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Grammarly vs LanguageTool
Offers similar AI grammar checking but focuses mainly on English and fewer language options.
Which to pick
Pick Grammarly if you want…
- AI-enhanced grammar and tone assistance
- English-centric AI writing assistance
Pick LanguageTool if you want…
- Multilingual AI grammar checking
- Open-source code (languagetool-org/languagetool on GitHub, LGPL-2.1 license)
Side by side
- What it is
- Grammarly:Grammarly is an AI-powered writing assistant that checks grammar, suggests tone, rewrites text, and detects AI-generated content.
- LanguageTool:LanguageTool is an AI-powered grammar, spelling and style checker for over 30 languages.
- Best for
- Grammarly:AI-enhanced grammar and tone assistance
- LanguageTool:Multilingual AI grammar checking
- Who it’s for
- Grammarly:Individuals, teams, and enterprises needing better writing and communication.
- LanguageTool:Writers, students, professionals and teams needing multilingual text correction.
- Pricing
- Grammarly:Freemium
- LanguageTool:Freemium
- Plans
- Grammarly:Free $0 per month · Pro $12 per member per month, billed a
- LanguageTool:2-year Premium $119.80/2 years per 2 years · Annual Premium $69.90/year per year · Quarterly Premium $49.90/quarter per quarter · Monthly Premium $24.90 per month
- Open source
- Grammarly:—
- LanguageTool:Yes, 15,112 GitHub stars
- Works with
- Grammarly:—
- LanguageTool:Chrome, Firefox, Edge, Safari, Opera, Google Docs, Microsoft Word, LibreOffice
Grammarly features
- Proofreading. Detects and corrects grammar, spelling, and structural errors in real time.
- Tone Suggestions. Analyzes context to recommend adjustments for the desired tone.
- Paragraph Rewrites. Rewrites sentences with a single click to improve clarity and flow.
- AI Detector. Identifies AI-generated text and highlights areas to revise.
- Humanizer Agent. Adds personality to writing while preserving the author’s voice.
- Generative AI Prompts. Provides up to 2,000 AI writing prompts per member per month on Pro plan.
LanguageTool features
- Grammar & punctuation checking. Detects and corrects grammar, punctuation and agreement errors in real time.
- Style and tone suggestions. Highlights overused words, informal language and offers style improvements.
- AI paraphrasing. Rewrites sentences to be more formal, concise or fluent using AI.
- Personal dictionary & statistics. Save custom words and track writing productivity and error trends.
- Browser extensions & add-ons. Works in Chrome, Firefox, Edge, Safari, Opera and integrates with Google Docs, Word and LibreOffice.
- Desktop & mobile apps. Native editors for Windows, macOS and iOS with offline checking.
Grammarly vs LanguageTool FAQ
Is Grammarly or LanguageTool free?+
Grammarly has a free plan and paid plans. LanguageTool has a free plan; paid plans start at $24.90/month (Monthly Premium).
Is Grammarly or LanguageTool open source?+
LanguageTool is open source (languagetool-org/languagetool on GitHub, LGPL-2.1 license). DevHunt has no public source repository on record for Grammarly.
On DevHunt
Based on each tool's website and DevHunt data. Details may change; check the official sites.