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Grammarly

AI Writing & Content

AI writing assistant for clear, effective communication

Founded 2009San Francisco, CA, USA1,000+ employeesfreemium · Free planFrom Free; $12/member/month (Pro, billed annually)
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About Grammarly

Grammarly is an AI-powered writing assistant that helps millions of people write with clarity, confidence, and correctness across email, documents, and web applications.

Editorial Assessment

Grammarly is an AI writing assistant embedded across the surfaces where people write — browser extension covering 500,000+ apps and websites, native macOS and Windows apps, and integrations with Google Docs, Microsoft Word, and Outlook. Its free tier checks grammar and spelling and includes 100 AI writing prompts per month. The Pro plan ($12/member/month annual) adds full-sentence rewrites, tone adjustment, plagiarism detection, and 2,000 AI prompts. For teams, Grammarly Pro includes brand tone settings, style guides, and snippet libraries that enforce organizational writing standards. The platform is primarily English-language-focused — other languages exist but the depth of suggestions is significantly lower. Enterprise pricing requires contacting sales. Grammarly's core advantage over general LLM interfaces for writing is that suggestions appear inline as you write in any application, without requiring users to copy text into a separate tool.

Strengths
  • Browser extension covers 500,000+ apps — corrections appear inline wherever users write
  • Real-time grammar, clarity, and tone suggestions without leaving the writing context
  • Brand tone and style guide enforcement for team-wide writing consistency (Pro+)
  • Plagiarism detection against academic and web sources
  • Available on Windows, macOS, iOS, Android, Word, Outlook, and Google Docs
  • Free tier catches grammar and spelling errors without time limit
Limitations
  • Primarily English — multilingual support exists but suggestions are significantly less comprehensive
  • Generative AI features (rewrites, prompts) require Pro plan
  • Enterprise pricing is sales-led — no published enterprise pricing
  • Style guide and brand tone require team plan
  • Browser extension can cause performance issues in older browsers or machines

Best For

Non-native English speakers writing in professional settings Content and marketing teams standardizing brand voice across channels Students and academics needing grammar checks and plagiarism detection Enterprise workforces needing consistent writing quality at scale

Not Ideal For

Teams writing primarily in languages other than EnglishDevelopers needing API-based writing assistance integrationOrganizations requiring on-premise data processing for compliance

Key Features

Real-time grammar, spelling, and clarity suggestionsTone detection and adjustmentFull-sentence rewrites (Pro+)Plagiarism detection (Pro+)Brand tone and style guide (Pro+)Generative AI writing prompts (100/month free; 2,000/month Pro)Browser extension for 500,000+ appsNative apps for Windows and macOSWord, Outlook, and Google Docs integrations

Who It's For

Individual professionals and knowledge workersNon-native English speakers in business settingsContent and marketing teamsEnterprise HR and communications teams

Integrations

Google DocsMicrosoft WordGmailSlackChromeOutlook

Platforms

web windows mac ios android chrome-extension word outlook

Founders

  • Max Lytvyn
  • Alex Shevchenko
  • Dmytro Lider

Products & Tools

GrammarlyWriting Assistance
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AI writing assistant for individuals with grammar correction, clarity suggestions, tone analysis, and generative AI writing support embedded across browsers and apps.

freemium · Free planFrom Free; $12/member/month (Pro annual)
Grammar correctionTone analysisSentence rewritesAI promptsPlagiarism detection
Grammarly BusinessBusiness Writing / Team Collaboration
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Team writing assistant with brand tone settings, style guides, snippet libraries, and usage analytics for organizational writing standardization.

subscriptionFrom Contact sales
Brand tone enforcementStyle guidesSnippetsTeam analyticsSSO

Sources & Verification

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Tags

Writing AssistantGrammarAIProductivity

Category

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AI Writing & Content

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Official Website

grammarly.com

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