Updated March 2026 · Independent Analysis
GrammarlyvsWindsurf (Codeium)
Grammarly starts at $12/mo, 20% cheaper than Windsurf (Codeium)'s $15/mo. Both rated 4.7/5 by users.
Grammarly
AI writing assistant for grammar, clarity, and tone — works across all your apps.
★ 4.7/5Founded 200930M+ users
Try Grammarly Free →
Windsurf (Codeium)
AI-native code editor by Codeium featuring the Cascade agent that understands and modifies entire codebases through multi-step reasoning.
★ 4.7/5Founded 2022200K+ users
Try Windsurf (Codeium) Free →⚡ Quick Stats
📊 Ratings Breakdown
Grammarly
4.7/5 avg
G2 Score4.7/5
Capterra Score4.7/5
Overall Avg4.7/5
Windsurf (Codeium)
4.7/5 avg
G2 Score4.7/5
Capterra Score4.6/5
Overall Avg4.65/5
⚡ 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 Windsurf (Codeium) if you need:
- ✓ Cascade AI agent
- ✓ Codebase awareness
- ✓ Multi-file editing
- ✓ Terminal integration
- ✓ Deep context understanding
🔧 Feature Comparison
Grammarly uniquely offers Grammar checking, Plagiarism detection, Tone suggestions. Windsurf (Codeium) uniquely offers Cascade AI agent, Codebase awareness, Multi-file editing. Both share 0 features.
Feature
Grammarly
Windsurf (Codeium)
Grammar checking
✓
✗
Plagiarism detection
✓
✗
Tone suggestions
✓
✗
Style improvements
✓
✗
Browser extension
✓
✗
MS Office plugin
✓
✗
Mobile app
✓
✗
Team style guide
✓
✗
Cascade AI agent
✗
✓
Codebase awareness
✗
✓
Multi-file editing
✗
✓
Terminal integration
✗
✓
Deep context understanding
✗
✓
Flows mode
✗
✓
Supercomplete
✗
✓
VS Code-based
✗
✓
Extensions support
✗
✓
Privacy mode
✗
✓
Team features
✗
✓
Claude/GPT-4 models
✗
✓
Total Features
8
12
💰 Pricing Comparison
Grammarly starts at $12/mo, 20% cheaper than Windsurf (Codeium)'s $15/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
Windsurf (Codeium) Plans
Free tier available
Free
Free- • 200 Cascade uses/mo
- • Supercomplete
- • VS Code-based
ProBest Value
$15/mo- • Unlimited Cascade
- • All models
- • Priority access
🔔 Get notified when prices change
❓ Frequently Asked Questions
Was this comparison helpful?
📬 Stay updated on SaaS pricing changes
Get notified when tools update their pricing or features