What is Grammarly?
Grammarly is the most widely used AI writing assistant, checking grammar, spelling, punctuation, clarity, and tone in real time across every surface you write on — Google Docs, Gmail, Outlook, Slack, LinkedIn, and your browser. Its Premium and Business tiers add style suggestions, vocabulary enhancements, plagiarism detection, and full-sentence rewrites, making it a complete writing improvement platform rather than just a spell checker.
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Key Features
Here's what makes Grammarly stand out:
- Real — time Grammar Checking
- Clarity Improvements — Identifies wordy, confusing, or vague sentences and suggests concise alternatives.
- Tone Detector — Analyzes the emotional tone of your writing
- GrammarlyGO — AI
- Plagiarism Checker — Compares your text against 16 billion web pages and academic papers to detect unintentional copying (Premium).
Pros & Cons
✅ Pros
- Works in 500K+ apps — especially for real-time grammar checking workflows where Grammarly consistently outperforms manual approaches
- Extremely reliable — especially for real-time grammar checking workflows where Grammarly consistently outperforms manual approaches
- Business-appropriate tone control — especially for real-time grammar checking workflows where Grammarly consistently outperforms manual approaches
- Plagiarism checker on Premium — especially for real-time grammar checking workflows where Grammarly consistently outperforms manual approaches
❌ Cons
- Premium required for best features — worth evaluating before committing if this is central to your use case
- Can over-correct natural voice — worth evaluating before committing if this is central to your use case
- Doesn't generate long-form well — worth evaluating before committing if this is central to your use case
- Privacy concerns with data — worth evaluating before committing if this is central to your use case
Our Rating
Who Should Use Grammarly?
Best for: Anyone who writes professionally and wants consistent, error-free output across all their tools — marketers, content writers, business professionals, students, and non-native English speakers who need a reliable writing safety net.
- Catching grammar, spelling, and punctuation errors in real time as you type
- Improving sentence clarity and conciseness with one-click suggestions
- Adjusting tone — making emails more formal, friendlier, or more confident
- Checking documents for plagiarism before submission or publication
- Rewriting entire sentences and paragraphs for better flow with GrammarlyGO
Grammarly Pricing
| Plan | Price | What's included |
|---|---|---|
| Free | $0 | Grammar, spelling, punctuation checks, tone detection, 100 GrammarlyGO prompts/mo |
| Premium | $12/mo | Full clarity & style suggestions, vocabulary enhancements, plagiarism checker, unlimited GrammarlyGO |
| Business | $15/user/mo | Team style guides, brand tone settings, analytics dashboard, admin controls, priority support |
Best Grammarly Alternatives
Depending on your use case, these alternatives may serve you better:
Final Verdict
Grammarly is the most reliable writing assistant for catching errors and improving clarity — it works everywhere you write without context switching, which is its key advantage over standalone tools. The free tier catches most basic errors effectively. Premium at $12/mo adds style and tone improvements worth having for anyone writing client-facing content. The main limitation: it sometimes over-corrects natural voice, flagging intentional stylistic choices. Use suggestions as prompts, not rules.