Microsoft Copilot 365
Microsoft
EnterpriseGrammarly
Grammarly
FreemiumMicrosoft Copilot 365 vs Grammarly: Full Comparison (2026)
Microsoft Copilot 365 is ai assistant embedded across the microsoft 365 suite. Grammarly is ai writing assistance for clarity, tone, and correctness. Use the breakdown below to find the right fit for your needs.
This page presents factual information sourced from publicly available vendor documentation and product pages. AIHub does not endorse either product. The right tool depends on your specific use case, team, and requirements — we recommend evaluating both tools directly before making a decision.
Side-by-Side Overview
Pricing Model
Microsoft Copilot 365
EnterpriseGrammarly
FreemiumAPI Access
Microsoft Copilot 365
AvailableGrammarly
Not availablePlatforms
Microsoft Copilot 365
Word, Excel, PowerPoint, Outlook, Teams, SharePoint, Loop, OneNote, Planner, Windows 11 (Copilot+)Grammarly
Chrome Extension, Firefox Extension, macOS App, Windows App, iOS, Android, MS Word Plugin, Google DocsIntegrations
Microsoft Copilot 365
6 integrationsGrammarly
7 integrationsVendor
Microsoft Copilot 365
MicrosoftGrammarly
GrammarlyCategory
Microsoft Copilot 365
ProductivityGrammarly
ProductivityLaunch
Microsoft Copilot 365
Nov 1, 2023Grammarly
2009 (full AI features 2022–2023)Models
Microsoft Copilot 365
GPT-4.1, o3Grammarly
Proprietary BERT-based grammar models, GPT-4.1 (GrammarlyGO generative features)| Feature | Microsoft Copilot 365 | Grammarly |
|---|---|---|
| Pricing Model | Enterprise | Freemium |
| API Access | Available | Not available |
| Platforms | Word, Excel, PowerPoint, Outlook, Teams, SharePoint, Loop, OneNote, Planner, Windows 11 (Copilot+) | Chrome Extension, Firefox Extension, macOS App, Windows App, iOS, Android, MS Word Plugin, Google Docs |
| Integrations | 6 integrations | 7 integrations |
| Vendor | Microsoft | Grammarly |
| Category | Productivity | Productivity |
| Launch | Nov 1, 2023 | 2009 (full AI features 2022–2023) |
| Models | GPT-4.1, o3 | Proprietary BERT-based grammar models, GPT-4.1 (GrammarlyGO generative features) |
About Microsoft Copilot 365
Microsoft 365 Copilot integrates GPT-4 into Word, Excel, PowerPoint, Outlook, and Teams. Automates document creation, data analysis, email drafting, and meeting summaries.
Designed For
- Document creation
- Data analysis in Excel
- Email drafting
- Meeting summarization
About Grammarly
Grammarly uses AI to check grammar, spelling, punctuation, clarity, engagement, and delivery in real-time across browsers, apps, and documents.
Designed For
- Professional emails
- Academic writing
- Blog posts
- Business documents
Strengths & Limitations
Microsoft Copilot 365
Strengths
- Deep M365 integration
- Enterprise security
- Works in existing tools
Limitations
- $30/user/month
- Requires M365 subscription
- Enterprise only
Grammarly
Strengths
- Works everywhere
- Tone detection
- Free tier useful
Limitations
- Premium required for best features
- Can over-suggest
Frequently Asked Questions
What is the difference between Microsoft Copilot 365 and Grammarly?
Microsoft Copilot 365 is ai assistant embedded across the microsoft 365 suite, while Grammarly is ai writing assistance for clarity, tone, and correctness. Microsoft Copilot 365 is designed for Enterprise Microsoft 365 users, Finance teams; Grammarly is designed for Professionals, Students. The right fit depends on your specific requirements.
How do the pricing models compare?
Microsoft Copilot 365 is available under a Enterprise model. Grammarly is available under a Freemium model. Microsoft Copilot 365's entry tier starts at $30/user/mo. Grammarly's entry tier starts at $0/mo. Always verify pricing on each vendor's official website as it may change.
What integrations does each tool support?
Microsoft Copilot 365 integrates with Microsoft 365 ecosystem, Azure AD/Entra ID, Salesforce (Copilot connector), ServiceNow. Grammarly integrates with Microsoft Word, Google Docs, Gmail, Outlook. Check each vendor's documentation for the full and current list.
How do I choose between Microsoft Copilot 365 and Grammarly?
Consider your team's technical requirements, budget, existing tooling, and use case before deciding. We recommend signing up for free trials or demos of both tools where available, and consulting each vendor's documentation. AIHub provides this comparison for informational purposes only.
Feature Snapshot
Explore Further
Microsoft Copilot 365 full detailsGrammarly full detailsMicrosoft Copilot 365 official siteGrammarly official siteRelated Comparisons
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Data sourced from public vendor documentation. Pricing, features, and availability may change. Always verify on official vendor websites before making purchasing decisions. AIHub is not affiliated with any of the listed vendors.