GrammarlyFreemium
AI writing assistant for grammar, clarity, tone, and generative drafts across every app you write in.
AI / LLM comparison
Grammarly vs Microsoft Copilot
Pricing, pros, cons, and ideal use cases — side by side.
Microsoft's AI assistant embedded across Windows, Office, Edge, and Microsoft 365 business apps.
At a glance
| Grammarly | Microsoft Copilot | |
|---|---|---|
| Pricing | FreemiumFree plan available. Premium $12/month. Business from $15/seat/month. | PaidCopilot Pro $20/user/month. Microsoft 365 Copilot $30/user/month (requires M365 license). |
| Category | AI / LLM | AI / LLM |
| Ideal for | Any SMBLaw FirmsAgenciesCustomer Support TeamsProfessional Services | Any SMB on Microsoft 365Professional ServicesFinancial ServicesAccountants |
Pros & cons
Grammarly
Pros
- Works in every major app
- Strong brand voice features
- Tone detection is excellent
- Good generative AI drafts
Cons
- Browser extension can slow pages
- Plagiarism check is weaker than dedicated tools
- Advanced suggestions need premium
Microsoft Copilot
Pros
- Deep Microsoft 365 integration
- Excellent in Excel and Outlook
- Teams meeting summaries
- Enterprise-grade security
Cons
- Requires Microsoft 365 license
- Limited outside Microsoft ecosystem
- Output quality varies by app
Which should you choose?
Grammarly is the lighter-weight option (Freemium), while Microsoft Copilot sits higher on the pricing ladder (Paid). Grammarly is built around any smb; Microsoft Copilot leans more toward any smb on microsoft 365. Shortlist the one whose strengths line up with your biggest constraint.