LanguageTool

LanguageTool is a grammar, spelling and style checker built for people who write in more than one language. Alongside English it checks German, Spanish, French, Portuguese, Dutch and more than 30 other languages, including Tamil, and it adds an AI paraphrasing tool on top. Its Chrome extension alone has over 3 million users, and the company says 2,000+ organizations use its writing tools.

This LanguageTool review covers its features, Premium pricing, what the free version includes, privacy, and how it compares with Grammarly.

What LanguageTool does

• Grammar and punctuation: catches word order, tense, agreement and comma errors that basic spellcheckers in Word or Gmail miss.
• Style suggestions: flags repetition, wordiness, overused phrases and informal style.
• Semantics and formatting: spots wrong dates, word confusion, double negatives and inconsistent number, date and currency formats.
• AI paraphrasing: rewrites sentences to sound clearer, more formal or shorter.
• Personal dictionary, style guide and text statistics to keep your writing consistent.

LanguageTool Premium pricing (2026)

Prices are shown in your local currency, including VAT, so readers in the US see US dollar prices on the official Premium page. In India, Premium for one person costs:

• 2 years: ₹5,999 (about ₹249.96 a month), the cheapest option.
• Annual: ₹3,499 a year (about ₹291.58 a month), the bestseller.
• Quarterly: ₹1,999 a quarter (about ₹666.33 a month).
• Monthly: ₹999 a month.

Teams plans start from 2 users and add user management, a team style guide and a team dictionary. You pay by PayPal or credit card, can cancel at any time, and get a 14-day money-back guarantee on all Premium plans. Check the official Premium page for current prices.

Is LanguageTool free?

Yes, and you can even use the browser add-on without an account. The free version checks up to 2,000 characters per text field, includes basic grammar, spelling and style checks in all languages, and gives you 3 AI sentence rephrasings a day. Premium raises the limit to 150,000 characters, unlocks advanced grammar, punctuation and style checks, unlimited AI paraphrasing and the personal style guide.

Where LanguageTool works

LanguageTool has add-ons for Chrome, Edge, Firefox, Safari and Opera; Gmail, Outlook (beta), Apple Mail and Thunderbird; and Google Docs, Microsoft Word, Apple Pages and LibreOffice. There are apps for Windows, macOS and iOS, and a proofreading API for developers. Premium works on all your devices at no extra cost.

Developers can also run its open-source core as their own server. That self-hosted version is basic: the AI-based rules only run in the company’s cloud.

Privacy

The company says texts you write through the browser add-on are usually not saved; only texts in its own editor are stored so you can open them on other devices. Its business plans are positioned as GDPR-compliant. For sensitive work, read the privacy policy and consider the self-hosted open-source server.

How to get started

Install the free browser add-on, choose your preferred English variety, such as US or UK English, and write as usual. Add names and brand terms to your personal dictionary so they stop being flagged. If you write in two languages, simply switch between them; the checker follows the language you type. Use the free plan for a week, and upgrade only if you keep hitting the character limit or want unlimited AI paraphrasing.

LanguageTool vs Grammarly

Grammarly is English-only but has more generative AI features and tone tools. LanguageTool is the better choice if you write in several languages, want cheaper long-term plans, or prefer an open-source option. ProWritingAid goes deeper on style for long-form writers. Compare them: LanguageTool vs Grammarly vs ProWritingAid.

LanguageTool review verdict: who it is for

It suits multilingual writers, students and professionals writing in English as a second language, and teams that need a shared style guide. Browse more AI writing tools and AI tools for students.

Visit the official website to try it free.