Is Grammarly still worth adding to Microsoft Word when Word now ships with its own AI-assisted Editor? That is the real question in 2026, and it is a fairer fight than it used to be. Grammarly remains the most popular third-party checker for Word. Still, the product has changed shape: the old Office add-in is being retired, the paid plan is now called Pro instead of Premium, and Grammarly itself now operates under the Superhuman brand after the companies combined.
I run a writing software company, and I have spent my career shipping documents, from software manuals to books, so I hold editing tools to a simple standard: does the tool catch real errors without wrecking your writing voice or your workflow? In this review, I explain how Grammarly connects to Word today, what the Free and Pro tiers include at current prices, how it compares with Word's built-in checking, and where it falls short, so you can decide whether the upgrade is worth it for your writing.
What is Grammarly for Word?
Grammarly for Word runs Grammarly's checking inside Microsoft Word documents, giving you real-time suggestions on correctness, clarity, tone, and delivery as you type, without copying text into another app. Grammarly is a proofreading and writing assistant, and Word is where an enormous share of professional writing happens, so the integration matters more than any other Grammarly surface for many writers.
The important 2026 change is how that integration is delivered. Grammarly is retiring the classic Grammarly for Microsoft Office add-in, which no longer receives feature or security updates. The current, supported route is the Grammarly desktop app for Windows or Mac, which works inside Word (Office 2016 and newer on Windows 10 and 11, plus current Mac versions) along with Outlook, PowerPoint, Teams, and most other places you type. Grammarly confirms the retirement and the recommended replacement in its own support documentation on the Microsoft Office add-in discontinuation.
In practice, you install Grammarly for Windows or Mac once, and a small Grammarly widget appears when you write in Word. Suggestions show up inline as you type, and the desktop app adds the newer capabilities the old add-in never had: generative AI tools to rewrite, improve, and translate text, plagiarism detection on paid plans, and authorship tracking that records whether text was typed, pasted, or AI-generated.
Grammarly's Other Apps
Word is one of several ways to use Grammarly, and it helps to know the full lineup because your subscription covers all of them:
Grammarly for Windows and Mac: the desktop app, and the current way to get Grammarly inside Word, Outlook, and other desktop software.
Grammarly Editor: the online editor at app.grammarly.com where you can draft or paste documents and work through suggestions in one place.
Browser extension: for Chrome, Safari, Edge, and Firefox, checking your writing in web apps such as Gmail, Google Docs, and social media.
Mobile apps and keyboard: iOS and Android apps that check writing on your phone, including in mobile Word documents.
If you write in a browser, the extension may serve you better than the Word integration. But if Word is your primary drafting tool, the desktop app is the piece that earns its keep.
What Grammarly Catches in Word
The core value is the range and quality of what gets flagged while you write. On the free plan, Grammarly corrects grammar, spelling, and punctuation: wrong verb forms, misplaced or missing commas, and misspellings, including current and technical terms that Word's dictionary can lag on. Each suggestion comes with a short, plain-language explanation of the rule involved, which improves your own grammar over time. You can add words to a personal dictionary so your niche vocabulary stops getting flagged.
The paid tier goes further into style and substance. Pro adds full-sentence rewrites for clarity, tone adjustment, fluency suggestions, vocabulary alternatives when you repeat words, and plagiarism detection that compares your text against web sources. It flags passive voice, wordiness, and informal phrasing, with enough context to decide whether the flag deserves action. Grammarly also includes generative AI on both tiers, with a small monthly prompt allowance on Free and a much larger one on Pro, so you can ask it to rewrite a paragraph, adjust tone, or draft from an outline without leaving Word.
One habit I recommend regardless of tier: treat every suggestion as a suggestion. Grammarly is statistical, not human. It is sometimes wrong, and sometimes both its version and yours are correct. Writers who accept every flag end up with flawless but voiceless prose. The tool works best as a second pair of eyes on a draft you still control, a principle that applies to every checker in my roundup of the top writing tools for every writer.
Grammarly Free vs. Pro: Current Pricing
Grammarly sells three tiers in 2026, and the names have changed since this tool first became popular. Premium is now Pro, and the top tier for large organizations is Enterprise.
Grammarly Free costs nothing and covers grammar, spelling, and punctuation checking everywhere Grammarly runs, including Word, plus a limited allowance of generative AI prompts. Grammarly Pro costs 12 dollars per member per month when billed each year, which works out to 144 dollars per year, or 30 dollars per month on month-to-month billing. Pro adds the advanced rewrites, tone and fluency suggestions, plagiarism detection, and a far larger AI allowance. Enterprise pricing is quoted by the sales team. Current details are on Grammarly's plans page, and note that Grammarly bills per member, so team plans multiply by seat count.
For context, that annual Pro price sits in the same range as its main rivals, and the honest comparison depends on what you write. My review of the Grammarly Premium free trial covers the paid tier in more depth, and if you want to weigh alternatives before paying. My ProWritingAid review, on the other hand, covers the strongest direct competitor for long-form writers. All the while, my review of the Hemingway Editor covers the best lightweight option for punchy, readable prose.
Grammarly vs. Word's Built-In Editor
Microsoft has not stood still. Word's built-in Editor now checks spelling, grammar, and some style issues, and Microsoft 365 subscribers get capable AI assistance inside Word itself. For casual writing, the built-in checking is serviceable, which was not true when this article was first written.
Where Grammarly still earns its place is depth and explanation. It flags more style and clarity issues than Word's Editor, explains each suggestion so you understand the rule rather than just accepting a change, and maintains a faster-moving dictionary for new and technical vocabulary. It also gives you performance stats on your writing and applies the same checking across Word, your browser, email, and chat apps, so your quality bar does not depend on which window you are typing in. Word's Editor remains tied to Microsoft's ecosystem and offers far less explanation of why something is flagged.
My practical rule: if you don’t write too often, Word's built-in tools are enough. If writing is part of your job or you are producing a manuscript, the gap in coverage and consistency justifies at least running Grammarly Free alongside Word. Writers comparing full-featured apps beyond checkers should start with my list of the best writing apps to see where an editing assistant fits in a complete toolkit.
Cons of Grammarly for Word
No honest review skips the drawbacks, and Grammarly has some real ones.
The free tier is limited by design. You get correctness checking, but clarity rewrites, tone work, vocabulary, and plagiarism detection all sit behind Pro, and Grammarly reminds you of that. The upgrade prompts inside the product and by email are persistent, and even opting out of marketing email does not stop the in-product nudges. That pestering is my biggest usability complaint.
Multilingual writing is a weak spot. Grammarly checks English, and while the AI tools can now handle suggestions in a handful of more widely spoken languages such as Spanish, French, Italian, German, and Portuguese, drafting in other languages inside Word still gets non-English words flagged as errors unless you add them to your dictionary. This is tedious at any volume.
The transition away from the Office add-in is also a genuine annoyance for anyone on an older setup. If you are running a Windows or Office version older than the desktop app supports, your fallback options are the Grammarly Editor in a browser or the browser extension, neither of which is the seamless in-Word experience.
Of course, we must also tackle the question of price. At 144 dollars per year, Pro is a real cost, and skilled native English speakers who need typo-catching can stay on Free forever. The advanced flags matter most for non-native speakers, high-volume writers, and anyone whose errors carry professional consequences.
Final Thoughts
So is Grammarly for Word worth it? On the free tier, yes, almost without qualification. The installation costs you nothing, the correctness checking beats relying on Word alone, and you can ignore the upsells. Pro is worth it for a professional writer and non-native English speaker. Those producing on a modest volume can stick to the free plan.
Related Resources
Frequently Asked Questions
Here are the answers to the most frequently asked questions about Grammarly for Word.
Is Grammarly for Word free?
Yes. A free Grammarly account works inside Microsoft Word through the Grammarly desktop app for Windows or Mac, covering grammar, spelling, and punctuation plus a small allowance of AI prompts. Advanced features such as clarity rewrites, tone suggestions, and plagiarism detection require the paid Pro plan.
How much does Grammarly Pro cost?
Grammarly Pro costs 12 dollars per member per month when billed per year, totaling 144 dollars per year, or 30 dollars per month on monthly billing. Larger organizations use the Enterprise tier, which is priced through the sales team. Grammarly's plans page always carries the current figures.
What happened to the Grammarly add-in for Microsoft Office?
Grammarly is retiring the classic Grammarly for Microsoft Office add-in, and it no longer receives feature or security updates. The supported replacement is the Grammarly desktop app for Windows or Mac, which works inside Word and other Office apps and adds newer features such as generative AI tools and inline suggestions.
Is Grammarly better than Word's built-in spelling and grammar checker?
Grammarly catches more style, clarity, and vocabulary issues than Word's built-in Editor, explains each suggestion, and stays consistent across every app you write in. Word's checking has improved and is adequate for casual use, but serious or professional writers still get a lot more coverage from Grammarly.
Does Grammarly work in Word on Mac?
Yes. The Grammarly desktop app for Mac brings suggestions into Word for Mac the same way the Windows version does. Mac users can also use the browser extension for web apps and the Grammarly Editor for standalone documents.
Can Grammarly check languages other than English?
Grammarly's proofreading is built for English, including regional variants such as American, British, Canadian, and Australian English. Its generative AI tools can produce suggestions in several other languages, but drafting whole documents in another language will trigger false error flags unless you add recurring words to your personal dictionary.