Pricing
- Unlimited sentence paraphrasing powered by A.I.
- Create custom rules to enforce consistent wording throughout your writing.
- All benefits for Premium
- User management
- Check texts up to 150,000 characters
- Team Style Guide
Pricing from the official site, verified Jun 2026. Always confirm current prices on the vendor site.
Pros & cons
Our analysisPros
- Supports grammar and spelling in 30+ languages
- Free tier available
- Integrates with Word, Docs, and LibreOffice
- Affordable paid plans from $4.99/month
Cons
- No API access
- Advanced features gated behind paid plans
- Primarily a grammar tool, not a full writing assistant
What users say
LanguageTool is commonly used for proofreading across multiple languages in everyday writing tools like Google Docs and Microsoft Word. A frequently noted strength is its broad language support and native integrations with major word processors. A common limitation is the absence of an API, and deeper style suggestions are reserved for paid tiers.
Editorial summary based on public information.
Best for
Writers and professionals needing multilingual grammar checking
Manually choose competitor 
LanguageTool
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Monster Labs| Feature | LanguageTool | Jasper AI |
|---|---|---|
| Pricing | Freemium | Freemium |
| Price from | $4.99/mo | $59/mo |
| Free tier | Yes | Yes |
| API | No | Yes |
| Open source | No | No |
| Platforms | Mobile App | Web |
| Models | Languagetool | Jasper |
| Context window | 128k | 32k |
| Launched | 2017 | 2020 |
| Languages | English (US), Arabic, Asturian +27 more | — |
| Integrations | Google Docs Add-on, MacOS App For Microsoft Word, Microsoft Word Add-in +1 more | — |
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Verified Jun 2026
Specs
| Pricing | Freemium |
|---|---|
| Price from | $4.99/mo |
| Free tier | Yes |
| API | No |
| Open source | No |
| Platforms | Mobile App |
| Models | Languagetool |
| Languages | English (US), Arabic, Asturian, Belarusian, Breton, Catalan +24 more |
| Integrations | Google Docs Add-on, MacOS App For Microsoft Word, Microsoft Word Add-in, LibreOffice |
| Context window | 128k |
| Launched | 2017 |