#4 in Grammar & EditingUpdated 2026-08

LanguageTool

by LanguageTool · Grammar, punctuation and style checking in over 30 languages

26.9 — BenchRank score out of 100

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Overview

LanguageTool is an AI-based checker for spelling, grammar, punctuation, style and typography in over 30 languages and dialects. You paste or type text into the web editor, or install add-ons that check text in place in browsers, Gmail, Thunderbird, Word, Google Docs, LibreOffice and macOS or Windows apps. It also rephrases sentences to be more formal, fluent, simple or concise.

Best for: Writers and small teams checking grammar, punctuation and style across 30+ languages
Pricing: Free Basic tier; Premium is £19.90/month or £59.90/year (£4.99/month), and Teams starts at £113.80/year for two users (£56.90 per user), all prices including VAT.
Runs on: iOSmacOSWindowsBrowser extension

Strengths and trade-offs

Strengths

Checks 30+ languages and dialects, including six English variants
Add-ons for Chrome, Edge, Firefox, Safari, Word, Google Docs, Gmail
Free tier covers spelling, grammar and basic punctuation checks
Desktop apps for macOS and Windows; browser add-on stores no text

Trade-offs

Free tier caps text at 2,000 characters against 150,000 on Premium
Paraphrasing limited to 3 sentences per day without Premium
Picky Mode, style guide and team features are Premium-only
Team plan is billed annually only; no monthly option is shown

Pricing

Published plans from LanguageTool’s own pricing page, in GBP. Usage charges and add-ons may apply on top.

LanguageTool pricing tiers, monthly and annual rates in GBP
Plan	Monthly	Annual (per month)	Includes
Basic	—per user	—	2,000 characters per text field 3 A.I. sentence rephrasings per day Limited Picky Mode
Premium	£19.9per user	£4.99	Up to 150,000 characters per text field Unlimited A.I. sentence paraphrasing Style Guide, personal dictionary and full Picky Mode Also sold quarterly at £39.00 or two-yearly at £99.90
For Teams	—per 2-user team	£9.48	All Premium benefits User management Team Style Guide and Team Dictionary £113.80/year for 2 users (£56.90 per user); scales to 1,000 users

How this score is made up

Each dimension is scored out of 100 and combined into the headline score using fixed weights.

MCP support: 0 out of 100
API quality: 0 out of 100
Documentation: 0 out of 100
Agent friendliness: 73 out of 100
Pricing transparency: 100 out of 100
Changelog: 0 out of 100
Marketing site structure: 55 out of 100
Operational trust: 15 out of 100

Measured, but not part of the score

Useful to know, but not a mark for or against the product — so these do not affect the ranking.

Openness: 40 out of 100
Maintenance: 100 out of 100

This doesn’t look right — report a problem with LanguageTool’s score

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