Updated March 2026 · Independent Analysis
GrammarlyvsChatGPT
Grammarly starts at $12/mo, 40% cheaper than ChatGPT's $20/mo. Both rated 4.7/5 by users.
Grammarlyvs ChatGPT
★ 4.7/5
Only in Grammarly
- ✦ Grammar checking
- ✦ Plagiarism detection
- ✦ Tone suggestions
✓ Free planFrom $12/mo(cheaper)30M+ users · est. 2009
Try Grammarly Free →
ChatGPTvs Grammarly
★ 4.7/5
Only in ChatGPT
- ✦ AI text generation
- ✦ Code assistance
- ✦ Image generation
✓ Free planFrom $20/mo(pricier)100M+ users · est. 2022
Try ChatGPT Free →Ratings Breakdown
Grammarly
4.7/5 avg
G2 Score4.7/5
Capterra Score4.7/5
G2 Rating4.7/5
ChatGPT
4.7/5 avg
G2 Score4.7/5
Capterra Score4.6/5
G2 Rating4.7/5
Quick Stats
Feature Comparison
Grammarly uniquely offers Grammar checking, Plagiarism detection, Tone suggestions. ChatGPT uniquely offers AI text generation, Code assistance, Image generation. Both share 0 features.
Feature
Grammarly
ChatGPT
Grammar checking
✓
✗
Plagiarism detection
✓
✗
Tone suggestions
✓
✗
Style improvements
✓
✗
Browser extension
✓
✗
MS Office plugin
✓
✗
Mobile app
✓
✗
Team style guide
✓
✗
AI text generation
✗
✓
Code assistance
✗
✓
Image generation
✗
✓
Data analysis
✗
✓
Plugins/GPTs
✗
✓
API access
✗
✓
Voice mode
✗
✓
Web browsing
✗
✓
Conversational Flow Control
✗
✓
Personalized Learning Paths
✗
✓
Advanced Sentiment Mapping
✗
✓
Multi Language Support
✗
✓
Intelligent Summarization Tools
✗
✓
Customizable Tone Options
✗
✓
Contextual Understanding Engine
✗
✓
Total Features
8
15
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 ChatGPT if you need:
- ✓ AI text generation
- ✓ Code assistance
- ✓ Image generation
- ✓ Data analysis
- ✓ Plugins/GPTs
Pricing Comparison
Grammarly starts at $12/mo, 40% cheaper than ChatGPT'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
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
🔔 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