Grammarly vs Microsoft Copilot — Which One Wins?
A detailed, side-by-side comparison of Grammarly and Microsoft Copilot to help you pick the right tool for your workflow.
Quick Verdict
Microsoft Copilot takes the lead with a 4.5 rating and is best for organizations already using microsoft 365 who want ai in their existing workflow. Grammarly (4.5) is the better pick if you need anyone who writes professionally and wants real-time grammar, tone, and clarity improvements everywhere..
Side-by-Side Comparison
| Criteria | Grammarly | Microsoft Copilot |
|---|---|---|
| Rating | ★★★★ 4.5(423) | ★★★★★ 4.5(41) |
| Pricing Model | freemium | freemium |
| Starter Price | $12/mo (Premium, billed annually) | $30/user/mo |
| Free Tier | Yes | No |
| Platforms | web, ios, android, mac, windows | Web, Windows, Mac, iOS, Android |
| Learning Curve | easy | easy |
| API Available | No | Yes |
| Best For | Anyone who writes professionally and wants real-time grammar, tone, and clarity improvements everywhere. | Organizations already using Microsoft 365 who want AI in their existing workflow |
| Verdict | recommended | recommended |
Feature Checklist
| Feature | Grammarly | Microsoft Copilot |
|---|---|---|
| Grammar and spelling checks | — | |
| Tone detection | — | |
| GrammarlyGO AI assistant | — | |
| Style guide (Business) | — | |
| Plagiarism detection | — | |
| Works everywhere (browser, desktop, mobile) | — | |
| Brand tones (Business) | — | |
| Deep Microsoft 365 integration | — | |
| Document and email generation | — | |
| Excel data analysis | — | |
| PowerPoint slide creation | — | |
| Teams meeting summaries | — |
Grammarly
Pros
- ✓Works everywhere you type with seamless integrations
- ✓Best-in-class grammar and clarity suggestions
- ✓Free tier is genuinely useful, not just a teaser
Cons
- ✕GrammarlyGO AI generation is weaker than dedicated tools like ChatGPT
- ✕Premium price adds up across team seats
- ✕Can be overly aggressive with suggestions, especially for creative writing
Microsoft Copilot
Pros
- ✓Seamless Microsoft 365 integration
- ✓Excellent at document generation
- ✓Meeting summaries are a time-saver
- ✓Enterprise-grade security
Cons
- ✕Expensive at $30/user/month
- ✕Requires Microsoft 365 subscription
- ✕Less useful outside Microsoft apps
The Bottom Line
Both Grammarly and Microsoft Copilot are solid tools in the AI Writing & Content space. Microsoft Copilot edges ahead with a stronger overall rating (4.5 vs 4.5) and is the better choice for organizations already using microsoft 365 who want ai in their existing workflow. However, if you prioritize anyone who writes professionally and wants real-time grammar, tone, and clarity improvements everywhere., Grammarly is worth serious consideration. We recommend trying the free tier or trial of each before committing.