# LanguageTool — AI Compare Ninja

> AI-powered grammar, spelling and style checker for 30+ languages, with a strong DACH and EU-privacy focus.

## Overview
- **Category:** Content & SEO (Editing & paraphrasing)
- **Status:** Active · checked - Active.
- **Paid from:** Not verified for this market / Month (Premium Monthly)
- **Free access:** Free plan
- **Website:** https://languagetool.org/
- **Canonical URL:** https://www.aicompare.ninja/en/tool/languagetool

## What it does
- Grammar and spell check up to 2,000 characters on the free plan
- Premium: up to 150,000 characters per text field
- Unlimited AI sentence and text rewriting from Premium
- Team style guide for consistent corporate language and writing conventions
- Browser add-on for Chrome, Firefox, Edge, Safari, and other browsers
- The browser extension's default configuration sends text for server-side checking

## In brief
LanguageTool is a grammar and spell checker available as a browser add-on, desktop app, and API. The free plan checks up to 2,000 characters per text field; Premium raises this limit to 150,000 characters and unlocks unlimited AI rewriting.

The browser extension does not run purely locally: its default configuration sends text to a server for checking. Review the settings and privacy information before entering confidential content. Teams can define shared writing rules through a style guide.


## Limits
Free LanguageTool checks up to 2,000 characters per text field and allows 3 AI rewrites daily. Premium raises the text-field limit to 150,000 characters and offers rewrites without a quantity limit. Monthly, quarterly, annual, and two-year billing are available. Team prices depend on the selected seat count; a team annual total is not a monthly per-user price.

## Pricing tiers
| Tier | Price | Period | What you get |
| --- | --- | --- | --- |
| Free | free | - | Grammar/spelling check up to 2,000 characters; 3 AI rewrites per day |
| Premium Monthly | Not verified for this market | Month | Up to 150,000 characters; Unlimited AI paraphrasing |
| Premium Yearly | Not verified for this market | year | Same as Premium Monthly |
| Teams (2 seats) | Not verified for this market | year | All Premium benefits; Team style guide; Annual total for 2 seats in the configurator; larger teams have different prices, VAT included |
| Premium (quarterly) | Not verified for this market | quarter | Up to 150,000 characters; Unlimited AI paraphrasing |
| Premium (2 years) | Not verified for this market | 2 years | Up to 150,000 characters; Unlimited AI paraphrasing |

## Sources
All details regarding plans, limits, and features are based on official vendor documentation and the primary sources verified below.

- https://languagetool.org/
- https://languagetool.org/legal
- https://languagetool.org/premium
- https://languagetool.org/es/premium
- https://languagetool.org/legal/privacy

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*Source: AI Compare Ninja (2026) - https://www.aicompare.ninja/en/tool/languagetool*