# LanguageTool

> Multilingual grammar, spelling and style checker with a free Basic plan and a paid Premium tier.

LanguageTool checks grammar, punctuation, spelling and style in 30+ languages via browser extensions, desktop apps and add-ins. Premium adds advanced style checks, longer texts and a paraphrasing tool.

- Vendor: LanguageTooler GmbH
- Website: https://languagetool.org
- Category: writing
- Free plan: yes
- Last reviewed: 2026-10-16
- Canonical: https://onelesstool.com/tools/languagetool
- JSON: https://onelesstool.com/api/v1/tools/languagetool

## Plans

| Plan | USD | Unit | Evidence | Source |
|---|---|---|---|---|
| Basic | $0 | account/month | verified 2026-10-16 | https://languagetool.org/premium_new |
| Premium | not listed | seat/month | unverified | https://languagetool.org/premium_new |

## Capabilities

| Capability | Fit | Plans | Limitations |
|---|---|---|---|
| Proofread and improve writing (`grammar-editing`) | native | all | Free plan misses many style checks |
| Write marketing and business copy (`writing-copy`) | partial | all | Not a generative writing assistant |

## Why people pay for it

- Advanced grammar and style checks
- Longer texts
- Unlimited paraphrasing

## Reasons to keep paying

- Strong support for languages beyond English (German, French, Spanish, Dutch, Portuguese)
- Works across browsers, Office and desktop apps

## Risks

- **sensitive_data** (medium): Checked text is sent to LanguageTool's servers unless self-hosted.

Data portability: easy — Text stays in your own documents; only personal dictionaries live in the account.

## Sources

- LanguageTool Premium: https://languagetool.org/premium_new (accessed 2026-10-16)