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LanguageTool

AI-based grammar, spelling, punctuation and style checker with a paraphrasing tool.

FreemiumChecked

LanguageTool is an AI-based grammar, spelling, punctuation and style checker with a paraphrasing tool, available as browser add-ons, macOS and Windows apps, and an API. A free Basic version allows 2,000 characters per text field, and Premium is listed at $12.45 per month billed monthly on its pricing page, shown at a 50% discount at capture. It suits anyone who wants to check grammar across apps.

Visit languagetool.org
LanguageTool homepage, captured Nov 8, 2026
languagetool.org homepage, captured Nov 8, 2026.

What LanguageTool does

LanguageTool checks text for grammar mistakes, spelling errors, punctuation, casing and style, including overused phrases, redundant words and word choice. A paraphrasing tool rephrases sentences to be more formal, fluent, simple or concise, and Picky Mode adds advanced punctuation, style and typography suggestions. A personal dictionary and writing statistics are included.

It is built to follow you between apps. Browser add-ons are listed for Chrome, Edge, Firefox, Opera and Safari, and the add-on detects the language you are writing in; the site states the add-on does not store text. There are apps for macOS and Windows, plus add-ons for Google Docs, Word, Apple Pages, LibreOffice, Gmail, Apple Mail and Thunderbird. Developers and companies get a Proofreading API and a business offering described as GDPR-conform.

The free Basic version allows 2,000 characters per text field and 3 A.I. sentence rephrasings per day, with Picky Mode limited. Premium raises the limit to 150,000 characters per text field and adds unlimited paraphrasing. It can be paid monthly, quarterly, annually or every 2 years; at capture every interval was shown at -50%, with the annual option at $34.95 per year.

Features

  • Grammar checking
  • Spelling correction
  • Punctuation checking
  • Casing correction
  • Style suggestions (overused phrases, redundant words, word choice)
  • AI paraphrasing tool
  • Picky Mode for advanced punctuation, style and typography suggestions
  • Personal dictionary
  • Writing statistics
  • Automatic language detection in the browser add-on
  • Proofreading API

LanguageTool pricing

Checked
LanguageTool plans and prices as listed on its pricing page
PlanPriceWhat's included (as stated)
BasicFree
  • Try for free
  • 2,000 characters per text field
  • Sentence rephrasing by A.I.: 3 per day
Premium$12.45/mobilled monthly
  • Monthly interval: $24.90 $12.45 per month (-50 % discount shown)
  • Annual interval: $69.90 $34.95 /year ($2.91 per month)
  • 2 years interval: $119.80 $59.90 /2 years ($2.50 per month)
  • Quarterly interval: $49.90 $24.95 /quarter ($8.32 per month)
  • Up to 150,000 characters per text field
  • Unlimited sentence paraphrasing powered by A.I.
  • All prices incl. VAT

Copied from LanguageTool's pricing page on Nov 8, 2026. Prices change, so confirm before you buy.

Strengths and limits

Each point comes from the features and plan details above. No point is an opinion.

Strengths

  • Browser add-ons cover Chrome, Edge, Firefox, Opera and Safari, plus apps for macOS and Windows.
  • The site states the browser add-on does not store text.
  • A free Basic version is available, with 2,000 characters per text field.
  • Premium allows up to 150,000 characters per text field and unlimited A.I. paraphrasing.

Limits

  • The free version allows only 3 A.I. sentence rephrasings per day.
  • Premium prices were shown as a -50% promotion at capture, so the list price is higher.

LanguageTool FAQ

Is LanguageTool free?

Yes. The Basic version is free, with 2,000 characters per text field, 3 A.I. sentence rephrasings per day and a limited Picky Mode.

How much does LanguageTool Premium cost?

Premium is listed at $12.45 per month on the monthly interval, or $34.95 per year on the annual interval, both shown at -50% at capture; the struck list prices were $24.90 per month and $69.90 per year. The page states all prices include VAT.

Where this listing comes from

Facts were read from these pages on Nov 8, 2026. The description was written from those facts. See the methodology.

Something out of date? Report a correction. Corrections are free.

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