The verdict
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Grammarly Review 2026: More Than a Grammar Checker Now
Grammarly has grown from a simple grammar checker into a full AI writing assistant, adding generative AI features, tone detection, plagiarism checking, and a knowledge base integration that makes it one of the most comprehensive writing tools available. With over 30 million daily active users, it remains the dominant browser-based writing assistant.
What Is Grammarly?
Grammarly is an AI writing assistant that works as a browser extension, desktop app, and integrations with Microsoft Word, Google Docs, and over 500,000 other apps. It checks grammar and spelling, suggests stylistic improvements, detects tone, and now generates full drafts, rewrites, and responses on demand.
Key Features in 2026
Grammar and style checking remains the foundation — catching errors that spell-check misses including subject-verb agreement, comma usage, and awkward phrasing. Tone detector shows how your writing comes across (confident, formal, friendly) in real time. Grammarly Go (generative AI features) can draft emails, rewrite paragraphs, adjust formality, and generate content from prompts. Plagiarism checker (Premium only) scans against 16 billion web pages. Knowledge base integration in the Business plan learns your company terminology and style guidelines.
Pricing
Grammarly Free covers basic grammar and spelling. Grammarly Premium costs $12/month (annual) and adds advanced suggestions and plagiarism checking. Grammarly Business starts at $15/member/month with team management features.
What Grammarly Does Well
Grammarly’s browser extension is genuinely invisible and helpful — it improves every email, document, and social post you write without requiring you to change your workflow. No other tool offers this level of passive, always-on writing improvement.
Limitations
Grammarly’s generative AI features (Grammarly Go) are not as capable as ChatGPT or Claude for complex writing tasks. It sometimes suggests changes that make writing more generic. The free tier is increasingly limited.
Who Should Use Grammarly?
Anyone who writes professionally in English should have Grammarly installed. It is particularly valuable for non-native English speakers and anyone writing in formal contexts like business emails or academic work.
Verdict: 8.5/10 — The best passive writing assistant available. Grammarly Premium pays for itself in time saved and errors caught.