and Dmytro Lider, Grammarly began as a grammar and spelling checker for students. It evolved from the team’s earlier plagiarism tool, My DropBox, and quickly grew into a widely used AI writing assistant.
Core Purpose
Grammarly’s goal is to help users communicate clearly and effectively in English. It offers real-time grammar, tone, and style suggestions across devices and platforms, positioning itself as an all-in-one writing assistant for students, professionals, and teams.
Popular Use Cases
- Academic writing
- Business emails and documents
- Blogging and creative writing
- Team collaboration
- Social media and messaging
QuillBot Overview
Company Background
QuillBot was launched in 2017 by Rohan Gupta, Anil Jason, and David Silin. It started with a focus on AI-powered paraphrasing and quickly became a favorite among students and writers for its ability to rewrite content while preserving meaning.
Core Purpose
QuillBot helps users write, rewrite, summarize, and translate content more efficiently. It’s especially popular among students, researchers, and multilingual users for its flexibility and academic focus.
Popular Use Cases
- Rewriting academic content
- Summarizing articles and papers
- Creating citations
- Translating content
- Improving originality and clarity
Key Features Comparison
Shared Features
- Grammar and spelling correction
- Suggestions for clarity and readability
- AI-powered rewriting
- Browser extensions for real-time help
Grammarly’s Unique Features
- Tone Detector: Adjusts tone based on audience
- Full-Sentence Rewriting: Enhances clarity and fluency
- Deep Integrations: Works with Google Docs, Word, Outlook, plus iOS/Android apps
- Citation Tool: Recently added, still growing in capability
QuillBot’s Unique Features
- Multiple Paraphrasing Modes: Standard, Fluency, Creative, and more
- Freeze Words: Keep specific terms unchanged during rewrites
- Summarizer: Condenses long content into key points
- Translation: Supports over 30 languages
Grammarly vs QuillBot: Accuracy and Performance
Grammar, Style, and Clarity
Grammarly is known for its precision in catching grammar, punctuation, and style issues. It offers context-aware suggestions with clear explanations, making it highly reliable for academic and professional writing.
QuillBot also checks grammar and improves readability, but its corrections can be less accurate and sometimes sound unnatural. Its strength lies in paraphrasing rather than detailed grammar analysis.
Real-World Testing
In side-by-side tests, Grammarly consistently detected more errors and provided better suggestions. For example, Grammarly flagged 30 issues in a sample document, while QuillBot found 13—some of which were less relevant or accurate.
Summary
Grammarly offers more accurate and in-depth grammar and style suggestions. It’s the better option for users who need high writing accuracy, especially in professional or academic settings.
Grammar Checker Comparison
Correction Depth and Feedback
Grammarly delivers real-time, context-aware suggestions with detailed explanations for grammar, punctuation, and style. Its AI detects a wide range of errors—over 250 types—and provides precise, actionable feedback. This makes it highly effective for academic writing, business communication, and professional documents.
QuillBot offers basic grammar checking with support for multiple languages, which is helpful for non-native speakers. However, it’s less reliable for advanced corrections and lacks the depth and clarity of Grammarly’s feedback.
Best Fit
Grammarly is ideal for users who need thorough grammar correction and in-depth style suggestions.
QuillBot works better for those focused on paraphrasing and translation, rather than heavy grammar editing.
Paraphrasing Tools
QuillBot Paraphraser
This is QuillBot’s standout feature, offering multiple paraphrasing modes tailored to different writing goals:
- Standard: Balances clarity and change
- Fluency: Ensures grammatical accuracy and natural tone
- Creative: Boldly rephrases for unique outputs
- Formal: Adapts tone for academic or professional writing
- Shorten/Expand: Adjusts content length
- Custom: Lets users freeze key words and set preferences
Use Cases
- Rewriting essays or academic content
- Avoiding plagiarism by rephrasing source material
- Generating alternative sentence structures
- Paraphrasing in multiple languages
Grammarly Paraphrasing
Grammarly offers AI-driven rewrite suggestions focused on:
- Making sentences clearer and more fluid
- Matching tone and formality to the writing context
- Fixing awkward or unclear phrasing
Best Fit
Grammarly is ideal for improving clarity and tone in professional writing.
QuillBot is the better choice for deep paraphrasing, academic rewriting, and multilingual use.
Summary
Use QuillBot for advanced paraphrasing flexibility.
Use Grammarly for refining clarity, flow, and tone in polished writing.
Plagiarism Checker
Grammarly Plagiarism Checker
Grammarly scans your text against billions of web pages and academic databases (including ProQuest), highlighting matched content and linking to original sources. It’s accurate, widely trusted, and especially useful for students, researchers, and professionals who need to ensure originality in critical work.
QuillBot Plagiarism Checker
Available with premium plans (up to 20 pages/month), QuillBot checks text against web and academic sources. It’s helpful for occasional checks on student assignments and academic work but has limitations in scope and frequency.
Summary
Grammarly offers a robust, unlimited plagiarism checker suitable for frequent and high-stakes use.
QuillBot provides a basic but useful option for students or researchers with moderate needs.
Ease of Use and Interface
Grammarly User Experience
Grammarly offers a clean, user-friendly dashboard where you can write, upload, or manage documents. It integrates smoothly with Google Docs, Microsoft Word, Outlook, and most browsers, delivering real-time suggestions for grammar, spelling, style, and tone. Corrections are easy to review and apply.
It’s available as a web app, desktop app (Windows and Mac), and mobile keyboard (iOS and Android). The experience is consistent across platforms, making it convenient for users who switch between devices.
QuillBot User Experience
QuillBot’s interface is simple and focused. Users can paste text, select a paraphrasing mode, and get instant results—all within a clean, distraction-free layout. It’s ideal for first-time users or those who want quick edits.
Tailored for academic use, it offers quick access to paraphrasing, summarizing, and citation tools. It also supports document uploads and integrates with Google Docs and Microsoft Word, making it a great fit for students and researchers.
AI Capabilities
Grammarly’s AI Tools (GrammarlyGO)
GrammarlyGO enhances writing with AI-powered suggestions that can rewrite, expand, or generate content based on your intent and tone. It helps craft emails, summarize information, and tailor messages to different audiences. Suggestions are context-aware and personalized to your writing style, making it especially useful for professionals and teams.
QuillBot’s AI Tools
QuillBot’s strength lies in its AI paraphrasing engine, offering multiple rewriting modes. It also features a summarizer and an all-in-one writing workspace called Co-Writer, which supports drafting and research. QuillBot includes an AI citation generator for quickly formatting references, making it particularly useful for academic and multilingual users.
Security and Data Privacy
Data Protection Overview
Both Grammarly and QuillBot prioritize data security and user privacy.
Grammarly uses enterprise-grade security, regular audits, and strict access controls. It does not store or misuse sensitive data like names or payment information. Its privacy policy ensures your content is not sold or used for advertising, and it’s backed by recognized security certifications, making it a trusted option for individuals and organizations.
QuillBot encrypts user data, retains it only temporarily, and ensures it is not shared with third parties. Data is deleted after processing to protect privacy. While newer to the market, QuillBot maintains strong privacy practices suitable for students, researchers, and professionals.
Summary
Grammarly has a longer track record and stronger enterprise credentials, but both tools provide secure, privacy-conscious environments for writing and editing.
Integrations and Compatibility
Grammarly
Grammarly supports a wide range of platforms through:
- Browser Extensions for Chrome, Safari, Firefox, and Edge
- Integrations with Google Docs, Microsoft Word, Outlook, Gmail, Slack, and more
- Mobile Apps for iOS and Android, allowing grammar and style checks on the go
QuillBot
QuillBot offers:
- A Chrome Extension for in-browser grammar and paraphrasing
- A Microsoft Word Add-in for academic and professional writing
- An API for developers to integrate QuillBot’s tools into custom platforms
Pricing and Plans
Grammarly
- Free Plan: Basic grammar and spelling checks, limited tone detection, and 100 AI prompts/month
- Premium Plan:
- $30/month (monthly)
- $12/month billed annually ($144/year)
- Includes advanced grammar, tone, clarity checks, plagiarism detection, and 2,000 AI prompts/month
- Occasional discounts reduce annual cost to ~$100
- $30/month (monthly)
- Business Plan:
- $25/user/month (monthly) or $15/user/month (annually)
- Adds admin tools, team collaboration features, brand style guides, analytics, and enhanced security
- $25/user/month (monthly) or $15/user/month (annually)
QuillBot
- Free Plan:
- Access to basic grammar checker
- Limited to Standard and Fluency modes
- Character caps per session
- Access to basic grammar checker
- Premium Plan:
- $9.95/month (monthly)
- $39.95 for 6 months (~$6.66/month)
- $49.95/year (~$4.17/month)
- Includes all paraphrasing modes, higher character limits, plagiarism checker (20 pages/month), summarizer, citation generator, and advanced grammar checker
- Occasional student and academic discounts available
- $9.95/month (monthly)
Pros and Cons Summary
Grammarly – Pros
- Excellent grammar, spelling, tone, and style suggestions
- Real-time feedback with high accuracy
- Deep integrations with major platforms and mobile support
- Unlimited plagiarism checker with academic database access
- Team tools for collaboration and security
Grammarly – Cons
- Limited paraphrasing compared to QuillBot
- English-only language support
- Higher pricing for individual users
QuillBot – Pros
- Powerful, multi-mode paraphrasing tool
- Affordable premium pricing, especially on annual plans
- Built-in summarizer, citation generator, and translation
- Supports multiple languages
- API available for custom use
QuillBot – Cons
- Limited integrations (no mobile app, fewer platform connections)
- Grammar and clarity suggestions are less advanced than Grammarly
- Plagiarism tool is capped at 20 pages/month
Summary
Choose Grammarly if you need precise grammar and style checking, strong integrations, and team features.
Choose QuillBot if you want affordable, flexible paraphrasing, multilingual support, and academic tools.
Your ideal tool depends on whether your priority is writing accuracy or content rephrasing and cost-effectiveness.
Who Should Use Grammarly?
Grammarly is ideal for:
- Professionals: Perfect for business, legal, marketing, and journalism professionals who need polished, error-free writing. Grammarly ensures clarity, consistency, and professionalism in emails, reports, and presentations.
- Marketers & Content Creators: Great for bloggers, copywriters, and social media managers. Grammarly helps refine tone, enhance engagement, and maintain originality with its plagiarism checker.
- Businesses & Teams: Grammarly Business supports team collaboration, central management, and style consistency across organizations. Used by 50,000+ companies to boost writing quality and reduce miscommunication.
- Content Creators: Ideal for anyone producing public-facing content who wants clear, engaging, and polished writing.
While students use Grammarly too, it’s especially powerful for professionals and organizations aiming for top-tier communication.
Who Should Use QuillBot?
QuillBot is a great fit for:
- Students: Designed for academic tasks like paraphrasing essays, generating citations, summarizing sources, and avoiding plagiarism.
- ESL Learners: Non-native speakers benefit from its paraphrasing and translation tools to improve fluency and grammar.
- Academic Writers & Researchers: Useful for rewriting source material, summarizing complex research, and formatting citations.
- Budget-Conscious Users: Offers strong features at a low cost, making it ideal for individuals needing solid paraphrasing and grammar tools without a high price tag.
QuillBot is built with education and affordability in mind, offering tools that support academic and multilingual writing.
Final Verdict: Grammarly or QuillBot?
Choose Grammarly if you:
- Need advanced grammar, style, and tone correction
- Want seamless integration with tools like Word, Google Docs, Outlook, or Slack
- Work in a professional or business setting where polished writing is essential
Choose QuillBot if you:
- Focus on paraphrasing, summarizing, and citations
- Are a student, ESL learner, or academic writer
- Want high-value tools at a lower price
Performance vs Price
- Grammarly offers best-in-class grammar and style accuracy, real-time feedback, and powerful editing—but costs more ($12–$30/month).
- QuillBot delivers strong paraphrasing and academic tools for as low as $4.17/month, making it a great value for budget users.
Conclusion & Advice
- Go with Grammarly for business and editing-heavy needs.
- Choose QuillBot for academic work, rewriting, or affordability.
- Use both if you want the best of both worlds: Grammarly for editing, QuillBot for paraphrasing.
Try their free versions to see which fits your workflow best.
Frequently Asked Questions (FAQs)
Can I use Grammarly and QuillBot together?
Yes. Many users combine Grammarly’s grammar checking with QuillBot’s paraphrasing for a complete writing solution.
Which is better for academic writing?
Grammarly excels at polishing and correcting academic writing. QuillBot is better for paraphrasing, summarizing, and citations. Together, they offer full academic support.
Which is more affordable for students?
QuillBot is more budget-friendly, with plans starting at $4.17/month. Grammarly starts at $12/month (billed annually).
Do either work offline?
No. Both require an internet connection for full functionality.
Are free versions available?
Yes. Grammarly’s free plan covers basic grammar and spelling. QuillBot’s free version includes limited paraphrasing and grammar tools. Premium plans unlock advanced features.
Belekar Sir is the founder and lead instructor at Belekar Sir’s Academy, a trusted name in English language education. With over a decade of teaching experience, he has helped thousands of students—from beginners to advanced learners—develop fluency, confidence, and real-world communication skills. Known for his practical teaching style and deep understanding of learner needs, Belekar Sir is passionate about making English accessible and empowering for everyone. When he’s not teaching, he’s creating resources and guides to support learners on their journey to mastering spoken English.
