Overview
Grammarly is an AI-powered writing tool that helps over 30 million people write more clearly and effectively. It checks grammar, spelling, punctuation, style, and tone across browsers, apps, and desktop editors, with a generative AI assistant for drafting and rewriting.
Available On
WebWindowsMacosIosAndroidMobile AppDesktop AppExtension
Key Features
Real-time Grammar Checking
Tone Detection & Suggestions
Plagiarism Detection
Grammarly GO AI Writer
Style Guide (Business)
Pros
- Works everywhere via browser extension
- Catches subtle contextual errors other tools miss
- Excellent for non-native English writers
Cons
- Premium is required for most useful features
- Privacy concerns with document processing
- Suggestions can be overly prescriptive
Pricing Plans
FreeFREE
Free
- Grammar & spelling checks
- Tone detection
- Writing suggestions (basic)
PremiumPAID
$30/mo
- Clarity rewrites
- Full sentence rewrites
- Plagiarism detection
- Grammarly GO
BusinessPAID
$15/mo
- Per user pricing
- Team dashboard
- Style guides
- Priority support
User Reviews
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Integrations
Google DocsMicrosoft WordOutlookGmailSlack
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Quick Info
Websitegrammarly.com
CategoryArtificial Intelligence
Team SizeSMB
ReleasedJuly 1, 2009
Last UpdatedJune 10, 2026
Monthly Visits200.0M
API AvailableNo
Open SourceNo
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Build Custom ComparisonAI Capabilities
Grammarly GO: full text generation, rephrase, tone adjustment, and email drafting.
Best For
EducationMarketingHRDevelopmentSales