Updated March 2026 · Independent Analysis
GrammarlyvsMicrosoft Copilot
Grammarly starts at $12/mo, 40% cheaper than Microsoft Copilot's $20/mo. Grammarly is rated higher at 4.7/5 vs Microsoft Copilot's 4.5/5.
Grammarly
AI writing assistant for grammar, clarity, and tone — works across all your apps.
★ 4.7/5Founded 200930M+ users
Try Grammarly Free →
Microsoft Copilot
Microsoft's AI assistant powered by GPT-4o, integrated across Windows, Office apps, Edge browser, and Bing with multimodal capabilities.
★ 4.5/5Founded 202330M+ users
Try Microsoft Copilot Free →⚡ Quick Stats
📊 Ratings Breakdown
Grammarly
4.7/5 avg
G2 Score4.7/5
Capterra Score4.7/5
Overall Avg4.7/5
Microsoft Copilot
4.5/5 avg
G2 Score4.5/5
Capterra Score4.4/5
Overall Avg4.45/5
⚡ Quick Verdict
Independent analysis based on features, pricing, and user ratings
Choose Grammarly if you need:
- ✓ Grammar checking
- ✓ Plagiarism detection
- ✓ Tone suggestions
- ✓ Style improvements
- ✓ Browser extension
Choose Microsoft Copilot if you need:
- ✓ GPT-4o powered
- ✓ Image generation (DALL-E)
- ✓ Web search
- ✓ Office integration
- ✓ Designer tool
🔧 Feature Comparison
Grammarly uniquely offers Grammar checking, Plagiarism detection, Tone suggestions. Microsoft Copilot uniquely offers GPT-4o powered, Image generation (DALL-E), Web search. Both share 1 features including Mobile app.
Feature
Grammarly
Microsoft Copilot
Mobile app
✓
✓
Grammar checking
✓
✗
Plagiarism detection
✓
✗
Tone suggestions
✓
✗
Style improvements
✓
✗
Browser extension
✓
✗
MS Office plugin
✓
✗
Team style guide
✓
✗
GPT-4o powered
✗
✓
Image generation (DALL-E)
✗
✓
Web search
✗
✓
Office integration
✗
✓
Designer tool
✗
✓
Word/Excel/PowerPoint AI
✗
✓
Teams integration
✗
✓
Code interpreter
✗
✓
Voice mode
✗
✓
Plugin support
✗
✓
Enterprise data protection
✗
✓
Total Features
8
12
💰 Pricing Comparison
Grammarly starts at $12/mo, 40% cheaper than Microsoft Copilot's $20/mo.
Grammarly Plans
Free tier available
Free
Free- • Basic grammar
- • Spelling
- • Punctuation
PremiumBest Value
$12/month- • Style suggestions
- • Tone detection
- • Plagiarism checker
- • Full rewrites
Business
$15/month- • Team features
- • Style guide
- • Analytics
- • Priority support
Microsoft Copilot Plans
Free tier available
Free
Free- • GPT-4o access
- • Web search
- • Image generation
ProBest Value
$20/mo- • Priority access
- • Office integration
- • Faster responses
Microsoft 365
$30/mo- • Full Office Copilot
- • Teams integration
- • Enterprise features
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❓ Frequently Asked Questions
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