Grammerly logo - Writing AI tool

Grammerly

AI ToolFreemium

AI-powered writing assistant providing real-time grammar checking, sentence rewriter, tone detection, and plagiarism detection across all your apps and devices.

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Grammerly screenshot - Writing interface and features overview

Key Features & Benefits

  • Grammerly is a writing solution designed for professional environments
  • Suitable for businesses looking to integrate AI capabilities
  • Pricing model: Freemium - making it accessible for both personal and professional use
  • Part of our curated Writing directory with 7+ specialized features

About Grammerly

Grammarly is a comprehensive AI-powered writing assistant that transforms how individuals, teams, and enterprises communicate. By integrating seamlessly into daily workflows across browsers, desktop applications, mobile devices, and popular platforms like Google Docs, Microsoft Word, Slack, and email clients, Grammarly provides real-time writing feedback that goes far beyond basic spell-checking. The platform leverages advanced natural language processing and generative AI to offer context-aware suggestions for grammar, punctuation, clarity, engagement, and delivery, ensuring every piece of writing achieves its intended impact while maintaining professional standards.

At its core, Grammarly serves as an intelligent writing companion that adapts to your unique voice and organizational needs. The platform offers full-sentence rewrites through its advanced sentence rewriter, tone adjustments to match your audience, plagiarism detection to ensure originality, and brand consistency features that enforce custom style guides across teams. With generative AI capabilities, users can draft content from scratch, expand ideas, or condense lengthy text while maintaining their authentic voice. The tool's ability to detect passive sentences, identify sentence fragments, and suggest parallel structure improvements makes it invaluable for anyone seeking to elevate their writing quality, from students crafting academic papers to professionals managing critical business communications.

Grammarly's enterprise-grade features distinguish it as more than just a grammar checker. Teams benefit from shared knowledge bases, custom snippets for frequently used content, brand tone profiles, and comprehensive analytics that track writing performance across organizations. The platform prioritizes security with confidential mode, data loss prevention, and granular permission controls, making it suitable for industries with strict compliance requirements. Whether you're correcting grammar for a single sentence, rewriting entire paragraphs for clarity, or ensuring thousands of team members communicate on-brand, Grammarly provides the AI-powered infrastructure to support writing excellence at any scale while integrating invisibly into existing workflows.

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Key Features

Real-time grammar and punctuation checker across all applications

AI-powered sentence rewriter for full-sentence improvements

Tone detection and adjustment for audience-appropriate communication

Plagiarism detection scanning billions of web pages

Generative AI for drafting and expanding content with 2000+ monthly prompts

Custom style guides and brand tone enforcement for teams

Passive sentence and sentence fragment identification

Parallel structure suggestions for improved readability

Cross-platform integration including browsers and mobile devices

Team analytics and performance tracking dashboards

Knowledge sharing and snippet libraries for collaboration

Enterprise security with data loss prevention and confidential mode

Pricing Plans

Free

$0/month

  • Basic grammar and spelling checks
  • Tone detection

Pro

$30/month or $12/month billed annually ($144/year)

  • Everything in Free
  • Full-sentence rewrites
  • Plagiarism detection
  • Tone adjustments
  • Brand consistency
  • 2,000 AI prompts per month

Enterprise

Custom pricing - contact sales

  • Everything in Pro
  • Unlimited members
  • Dedicated support
  • Confidential mode
  • Granular roles and permissions
  • Data loss prevention
  • Unlimited generative AI prompts

Pricing information last updated: January 18, 2026

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FAQs

How does Grammarly's sentence rewriter work?

Grammarly's sentence rewriter uses advanced AI to analyze your text and suggest full-sentence improvements that enhance clarity, conciseness, and engagement. Available in Pro and Enterprise plans, the feature provides multiple rewrite options that maintain your original meaning while improving readability. The AI considers context, tone, and your writing goals to generate suggestions that sound natural and professional. Pro users receive 2000 AI prompts monthly for rewriting, while Enterprise users enjoy unlimited access to this generative AI capability.

What is the difference between Grammarly Free and Pro?

Grammarly Free provides basic grammar and spelling checks with tone detection, suitable for everyday writing needs. Grammarly Pro, priced at $12 per month when billed annually, adds full-sentence rewrites, plagiarism detection, advanced tone adjustments, brand consistency features, and 2000 monthly AI prompts for generative writing assistance. Pro is ideal for professionals, students, and teams requiring comprehensive writing support beyond basic corrections, including the ability to detect passive sentences and ensure parallel structure in complex documents.

Can Grammarly detect sentence fragments and parallel structure issues?

Yes, Grammarly actively identifies sentence fragments and parallel structure problems in your writing. The tool highlights incomplete sentences that lack a subject or verb, providing suggestions to complete them properly. For parallel structure, Grammarly detects inconsistencies in lists, comparisons, and series, recommending corrections that improve readability and grammatical accuracy. These features are available across all plan tiers and work in real-time as you write, helping you maintain professional writing standards whether drafting emails, reports, or academic papers.

Does Grammarly work across all my devices and applications?

Grammarly integrates seamlessly across browsers, desktop applications, mobile devices, and popular platforms including Google Docs, Microsoft Word, Outlook, Gmail, Slack, LinkedIn, and over 500000 websites and apps. The browser extension works with Chrome, Safari, Firefox, and Edge, while native desktop apps support Windows and Mac. Mobile apps for iOS and Android provide on-the-go writing assistance. This cross-platform functionality ensures consistent grammar checking and sentence rewriting capabilities regardless of where you write, with all suggestions syncing across devices.

Is Grammarly suitable for team and enterprise use?

Grammarly offers robust team and enterprise solutions with Pro plans supporting up to 149 seats and Enterprise plans accommodating unlimited members. Team features include custom style guides, brand tone profiles, shared knowledge bases, snippet libraries, and comprehensive analytics tracking writing performance across organizations. Enterprise plans add dedicated support, confidential mode for sensitive content, granular permissions, data loss prevention, and unlimited AI prompts. These capabilities make Grammarly ideal for businesses requiring consistent, on-brand communication with enterprise-grade security and compliance features.

How accurate is Grammarly's plagiarism detection?

Grammarly's plagiarism detection, available in Pro and Enterprise plans, scans your text against billions of web pages and academic databases to identify potential matches. The feature provides detailed reports showing similarity percentages and highlighting specific passages that may require citation or revision. While highly accurate for detecting common plagiarism, it works best as part of a comprehensive originality review process. The tool is particularly valuable for students, academics, and content creators who need to ensure their work maintains proper attribution and originality standards before publication or submission.