Grammarly vs DeepL Write: Best AI Writing Assistant? [2026 Comparison]
A thorough comparison of Grammarly and DeepL Write covering proofreading accuracy, writing improvement, pricing, and multilingual support. Find the best AI tool for enhancing your English writing.
Verdict:Grammarly and DeepL Write excel at different aspects of English writing improvement. Grammarly has established itself as the industry standard for comprehensive English proofreading, from grammar and spelling to tone detection and plagiarism checking. DeepL Write has powerful full-text rephrasing capabilities, ideal for polishing translated text to native-level quality. For everyday English proofreading, use Grammarly; for improving the naturalness of translated text, combine it with DeepL Write.
Table of Contents
Grammarly & DeepL Write Overview
Grammarly
The world's largest AI writing assistant. Goes beyond grammar, spelling, and punctuation correction to offer tone detection, plagiarism checking, and AI writing support.
Learn more about Grammarly →DeepL Write
An AI writing improvement tool by DeepL. Leverages language understanding from translation technology to improve clarity, fluency, and style. Supports English and German.
Learn more about DeepL Write →Feature & Pricing Comparison
| Feature | Grammarly | DeepL Write |
|---|---|---|
| Pricing | Free / Premium $12/mo / Business $15/mo | Free (included with DeepL Pro from $8.74/mo) |
| Grammar Check | Very high precision (industry standard) | Basic grammar check |
| Writing Improvement | Rewrite suggestions, tone adjustment | Full sentence rephrasing (powerful) |
| Supported Languages | English-focused (limited others) | English and German |
| Tone Detection | Supported (formality visualization) | Style selection feature |
| Plagiarism Check | Premium and above | Not supported |
| Browser Extension | Chrome, Edge, Safari, etc. | Chrome extension available |
| Word Integration | Microsoft Word add-in | Not supported |
| AI Writing Generation | GrammarlyGO (AI writing assist) | Rephrasing-focused |
Our Verdict
Our Verdict
Grammarly and DeepL Write excel at different aspects of English writing improvement. Grammarly has established itself as the industry standard for comprehensive English proofreading, from grammar and spelling to tone detection and plagiarism checking. DeepL Write has powerful full-text rephrasing capabilities, ideal for polishing translated text to native-level quality. For everyday English proofreading, use Grammarly; for improving the naturalness of translated text, combine it with DeepL Write.
Recommendations by Use Case
Daily email and document proofreading
Comprehensive grammar, spelling, and punctuation checks with browser extension for use anywhere
Polishing translated English text
Works with DeepL translation to rephrase translated text into natural native English
Academic papers and official documents
Plagiarism checking, tone detection, and formal style adjustment for academic use
German writing improvement
Supports German in addition to English for quality improvement of German text
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