CompareStack/ChatGPT vs Grammarly
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Updated March 2026 · Independent Analysis

ChatGPTvsGrammarly

Grammarly starts at $12/mo, 40% cheaper than ChatGPT's $20/mo. Both rated 4.7/5 by users.

C
ChatGPT

AI chatbot by OpenAI — the most widely used AI assistant for writing, coding, and analysis.

★ 4.7/5Founded 2022100M+ users
Try ChatGPT Free →
G
Grammarly

AI writing assistant for grammar, clarity, and tone — works across all your apps.

★ 4.7/5Founded 200930M+ users
Try Grammarly Free →

⚡ Quick Stats

⭐
Avg Rating
ChatGPT4.7/5
Grammarly4.7/5
🏆 ChatGPT wins
💰
Starting Price
ChatGPT$20/mo
Grammarly$12/mo
🏆 Grammarly wins
🔧
Features
ChatGPT8
Grammarly8
🏆 ChatGPT wins
🎁
Free Plan
ChatGPTYes ✓
GrammarlyYes ✓

📊 Ratings Breakdown

C

ChatGPT

4.7/5 avg
G2 Score4.7/5
Capterra Score4.6/5
Overall Avg4.65/5
G

Grammarly

4.7/5 avg
G2 Score4.7/5
Capterra Score4.7/5
Overall Avg4.7/5

⚡ Quick Verdict

Independent analysis based on features, pricing, and user ratings

Choose ChatGPT if you need:
  • ✓ AI text generation
  • ✓ Code assistance
  • ✓ Image generation
  • ✓ Data analysis
  • ✓ Plugins/GPTs
Try ChatGPT Free →
Choose Grammarly if you need:
  • ✓ Grammar checking
  • ✓ Plagiarism detection
  • ✓ Tone suggestions
  • ✓ Style improvements
  • ✓ Browser extension
Try Grammarly Free →

🔧 Feature Comparison

ChatGPT uniquely offers AI text generation, Code assistance, Image generation. Grammarly uniquely offers Grammar checking, Plagiarism detection, Tone suggestions. Both share 0 features.

Feature
ChatGPT
Grammarly
AI text generation
✓
✗
Code assistance
✓
✗
Image generation
✓
✗
Data analysis
✓
✗
Plugins/GPTs
✓
✗
API access
✓
✗
Voice mode
✓
✗
Web browsing
✓
✗
Grammar checking
✗
✓
Plagiarism detection
✗
✓
Tone suggestions
✗
✓
Style improvements
✗
✓
Browser extension
✗
✓
MS Office plugin
✗
✓
Mobile app
✗
✓
Team style guide
✗
✓
Total Features
8
8

💰 Pricing Comparison

Grammarly starts at $12/mo, 40% cheaper than ChatGPT's $20/mo.

C

ChatGPT Plans

Free tier available

Free
Free
  • • GPT-3.5
  • • Limited GPT-4o
  • • Basic features
PlusBest Value
$20/month
  • • GPT-4o
  • • DALL-E 3
  • • Advanced data analysis
  • • Plugins
Team
$30/month
  • • Everything in Plus
  • • Higher limits
  • • Admin console
Full ChatGPT pricing breakdown →
G

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
Full Grammarly pricing breakdown →
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❓ Frequently Asked Questions

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