Updated March 2026 · Independent Analysis
Mistral AIvsGrammarly
Mistral AI is free; Grammarly starts at $12/mo. Grammarly is rated higher at 4.7/5 vs Mistral AI's 4.5/5.
Mistral AI
European AI company offering powerful open-source and commercial language models with a strong focus on efficiency and data sovereignty.
★ 4.5/5Founded 2023500K+ users
Try Mistral AI Free →
Grammarly
AI writing assistant for grammar, clarity, and tone — works across all your apps.
★ 4.7/5Founded 200930M+ users
Try Grammarly Free →⚡ Quick Stats
📊 Ratings Breakdown
Mistral AI
4.5/5 avg
G2 Score4.5/5
Capterra Score4.4/5
Overall Avg4.45/5
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 Mistral AI if you need:
- ✓ Mistral Large/Small/Nemo
- ✓ Open source models
- ✓ Function calling
- ✓ JSON mode
- ✓ Multimodal (Pixtral)
Choose Grammarly if you need:
- ✓ Grammar checking
- ✓ Plagiarism detection
- ✓ Tone suggestions
- ✓ Style improvements
- ✓ Browser extension
🔧 Feature Comparison
Mistral AI uniquely offers Mistral Large/Small/Nemo, Open source models, Function calling. Grammarly uniquely offers Grammar checking, Plagiarism detection, Tone suggestions. Both share 0 features.
Feature
Mistral AI
Grammarly
Mistral Large/Small/Nemo
✓
✗
Open source models
✓
✗
Function calling
✓
✗
JSON mode
✓
✗
Multimodal (Pixtral)
✓
✗
Self-hostable
✓
✗
Fast inference
✓
✗
Code generation
✓
✗
Le Chat assistant
✓
✗
Agents API
✓
✗
Batch processing
✓
✗
European data compliance
✓
✗
Grammar checking
✗
✓
Plagiarism detection
✗
✓
Tone suggestions
✗
✓
Style improvements
✗
✓
Browser extension
✗
✓
MS Office plugin
✗
✓
Mobile app
✗
✓
Team style guide
✗
✓
Total Features
12
8
💰 Pricing Comparison
Mistral AI is free; Grammarly starts at $12/mo.
Mistral AI Plans
Free tier available
Free API
Free- • Rate-limited access
- • Mistral Small
- • Experimental features
Pay per use
Free- • Per-token pricing
- • All models
- • Production ready
Enterprise
Custom- • Dedicated deployment
- • Custom models
- • EU data residency
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
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❓ Frequently Asked Questions
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