Grammarly Premium vs LanguageTool

Detailed comparison: pricing, features, setup, and which is right for you.

✅ Free Alternative: Free (self-hosted or free tier) 🤖 AI-Analyzed 🖥️ Setup: Easy 📅 April 15, 2026

Paid Tool

Grammarly Premium

$12–$15/month

Visit →

Free Alternative ✅

LanguageTool

Free (self-hosted or free tier)

Visit →

🤖 AI Verdict

✅ Switch to LanguageTool if

LanguageTool's free tier catches grammar, spelling, and style issues in 30+ languages. The self-hosted version removes all limits — unlimited text, full rule set — at zero ongoing cost.

⚠️ Stay with Grammarly Premium if

Grammarly Premium's AI writing suggestions, plagiarism checker, and tone detector are more sophisticated than LanguageTool's style rules, especially for native English business writing.

🖥️ Setup Difficulty: Easy

●○○○○

⏱️ Setup time: ~2 mins (cloud) / ~15 mins (self-hosted) · 🐳 Method: Browser extension / Docker

Grammarly Premium vs LanguageTool

Overview

Grammarly Premium charges $12–$15/month for advanced grammar checking, AI writing suggestions, plagiarism detection, and tone analysis. LanguageTool is an open-source grammar and style checker supporting 30+ languages, available as a free browser extension or as a self-hosted Docker instance with no character limits.

Key Differences

Cost: Grammarly Premium is $12–$15/month; LanguageTool free tier covers most use cases
Languages: LanguageTool supports 30+ languages natively; Grammarly focuses on English
Self-hosting: LanguageTool can run entirely offline via Docker; Grammarly is cloud-only
AI suggestions: Grammarly has GPT-powered rewriting; LanguageTool is rule-based with some ML
Plagiarism: Grammarly includes plagiarism detection; LanguageTool does not

Pricing Comparison

Aspect	Grammarly Premium	LanguageTool
Base pricing	$12–$15/month	Free / self-hosted
Languages	English-focused	30+ languages
Self-hosted	❌	✅ Docker available
Plagiarism check	✅	❌
AI rewriting	✅ GPT-powered	Limited
Browser extension	✅	✅

Migration Path

How to switch from Grammarly Premium to LanguageTool:

Install the LanguageTool browser extension from languagetool.org. For self-hosting: docker run -d -p 8010:8010 silviof/docker-languagetool. Then configure the extension to use your local server at http://localhost:8010.

📦 LanguageTool on GitHub
github.com/languagetool-org/languagetool
Open Source · Free to use

📦 Ready to switch? Step-by-Step Migration Guide → All Grammarly Premium Alternatives →

Data sourced April 15, 2026. Pricing and features change — verify at Grammarly Premium and LanguageTool before making decisions.

🔗 Related Comparisons

← View All Comparisons