Grammarly vs DeepL
A direct comparison using the real catalog fields currently available for both products.
Last updated
Grammarly
Grammarly Inc
DeepL
DeepL SE
Free with basic checks. Pro $12/month billed annually ($30/month billed monthly). Business $15/member/month with team features and style guides.
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.
Business plan includes SSO and admin controls. Enterprise with data handling agreements.
Pro and Enterprise plans are GDPR-compliant. Enterprise includes data processing agreements. Documents deleted after translation.
The browser extension reads all text typed in a browser, including potentially sensitive content. Review settings and consider disabling for confidential work.
Free plan: documents stored temporarily. Pro: deleted immediately after translation. Enterprise: GDPR contractual data handling. DeepL does not use Pro content to train models.
- 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
- 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
- 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
- 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
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