Grammarly Review
Quick Verdict
Grammarly is the most polished and accessible AI writing assistant available. It catches errors other tools miss, offers smart rewrites, and works seamlessly across nearly every platform. At $12/month for Premium, it's an excellent value for anyone who writes regularly — from emails to long-form content.
What is Grammarly?
Grammarly is an AI-powered writing assistant that checks grammar, spelling, punctuation, clarity, and tone in real time. Available as a browser extension, desktop app, mobile keyboard, and integrations with Google Docs, Microsoft Office, and more, it's designed to improve your writing wherever you write.
Beyond basic grammar checking, Grammarly Premium offers AI-powered rewriting suggestions, tone detection, plagiarism checking, and brand tone features for teams. The recent addition of generative AI features puts it in direct competition with tools like ChatGPT for content creation.
Our Testing Process
We used Grammarly Premium daily for 4 weeks across a variety of writing tasks:
- Professional emails and Slack messages
- Blog posts and marketing copy
- Academic and technical documentation
- Social media posts and ad copy
- Personal writing and creative projects
- Google Docs collaboration with team members
Grammar & Error Detection
This is Grammarly's bread and butter, and it excels at it. In our testing, Grammarly consistently caught errors that other tools missed — including subtle subject-verb agreement issues, misplaced modifiers, and contextually incorrect word usage.
"Grammarly doesn't just underline errors — it explains why something is wrong and offers multiple correction options. This makes you a better writer over time, not just a cleaner one."
The free tier handles basic grammar and spelling well, but Premium unlocks advanced suggestions for clarity, conciseness, and delivery that are genuinely useful for professional writing.
AI Writing & Rewriting
Grammarly's generative AI features let you generate drafts, rewrite sentences, change tone, and summarize text directly within the editor. We found the AI suggestions to be contextually aware and generally high quality, though not quite at the level of dedicated AI writing tools like Claude or ChatGPT for long-form generation.
Where Grammarly's AI shines is in its rewriting suggestions. Highlight a clunky sentence, and Grammarly will offer 2-3 cleaner alternatives that maintain your meaning while improving readability. This inline AI assistance feels more natural than switching to a separate AI tool.
Platform Integration
Grammarly works almost everywhere. The browser extension integrates with Gmail, Google Docs, Twitter, LinkedIn, Slack, and hundreds of other web apps. The desktop app provides a clean writing environment, and the mobile keyboard ensures your writing is polished on the go.
The Google Docs integration is particularly strong — Grammarly suggestions appear inline without disrupting your workflow. Microsoft Office integration works well on both Mac and Windows, though it can occasionally feel slightly slower than the browser extension.
Pricing
Grammarly offers three tiers:
- Free: Basic grammar, spelling, and punctuation checking
- Premium ($12/month): Advanced suggestions, tone detection, plagiarism checker, full-sentence rewrites
- Business ($15/user/month): Team features, brand tones, style guides, analytics dashboard
The Premium plan is the sweet spot for most users. At $12/month (or $144/year), it's competitively priced against alternatives like ProWritingAid and offers more seamless integration than most competitors.
Detailed Scoring
Pros
- Works everywhere — browser, desktop, mobile, Office
- Excellent grammar and error detection accuracy
- AI-powered rewriting and tone adjustment
- Generous free tier for basic writing needs
- Plagiarism checker included in Premium
- Explains errors to help you learn
Cons
- AI generation features lag behind dedicated AI tools
- Can be overly aggressive with suggestions on creative writing
- Requires internet connection for most features
- Occasional false positives on unconventional phrasing
- No lifetime license option
Who Should Use Grammarly?
Best For
- Professionals who write emails and reports daily
- Content marketers and bloggers
- Non-native English speakers
- Students and academics
- Anyone who wants to improve their writing skills
Not Ideal For
- Fiction writers who need deep style analysis (try ProWritingAid)
- Users who need offline-only writing tools
- Those who find real-time suggestions distracting
- Writers who primarily need AI content generation (try ChatGPT)
Final Verdict
Grammarly remains the gold standard for everyday writing assistance in 2026. Its unmatched platform integration, reliable grammar checking, and improving AI features make it an essential tool for anyone who writes professionally. While it won't replace dedicated AI writing tools for long-form generation, nothing beats Grammarly for catching errors and polishing your writing in real time.