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Head-to-head · AI Writing Assistants

LanguageTool vs DeepL Write

  • Updated Oct 2026
  • Both researched from official sources
  • 4 checks side by side
Higher score LanguageTool #2 in AI Writing Assistants 9.1/10 Free plan Free plan✓ 3 of 4 features Visit LanguageTool
DeepL Write #3 in AI Writing Assistants 8.9/10 Free plan Free plan✓ 3 of 4 features Visit DeepL Write

LanguageTool leads on 0 checks, DeepL Write on 0, and 4 are even. Who comes out ahead on the 4 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreLanguageTool · 9.1/10
  • Free planboth

LanguageTool scores higher on our rubric for ai writing assistants: 9.1 against 8.9 out of 10; our editors rank them #2 and #3.

LanguageTool is the better fit for multilingual, budget-conscious writers. DeepL Write is the better fit for writers needing polished multilingual phrasing.

  • LanguageTool fits best

    Multilingual, budget-conscious writers

  • DeepL Write fits best

    Writers needing polished multilingual phrasing

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Side by side

Feature LanguageTool 9.1/10 Visit ↗ DeepL Write 8.9/10 Visit ↗
At a glance
Editor score 9.1 8.9
Ranking #2 in AI Writing Assistants #3 in AI Writing Assistants
Best for Multilingual, budget-conscious writers Writers needing polished multilingual phrasing
Pricing model Free plan + paid Free plan + paid
Starting price — —
Free plan ✓ ✓
Free trial — —
Deployment Cloud, Self-hosted, Desktop, Mobile, Browser extension Cloud, Desktop, Mobile, Browser extension
Platforms Web, Windows, macOS, iOS, Chrome extension Web, Windows, macOS, iOS, Android, Chrome extension
Support Email, Live chat, Docs Live chat, Docs
Compliance GDPR SOC 2, ISO 27001, GDPR, SSO/SAML
Integrations 11 integrations 5 integrations
Built for Solo, Small business, Mid-market, Enterprise Solo, Small business, Mid-market, Enterprise
Features LanguageTool 3/4 · DeepL Write 3/4
Brand voice controls Not checked yet Not checked yet
Browser extension ✓ ✓
Desktop app ✓ ✓
Mobile app ✓ ✓
Specs
Included word limit Not checked yet Not checked yet
Supported languages Not checked yet 11 languages
Our review
Pros
  • Supports grammar, style, and paraphrasing across 31 languages
  • Works across web, desktop, mobile, browsers, office apps, and APIs
  • Offers a free plan, personal controls, and self-hosting options
  • Corrects grammar, spelling, punctuation, phrasing, and word choice
  • Offers tone, formality, shortening, and custom-term controls
  • Works across web, desktop, mobile, extensions, apps, and API
Cons
  • Team pricing is limited to up to 20 users
  • Advanced features require a paid Premium plan
  • Its focus is writing improvement rather than broader content creation
  • Language coverage is limited to 11 listed language varieties
  • The free version includes usage limits
  • Unlimited text improvement and enhanced data protection require Write Pro
Our verdict

LanguageTool is a multilingual writing assistant for individuals, professionals, teams, and developers. It checks grammar, spelling, punctuation, and style across a web editor, browser add-ons, Windows and macOS applications, iOS, office…

Read the review →

DeepL Write is an AI writing assistant for individuals and teams who want help improving grammar, spelling, punctuation, clarity, word choice, and phrasing. It suits writers working across multiple language varieties, with controls for…

Read the review →
  1. LanguageToolAI Writing Assistants 9.1Free plan
  2. DeepL WriteAI Writing Assistants 8.9Free plan

Strengths and trade-offs

  • LanguageTool — where it wins

    • Supports grammar, style, and paraphrasing across 31 languages
    • Works across web, desktop, mobile, browsers, office apps, and APIs
    • Offers a free plan, personal controls, and self-hosting options

    Where it doesn't

    • Team pricing is limited to up to 20 users
    • Advanced features require a paid Premium plan
    • Its focus is writing improvement rather than broader content creation

  • DeepL Write — where it wins

    • Corrects grammar, spelling, punctuation, phrasing, and word choice
    • Offers tone, formality, shortening, and custom-term controls
    • Works across web, desktop, mobile, extensions, apps, and API

    Where it doesn't

    • Language coverage is limited to 11 listed language varieties
    • The free version includes usage limits
    • Unlimited text improvement and enhanced data protection require Write Pro

More comparisons

All AI writing assistants comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update