Multilingual writers
Check grammar and spelling across more than 30 languages and regional variants.
Independent tool overview
LanguageTool at a glance
LanguageTool is a multilingual spelling, grammar, punctuation, and style checker that works in browsers, office apps, desktop editors, and through an API.
Visit the official LanguageTool site ↗
- Product type
- Grammar, spelling, and style checker
- Languages
- 30+ languages and dialects
- Free plan
- Yes
- Premium text limit
- Up to 150,000 characters per field
- Integrations
- Browsers, Word, Google Docs, Pages, LibreOffice, desktop and iOS
- Developer access
- Hosted HTTP API and open-source server
- Owner
- Learneo, Inc.
Overview
What LanguageTool is
LanguageTool is strongest for people who write across languages or want proofreading directly inside the websites and office apps they already use. It checks more than spelling, adding grammar, punctuation, style, typography, repetition, and word-choice suggestions.
The Basic plan covers short, everyday checks, while Premium unlocks a much larger rule set, longer text fields, unlimited AI sentence paraphrasing, and personal style-guide rules. Team plans add centralized users, a shared dictionary, and a team style guide.
The product has an open-source core that can run locally, but that is not the same product as the hosted Premium service. The local server omits cloud-only AI rules and requires technical setup, so privacy-sensitive teams should compare capabilities before choosing it.
Use cases
Who LanguageTool is best for
The strongest fit depends on the job you need the product to complete, not the size of its feature list.
Students and educators
Polish essays and academic drafts, with an educational discount for eligible users.
Editors and content teams
Enforce preferred terminology and consistent style through dictionaries and style guides.
Everyday business writing
Catch errors in email, documents, forms, and web apps without switching to a separate editor.
Privacy-aware developers
Use the documented API or deploy the open-source core locally when its reduced feature set is sufficient.
Capabilities
Core LanguageTool features
Multilingual proofreading
Checks spelling, grammar, punctuation, and style in more than 30 languages and dialects.
Advanced Premium rules
Adds more than 20,000 checks for English, German, French, Spanish, Dutch, Polish, and Portuguese.
Browser extensions
Works in text fields across Chrome, Edge, Firefox, Safari, and Opera.
Office integrations
Supports Google Docs, Microsoft Word, Apple Pages, and LibreOffice alongside desktop editors.
AI paraphrasing
Rewrites sentences to be more formal, fluent, simple, or concise; Basic is limited and Premium is unlimited.
Picky Mode
Surfaces additional style and wording suggestions when a stricter review is helpful.
Personal controls
Includes a personal dictionary, text statistics, and Premium style-guide rules.
Team consistency
Team plans add user management, a shared dictionary, and a shared style guide.
API and open-source core
Developers can use the hosted proofreading API or run the LGPL-licensed core on their own infrastructure.
Process
How the LanguageTool workflow works
Step 1
Choose the right language variant
Select the regional form—such as US or UK English—so spelling and formatting rules match the audience.
Step 2
Draft in your normal app
Install the browser or office integration, or paste the text into LanguageTool's editor.
Step 3
Review by category
Resolve factual spelling and grammar errors before considering optional style and rephrasing suggestions.
Step 4
Add approved terms
Put names, acronyms, and specialized vocabulary into a personal or team dictionary.
Step 5
Apply style rules
Premium and Team users can encode preferred wording so repeated work stays consistent.
Step 6
Complete a human read
Read the final text in context; automated suggestions can be grammatically valid but wrong for meaning, voice, or domain.
Cost
LanguageTool pricing and free plan
LanguageTool lists individual and team prices in euros. Individual Premium offers longer checks, advanced rules, unlimited AI paraphrasing, and a personal style guide; eligible students and educators can receive up to 20% off. Taxes and localized offers may change the checkout total.
Basic
Free
Basic grammar, spelling, punctuation, and style checks with limited text length and AI paraphrasing.
- 2,000 characters per text field on the English comparison page
- Three AI sentence paraphrases per day
- Personal dictionary and text statistics
Premium monthly
€19.90/month
Full individual Premium feature set billed monthly.
- Up to 150,000 characters per text field
- Unlimited AI sentence paraphrasing
- Advanced checks and personal style guide
Premium quarterly
€39.90/quarter
The same Premium features at an effective €13.30 per month.
- Renews every three months
- Can be canceled for the end of the current period
- 14-day money-back guarantee
Premium annual
€59.89/year
The same Premium features at an effective €4.90 per month.
- Annual billing
- Up to 20% educational discount for eligible users
- Auto-renews unless canceled
Premium two-year
€99.90/2 years
The lowest listed individual effective rate at €4.16 per month.
- Billed for two years
- Same individual Premium features
- Auto-renews unless canceled
Teams
€56.90/user/year
Annual plan for teams of up to 20 users.
- All Premium features
- User management
- Team dictionary and style guide
Business
Custom
Business deployment, administration, integration, and higher-scale options.
- Contact LanguageTool
- Hosted and enterprise deployment needs vary
- Separate API pricing may apply
Pricing checked . Check current pricing at the source ↗
Assessment
LanguageTool strengths and limitations
Where it stands out
- Much broader language coverage than English-first writing assistants.
- Works directly in common browsers, office suites, and desktop writing workflows.
- Premium supports very long text fields and a large advanced rule set.
- Personal and team dictionaries reduce false positives on specialized terminology.
- Style guides help repeat writers apply the same language standards.
- The open-source core provides a local deployment path for technical users.
What to consider
- Quality and rule depth vary by language; the largest additional Premium rule set focuses on seven named languages.
- The free plan has short text limits and only three AI paraphrases per day.
- An automated correction can alter meaning or voice, so suggestions still need contextual review.
- The hosted service processes writing in the cloud; sensitive users should read the current privacy policy and avoid unnecessary confidential text.
- Documents written in the LanguageTool Editor are stored so they can be accessed later until the user deletes them, including from the recycle bin.
- The self-hosted open-source server does not include cloud-only AI rules and is not a drop-in replica of Premium.
- Separate individual, Team, Business, and API offerings make total cost less straightforward for organizations.
Compare
LanguageTool alternatives
The right alternative depends on the specific output, workflow, controls and budget your project requires.
Content Creator
QuillBot
Better centered on paraphrasing, summarization, and rewriting alongside grammar checks.
Explore QuillBot →Business Operations
Writer
A stronger fit for enterprises that need governed AI writing, brand rules, and organizational controls.
Explore Writer →Students
Jenni AI
More focused on assisted academic drafting, research workflows, and citations.
Explore Jenni AI →Business Operations
HyperWrite AI Agent
Broader writing and web-productivity assistance rather than rule-based multilingual proofreading.
Explore HyperWrite AI Agent →Questions
LanguageTool FAQs
What does LanguageTool do?
LanguageTool checks spelling, grammar, punctuation, typography, and style. It also offers sentence paraphrasing, dictionaries, style guides, and integrations for browsers and office apps.
Is LanguageTool free?
Yes. The Basic plan provides core checking and three AI sentence paraphrases per day, but has shorter text limits and fewer advanced rules than Premium.
How much is LanguageTool Premium?
As of August 30, 2026, LanguageTool listed €19.90 monthly, €39.90 quarterly, €59.89 annually, or €99.90 for two years. Local taxes and offers may affect checkout.
How many languages does LanguageTool support?
LanguageTool advertises more than 30 languages and dialects. Checking depth varies, with expanded Premium rules specifically highlighted for English, German, French, Spanish, Dutch, Polish, and Portuguese.
Does LanguageTool work in Microsoft Word and Google Docs?
Yes. LanguageTool provides office and browser integrations for Microsoft Word, Google Docs, Apple Pages, LibreOffice, and common web browsers.
Does LanguageTool save my text?
Its privacy policy distinguishes between products. Content sent through apps and extensions is generally not stored as a document, although limited processing records and error context may be retained as described in the policy. Documents in the Editor are stored for cross-device access until fully deleted.
Can I self-host LanguageTool?
Yes, technical users can run the LGPL-licensed open-source server. The official setup guide says that local version does not include cloud-only AI rules, so it should not be treated as equivalent to Premium.
Is LanguageTool accurate enough to replace an editor?
No automated checker reliably understands every factual, rhetorical, or domain-specific choice. LanguageTool is an effective first-pass and consistency tool, but consequential writing still benefits from a human read.
Bottom line
Our LanguageTool verdict
LanguageTool is an excellent choice for multilingual proofreading and for writers who want corrections inside existing browsers and office apps. Premium becomes compelling for long documents and repeat professional use; self-hosting is useful for technical privacy needs but sacrifices cloud-only intelligence.
Visit LanguageTool website ↗%2520(1).jpeg)
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