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DeepL vs Grammarly

This comparison was retrieved by database IDs selected from the catalog.

DeepL favicon

DeepL

DeepL SE

Grammarly favicon

Grammarly

Grammarly Inc

Overview
Rating
4.814,000 reviewsTop rated
4.711,000 reviews
Category
Writing
Writing
Subcategory
AI Translation
Grammar and Writing Assistant
Company
DeepL SE
Grammarly Inc
Status
Active
Active
Launch year
2017
2009
Tags
translationmultilinguallanguageneuralmachine-translation
grammarwritingspellingstyletoneai-writing
Pricing
Starting price
$8.74/moBest value
$12/mo
Pricing model
Freemium
Freemium
Free plan
Yes
Yes
Free trial
✕
✕
Pricing notes

Free with 500,000 characters/month (web), 3 document translations. Pro Starter $8.74/month. Advanced $28.74/month. Ultimate $57.49/month. Enterprise custom pricing.

Free with basic checks. Pro $12/month billed annually ($30/month billed monthly). Business $15/member/month with team features and style guides.

Capabilities
Best for
Professional document translationLegal and business translationContent localisationWebsite translationMultilingual communication
Email writingProfessional writingAcademic writingContent creationTeam writing consistency
Target audience
Professional translatorsLegal teamsInternational businessesLocalisation teamsResearchers
StudentsWritersProfessionalsMarketing teamsCustomer serviceNon-native English speakers
AI type
Translation Model
Writing Assistant
Modalities
TextDocument
Text
Technical
Model provider
DeepL
Grammarly
Model names
—
—
API available
✓
✕
Open source
✕
✕
Deployment
SaaSAPI
SaaS
Platforms
WebDesktopiOSAndroid
WebWindowsMaciOSAndroid
Integrations
CAT toolsNotionGoogle DocsSlackAPI
Microsoft WordGoogle DocsChromeFirefoxSafariEdgeSlackGmail
Team collaboration
✕
✓
Trust & security
Security

Pro and Enterprise plans are GDPR-compliant. Enterprise includes data processing agreements. Documents deleted after translation.

Business plan includes SSO and admin controls. Enterprise with data handling agreements.

Privacy notes

Free plan: documents stored temporarily. Pro: deleted immediately after translation. Enterprise: GDPR contractual data handling. DeepL does not use Pro content to train models.

The browser extension reads all text typed in a browser, including potentially sensitive content. Review settings and consider disabling for confidential work.

Verdict
Pros
  • Best-in-class translation quality especially for European languages
  • Document translation preserves formatting
  • Pro plan data not used for model training
  • Strong API for automated multilingual workflows
  • Trusted by professional translators and legal teams
  • Best real-time grammar and style checking available
  • Widest integration support of any AI writing assistant
  • Free plan genuinely useful for everyday writing
  • Tone detection helps with professional communication
Cons
  • Free plan has character limits restricting professional use
  • Coverage weaker for some Asian languages
  • DeepL Write available only in English and German
  • Not suited for real-time conversational translation
  • GrammarlyGO generative features weaker than dedicated AI writing tools
  • Monthly billing expensive at $30 versus $12 annual
  • Browser extension has broad data access
  • Limited value for non-English writing

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