Grammarly excels at polishing your writing with grammar checks and style improvements, while Microsoft Copilot focuses on generating content and automating tasks across Microsoft’s ecosystem.
Choosing between AI writing assistants can feel overwhelming when both tools promise to boost your productivity.
This comparison guide will help you decide which tool aligns better with your specific writing and productivity needs.
TLDR: Grammarly vs Copilot
Grammarly is your dedicated writing coach, perfect for error-free, polished content across any platform. Copilot is your creative AI assistant, ideal for generating ideas and automating tasks within Microsoft apps, making both tools valuable for different purposes.
What is Copilot?
Microsoft Copilot is an AI-powered assistant designed to work across Microsoft’s ecosystem, offering content generation, task automation, and creative support. It provides priority access to the latest AI models and integrates seamlessly with Microsoft 365 apps.

Available in free and Pro versions, Copilot helps users draft documents, create presentations, analyze data, and generate images while maintaining deep integration with familiar Microsoft tools.
What is Grammarly?
Grammarly is an AI-powered writing assistant that focuses on improving your writing quality through grammar checking, spell correction, and style enhancement. Founded in 2009, it works across more than 500,000 apps and platforms, offering real-time suggestions to help you write clear, error-free content.

From basic grammar fixes to advanced tone adjustments, Grammarly ensures your writing makes the right impression, no matter if you’re drafting emails, reports, or social media posts. Understanding how much Grammarly Premium costs can help you determine if the investment aligns with your writing improvement goals.
Grammarly Vs Copilot: Key Differences
Let’s break down how these tools differ across essential categories to help you understand their unique strengths and applications.
Parameter | Grammarly | Copilot |
---|---|---|
Primary Purpose | Writing improvement, grammar checking, and style enhancement | Content generation, task automation, and creative assistance |
Grammar/Spelling | Advanced grammar and spell checking with contextual suggestions | Basic grammar support within generated content |
Plagiarism Detection | Yes, with premium plans | No dedicated plagiarism detection |
Tone/Style Adjustments | Comprehensive tone detection and style recommendations | Limited style guidance, focuses on content creation |
Data Analysis | No data analysis capabilities | Advanced data analysis and visualization |
Availability | Works across 500,000+ apps and platforms | Primarily, the Microsoft ecosystem |
Free Version | Available with basic features | Available with limited features |
Pricing | $12/month for premium features | Free basic, $20/month for Pro |
Who is it for | Writers, students, and professionals focused on writing quality | Microsoft users needing content generation and automation |
Refund Policy | 15-day for new users | 7-day window |
Overall Rating | 4.8/5 stars | 4.0/5 stars |
These differences highlight each tool’s specialization, with Grammarly dominating writing enhancement while Copilot leads in content generation and productivity automation.
For detailed information about Grammarly’s subscription options, check out the complete Grammarly pricing guide.
AI Overview: Grammarly vs Copilot
Here’s how both tools utilize artificial intelligence to enhance various aspects of your writing and productivity workflow.
Parameter | Grammarly | Copilot |
---|---|---|
Generative AI | Limited content generation, mainly rewrites and suggestions | Advanced content creation, document drafting, and creative writing |
Editing & Refinement | Comprehensive editing with grammar, style, and tone analysis | Basic editing within generated content |
Plagiarism Detection | AI-powered plagiarism checking against billions of web pages | No plagiarism detection capabilities |
AI Content Detection | No AI content detection features | No AI content detection features |
Both tools utilize AI differently. Grammarly uses AI to enhance existing text through sophisticated language processing, while Copilot generates new content from scratch, making them complementary rather than competing solutions.
Grammarly vs Copilot: Where Does It Work?
Understanding platform compatibility helps determine which tool fits better into your existing workflow and preferred applications.
Where Does Grammarly Work?
Grammarly integrates seamlessly across 500,000 apps, including the entire Microsoft suite. It works on web browsers, desktop applications like Word and Outlook, mobile apps, Gmail, social media platforms, and virtually anywhere you type online.

For users working extensively with Google Workspace, learning how to add Grammarly to Google Docs can significantly enhance their document editing workflow. This universal compatibility makes Grammarly your constant writing companion regardless of your preferred tools or platforms.
Where Does Copilot Work?
Copilot is limited to the Microsoft ecosystem, working primarily within Microsoft 365 applications, including Word, Excel, PowerPoint, Outlook, and Teams. Recent updates have included Copilot in Microsoft 365 Personal and Family subscriptions, expanding its availability but maintaining its focus on Microsoft’s productivity suite, where it delivers maximum value through deep integration.

The integration depth varies significantly. Grammarly works universally but with surface-level integration, while Copilot offers deeper functionality within its limited ecosystem of Microsoft applications.
Grammarly vs Copilot: Pros And Cons
Let’s examine the strengths and weaknesses of each tool to help you make an informed decision.
Grammarly Pros and Cons
Pros | Cons |
---|---|
Works across all platforms and applications | No content generation capabilities |
Advanced grammar and style checking | Limited creative writing support |
Plagiarism detection available | Higher cost for premium features |
User-friendly interface with clear suggestions | Can be overly prescriptive with suggestions |
Excellent for non-native English speakers | No data analysis or automation features |
Copilot Pros and Cons
Pros | Cons |
---|---|
Powerful content generation and automation | Limited to the Microsoft ecosystem |
Deep integration with Microsoft 365 | No plagiarism detection |
Data analysis and visualization capabilities | Basic grammar checking only |
Creative writing and brainstorming support | Requires a Microsoft subscription for full features |
Free version available | Steep learning curve for advanced features |
Grammarly vs Copilot: Privacy & Security
Understanding how each tool handles your data is crucial, especially when creating business and sensitive content.
Grammarly’s Accuracy
Grammarly processes your text on secure servers with enterprise-grade security measures, including encryption and compliance certifications. Business plans offer additional security features, such as SAML single sign-on and admin controls.

However, your text needs to be sent to Grammarly’s servers for analysis, which may be concerning for some users and organizations who handle sensitive documents.
Copilot’s Accuracy
Copilot Chat is available at no additional cost for all Entra account users with a Microsoft 365 subscription, operating within Microsoft’s security framework. Microsoft implements enterprise-grade security, offering data residency options and compliance with major industry standards.

Since Copilot integrates directly with Microsoft 365, it can access your existing documents and data, which provides better context but raises privacy concerns.
Grammarly vs Copilot: Which Is Accurate?
Accuracy varies depending on what you’re measuring, writing corrections versus content generation quality.
Grammarly Accuracy
Grammarly demonstrates high accuracy in grammar checking, spelling correction, and style suggestions, backed by years of specialized development in language processing and millions of user interactions.

The platform’s plagiarism checker has proven accurate for users across academic and professional settings, making it a reliable tool for content verification.
Copilot Accuracy
Copilot shows good accuracy in content generation and task automation, though it may require more user guidance and editing to achieve the desired output quality and accuracy.

For pure writing accuracy, Grammarly leads with its specialized focus, while Copilot excels in generating contextually relevant content within Microsoft applications.
Grammarly vs Copilot: Which Is Easy To Use?
User experience varies significantly between these tools due to their different approaches to AI assistance.
Grammarly User Experience
Grammarly is suitable for both beginners and experienced users, thanks to its user-friendly interface and advanced features. Suggestions appear as inline corrections or in a sidebar, making it intuitive to accept or reject recommendations.

The learning curve is minimal – you simply write, and Grammarly provides instant feedback with clear explanations for each suggestion.
Copilot User Experience
Copilot requires more interaction and prompting to generate desired results. Users need to learn effective prompting techniques and understand how to integrate AI-generated content into their workflow.

The interface varies across Microsoft applications, and mastering all features requires time and practice, especially for advanced automation and analysis tasks.
Refund & Cancellation: Grammarly vs Copilot
Let’s take a look at the refund and cancellation policies:
Grammarly Refund Policy
There is no refund policy for Grammarly Pro. However, Grammarly offers a 15-day money-back guarantee for new subscribers who are unsatisfied with their premium plan. If you need to discontinue your subscription, understanding how to cancel Grammarly properly ensures you avoid unwanted charges.

Cancellation is straightforward through account settings, and you retain access until your current billing period ends.
Note: The refund policy differs for those who bought Grammarly Pro from the Apple Store.
Copilot Refund Policy
Microsoft Copilot follows Microsoft’s standard refund policy with a 7-day money-back guarantee for new subscribers. You can cancel your Copilot Pro subscription anytime through your Microsoft account settings.

Refunds are available if you haven’t used the service extensively and are processed within 3-5 business days.
Grammarly vs Copilot: Which One Is Best For You?
Choosing the right tool depends on your primary needs and existing workflow preferences.
Who is Grammarly Best For?
- Students: Improving essay quality through grammar checking, style enhancement, and plagiarism detection for academic integrity.
- Freelance Writers/Bloggers: Ensuring professionalism and readability while maintaining consistent quality across different clients and platforms.
- Professionals & Teachers: Enhancing business communications, reports, and presentations with error-free, appropriately toned content.
- ESL learners: Receiving detailed explanations for grammar rules and style improvements to accelerate language learning.
It’s worth noting that students should familiarize themselves with their institution’s academic integrity policies, as questions sometimes arise about if using Grammarly constitutes cheating in academic settings.
Who is Copilot Best For?
- Microsoft 365 Users: Maximizing productivity within familiar Microsoft applications through automation and content generation.
- Content Creators: Generating ideas, outlines, and first drafts for various types of content and creative projects.
- Business Professionals: Automating routine tasks, analyzing data, and creating presentations with AI-powered assistance.
- Teams and Collaborators: Leveraging shared Microsoft environments for enhanced collaboration and productivity workflows.
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Conclusion: Grammarly For Perfecting Your Writing, While Copilot Generates And Automates Content!
Grammarly serves as your meticulous writing coach, catching errors and improving style across any platform you use. Copilot acts as your creative brainstorming partner, helping generate ideas and automate tasks within Microsoft’s ecosystem.
Consider your primary workflow. If writing quality is paramount, choose Grammarly. If content creation and Microsoft integration are the top priorities, Copilot is a better fit.
Many users find value in using both tools together, leveraging Copilot for initial content generation and Grammarly for final polishing.
Start with a free trial of either tool to experience their unique benefits firsthand.
FAQs
Both tools complement each other perfectly – use Copilot for content generation and Grammarly for editing and refinement.
Grammarly offers superior support for academic writing with plagiarism detection, citation assistance, and comprehensive grammar checking.
Basic Copilot features are free, but advanced capabilities require Microsoft 365 Personal, Family, or Business subscriptions.
While Grammarly excels at editing, it offers limited creative assistance compared to Copilot’s content generation capabilities.
Value depends on usage. Grammarly provides better writing improvement value, while Copilot offers broader productivity features within the Microsoft ecosystem.