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Free

Free/Paid

FreeFree tier
Inputs: textOutputs: text
Starting Price
$12/mo
Type
Open Source
Company
Grammarly

About URL

Grammarly is a comprehensive AI writing assistant that helps individuals and teams improve their writing across various platforms. It offers real-time proofreading for grammar, punctuation, and clarity, along with tone suggestions to adapt messages for different contexts. Additional features include paragraph rewrites for better flow, a humanizer agent to add personality, and an AI detector to spot AI-generated text. Trusted by over 50,000 organizations and 40 million people, Grammarly provides a free tier with basic capabilities and premium plans (Pro and Enterprise) that unlock advanced features like full sentence rewrites, brand consistency, and higher AI prompt limits. The platform emphasizes responsible AI usage, with a commitment not to sell or monetize user content.

Key Features

Proofreading for grammar, structure, and clarity
Tone suggestions to adapt messages for context
Paragraph rewrites to improve clarity and flow
Humanizer agent to add personality to writing
AI Detector agent to identify AI-generated text
Full sentence rewrites (Pro and Enterprise)
Brand style guide enforcement (Pro and Enterprise)
Generative AI prompts: 100/month free, 2,000/month Pro, unlimited Enterprise
Confidential mode and data loss prevention (Enterprise)
Granular roles and permissions (Enterprise)

Pros & Cons

Pros
  • Free tier available with essential writing assistance
  • Improves clarity, tone, and grammar in real-time
  • Maintains user's authentic voice while suggesting improvements
  • Strong security and privacy policies (does not sell user content)
  • Widely trusted by large organizations (50,000+)
  • Integrates with many popular apps and browsers
  • Responsible AI approach with user data protection
Cons
  • Free plan limited to 100 AI prompts per month
  • Advanced features like full sentence rewrites require paid subscription
  • Not open source
  • Some features may require consistent internet connection
  • Over-reliance on suggestions can reduce independent editing skills

Best For

Professional email and business communicationContent creation and copywritingTeam collaboration with consistent brand voiceEnterprise productivity and workflow optimizationAcademic writing and proofreadingCustomer support responsesPersonal writing improvement

FAQ

Is Grammarly free?
Yes, Grammarly offers a free Forever plan that provides basic writing assistance, including proofreading, tone detection, and 100 AI prompts per month. Premium features are available with Pro ($12/member/month billed annually) or Enterprise plans.
How does Grammarly protect my data?
Grammarly does not sell or monetize user content, nor does it provide content for advertising purposes. Third-party service providers are not allowed to train their models on user content. Enterprise plans offer additional protections like Confidential mode and data loss prevention.
What platforms does Grammarly work on?
Grammarly works as a browser extension, desktop app, and mobile keyboard. It integrates with platforms like Gmail, Google Docs, Slack, Zendesk, and many other applications.
What is the difference between Free and Pro plans?
The Free plan includes basic proofreading, tone detection, and 100 AI prompts per month. The Pro plan ($12/member/month billed annually) adds full sentence rewrites, tone adjustments, brand style enforcement, and 2,000 AI prompts per month. Enterprise offers unlimited prompts, dedicated support, and advanced admin controls.