LanguageTool is a grammar, spelling and style checker that works in more than 30 languages, with a usable free plan and a low long term Premium price. It is worth it for people who write in more than one language or want a cheap Grammarly alternative, but English only writers who want the most polished AI suggestions may prefer Grammarly.
What LanguageTool is
LanguageTool checks your writing for grammar, spelling, punctuation and style problems as you type. It supports more than 30 languages, including English, German, Spanish, French, Dutch and Brazilian Portuguese LanguageTool Premium ↗. It also offers AI sentence rephrasing, which rewrites a sentence for you LanguageTool Premium ↗.
It runs almost everywhere you write: browser extensions for Chrome, Edge, Firefox, Opera and Safari, add ons for Google Docs, Word, Apple Pages and LibreOffice, and support for Gmail, Apple Mail, Thunderbird and Outlook (in beta) LanguageTool Premium ↗. There are desktop apps for macOS and Windows, an iOS app and a proofreading API for developers LanguageTool Premium ↗ LanguageTool ↗. LanguageTool says more than 2,000 organizations use its tools LanguageTool ↗.
There are four tiers: a free Basic plan, Premium, Teams, and LT for Business, which is aimed at companies that need GDPR compliant tools and a consistent brand voice LanguageTool Premium ↗ LT for Business ↗. The core of the checker is open source, and eesel AI notes a self hosting option eesel AI ↗.
What it does well
Languages are the main reason to pick it. Premium unlocks all languages and dialects plus more than 20,000 extra checks for English, German, French, Spanish, Dutch, Polish and Portuguese LanguageTool Premium ↗. eesel AI cites a benchmark where LanguageTool caught 19 of 20 non English errors against 11 of 20 for Grammarly, though the benchmark source is not named eesel AI ↗.
The long term price is low. eesel AI lists Premium at $4.99 a month on a 2 year plan and $5.83 a month billed yearly ($69.90 a year) eesel AI ↗. That undercuts Grammarly Pro, which eesel lists at $12 a month billed yearly eesel AI ↗.
Premium handles long documents. It checks up to 150,000 characters per text field, against 2,000 on the free plan, and adds unlimited AI rephrasing, a personal style guide, a personal dictionary, text statistics and full Picky Mode for stricter style checks LanguageTool Premium ↗.
Teams get shared tools: a team style guide, a team dictionary and user management LanguageTool Premium ↗ LT for Business ↗. Privacy is a selling point too. The browser add on does not store your text, and the business offer is GDPR compliant with a data processing agreement LanguageTool ↗ LT for Business ↗.
Where it falls short
The free plan is tight for long text. It checks only 2,000 characters per text field, allows 3 AI rephrasings a day and limits Picky Mode LanguageTool Premium ↗. That is fine for emails but not for a full report.
Short billing is expensive. eesel AI lists $24.90 a month if you pay monthly and $16.63 a month on quarterly billing, so the low price only applies if you commit for a year or two eesel AI ↗.
English AI suggestions are less polished than Grammarly's, according to eesel AI, which also rates support response times lower and notes there is no plagiarism checker eesel AI ↗.
Prices did not display on the vendor page when we checked LanguageTool Premium ↗. The figures here come from eesel AI and may differ by region. Hands on testing is in progress, and we will update this review.
Pricing and plans
Basic is free. It covers core grammar, spelling and style checks, with limits of 2,000 characters per text field and 3 AI sentence rephrasings per day LanguageTool Premium ↗.
Premium is billed monthly, quarterly, yearly or every 2 years LanguageTool Premium ↗. eesel AI lists it at $24.90 a month monthly, $16.63 a month quarterly, $5.83 a month yearly ($69.90) and $4.99 a month on the 2 year plan eesel AI ↗. The vendor page also advertised a limited time 20 percent discount on Premium LanguageTool Premium ↗.
Teams pricing is per seat and was not shown as a fixed figure; LT for Business has no public price LanguageTool Premium ↗ eesel AI ↗ LT for Business ↗.
There is no separate Premium free trial listed. Instead, every Premium package has a 14 day money back guarantee with no questions asked LanguageTool Premium ↗. Subscriptions renew automatically and can be canceled anytime, and you can pay by card or PayPal LanguageTool Premium ↗.
Who should (and shouldn't) use it
- Good fit: people and teams who write in more than one language, such as international businesses or language teachers eesel AI ↗.
- Good fit: budget minded users who mainly need grammar checking and can commit to a yearly or 2 year plan eesel AI ↗.
- Good fit: companies with privacy needs that value GDPR compliance or self hosting LanguageTool Premium ↗ eesel AI ↗.
- Skip it if: you write only in English and want the most polished AI rewrite suggestions; Grammarly is stronger there eesel AI ↗.
- Skip it if: you need a plagiarism checker, which LanguageTool does not include eesel AI ↗.
Alternatives worth a look
- Grammarly: the better pick for English only writers who want polished AI suggestions, at $12 a month billed yearly eesel AI ↗.
- ProWritingAid: deeper style reports and a lifetime license option, with Premium at $10 a month billed yearly eesel AI ↗.
- QuillBot: a cheap paraphraser with a grammar checker, with Premium at $8.33 a month billed yearly eesel AI ↗.
- DeepL Write: a strong rewrite tool for multilingual users, offered as a $7.49 a month add on eesel AI ↗.
What’s good
- Many languages
- Low long term price
- Free plan
What to know
- Free checks limited to 2,000 characters
- Prices did not display on vendor page
Key features
- 30+ languages
- Personal dictionary
- Personal style guide
- AI rephrasing
Questions people ask
Is LanguageTool free?
Yes. The Basic plan is free and covers grammar, spelling and style checks, limited to 2,000 characters per text field and 3 AI rephrasings a day LanguageTool Premium ↗.
How much does LanguageTool Premium cost?
eesel AI lists $4.99 a month on a 2 year plan, $5.83 a month billed yearly, $16.63 a month quarterly and $24.90 billed monthly eesel AI ↗. The vendor page did not display prices when we checked LanguageTool Premium ↗.
Is LanguageTool better than Grammarly?
For non English writing it often is; eesel AI cites a benchmark where it caught more non English errors. For English, Grammarly's AI suggestions are more polished eesel AI ↗.
Does LanguageTool have a refund policy?
Yes. All Premium packages come with a 14 day money back guarantee LanguageTool Premium ↗.
Where this comes from
Checked Oct 9, 2026. Vendor pages describe their own products; independent sources add outside views. Hands on testing is in progress.
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