Grammarly: AI Writing Assistant for Better Communication
Grammarly is an AI-powered writing assistant helping 40M+ people and 50K+ organizations improve grammar, tone, clarity, and style in real-time across 1M+ apps.
Grammarly is an AI writing assistant software tool that helps users improve their writing across platforms like email, documents, and messaging. Founded in 2009 in Ukraine and now based in San Francisco, it serves 40+ million individual users and 50,000+ organizations globally. The tool offers real-time grammar, spelling, and tone suggestions, plagiarism detection, and AI-powered content generation. Pricing ranges from Free (basic checks) to Pro ($12/month annually with advanced features) to Enterprise (custom pricing). Grammarly integrates with 1M+ apps including Gmail, Microsoft Word, and Slack, and maintains SOC 2, ISO, HIPAA, and GDPR compliance for enterprise security.
Pricing
Free tier includes basic grammar, spelling, punctuation, and 100 AI prompts/month. Pro tier at $12/month (billed annually) or $30/month (monthly) includes full-sentence rewrites, tone adjustment, 2,000 AI prompts, plagiarism detection, and advanced vocabulary suggestions. Enterprise pricing is custom—contact sales. Annual billing provides up to 60% savings.
Frequently Asked Questions
Is Grammarly free?
Yes, Grammarly offers a free tier that includes basic grammar, spelling, and punctuation checks plus 100 monthly AI prompts. The Pro tier ($12/month billed annually) adds full-sentence rewrites, tone detection, plagiarism checking, and 2,000 monthly AI prompts. Enterprise plans have custom pricing.
What platforms does Grammarly work on?
Grammarly works on Windows and Mac desktops, iOS and Android mobile devices, and web browsers (Chrome, Safari, Firefox, Edge). It integrates with 1M+ apps including Gmail, Microsoft Word, Google Docs, Slack, Zendesk, Jira, Salesforce, LinkedIn, and more.
Does Grammarly sell or use my writing data?
No. Grammarly explicitly does not sell, monetize, or allow third-party partners to train their models on user content. The company makes money only when users purchase paid plans. Data is encrypted to enterprise standards and complies with GDPR and HIPAA.
Can Grammarly detect AI-generated content?
Grammarly includes an AI Detector feature that analyzes text to flag potentially AI-generated content with a confidence score. However, users report the tool has accuracy limitations and sometimes misidentifies human writing as AI or vice versa.
Does Grammarly support languages other than English?
Grammarly primarily supports English with variants (American, British, Australian, Canadian). Recent updates added generative AI and translation for French, German, Italian, Portuguese, and Spanish, but core grammar and plagiarism checks remain English-focused.
Can Grammarly work offline?
No. Grammarly requires an active internet connection to function. It is cloud-based and does not offer offline mode, which limits utility for writers without consistent connectivity.
How does Grammarly's plagiarism checker work?
Grammarly's plagiarism detection scans user text against billions of web pages, academic databases, and sources to flag similar content and unoriginal passages. It then suggests proper citations or paraphrasing to help users create original work.