LanguageTool vs Grammarly — Head-to-Head Comparison
Quick verdict: Grammarly edges ahead
with a 4.5/5 rating vs 4.3/5.
See the full breakdown below.
Feature Comparison
| Feature | LanguageTool | Grammarly |
|---|---|---|
| Grammar and style checking in 30+ languages | ✓ | — |
| Real-time corrections as you type | ✓ | — |
| Browser extension (Chrome, Firefox, Edge, Safari) | ✓ | — |
| Microsoft Word and Google Docs add-ins | ✓ | ✓ |
| LibreOffice add-in | ✓ | — |
| AI-powered paraphrasing suggestions | ✓ | — |
| Picky Mode (advanced style suggestions) | ✓ | — |
| Custom dictionary and rules | ✓ | — |
| Team management (Premium) | ✓ | — |
| API access for developers | ✓ | — |
| Real-time grammar, spelling, and punctuation correction | — | ✓ |
| Tone Detector | — | ✓ |
| Clarity and conciseness suggestions | — | ✓ |
| Vocabulary enhancement | — | ✓ |
| Plagiarism detection (Premium) | — | ✓ |
| GrammarlyGO (generative AI rewrites and suggestions) | — | ✓ |
| Style Guides (Business plan) | — | ✓ |
| Browser extension (Chrome, Firefox, Safari, Edge) | — | ✓ |
| Desktop app for Windows and Mac | — | ✓ |
Pricing Comparison
| Plan | LanguageTool | Grammarly |
|---|---|---|
| Starting price | Free | Free |
| Free plan | Yes | Yes |
| Pricing model | Subscription | Subscription |
Which Should You Choose?
Choose LanguageTool if...
Open-source AI grammar checker supporting 30+ languages including German, French, Spanish
Try LanguageTool FreeChoose Grammarly if...
AI writing assistant trusted by 30 million daily users for grammar and clarity
Try Grammarly Free