Last updated: 2026-07-10
Grammarly is an AI writing assistant available free or from $12/month (Pro), with over 30 million daily active users across Gmail, Google Docs, and 500,000 apps. The 2026 overhaul adds Smart Drafts for full content generation from prompts and a Tone Rewriter for instant style changes. Multilingual paragraph rewriting now supports Spanish, French, Portuguese, German, and Italian.
About Grammarly
Grammarly is an AI-powered writing assistant that helps millions of users improve their writing across emails, documents, social media, and messaging platforms. Founded in 2009 in Ukraine, Grammarly has evolved from a basic grammar checker into a comprehensive communication platform powered by machine learning and generative AI. The tool provides real-time suggestions for grammar, spelling, punctuation, tone, clarity, and style while protecting user privacy without selling or monetizing content. With integrations across over 1 million apps and websites—including Gmail, Microsoft Word, Slack, Google Docs, and Zendesk—Grammarly works seamlessly wherever users write. The platform offers free and paid tiers (Free, Pro, and Enterprise) designed for individuals, teams, and large organizations seeking consistent, professional communication at scale.
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.
Key Features
- Real-Time Grammar & Spelling Checks: Instantly catches and corrects grammar, spelling, and punctuation errors as you type across all platforms
- Tone Detection & Adjustment: Analyzes writing tone and suggests adjustments to strike the right register for your audience (formal, casual, confident, etc.)
- Generative AI Assistance: Generate text, rewrite sentences, create outlines, draft content from scratch with 100-2000+ monthly AI prompts depending on tier
- Plagiarism Detection: Scans content against billions of web pages and academic sources to flag plagiarism and ensure originality
- Brand Voice & Style Guides: Customize style rules, upload company style guides, and apply consistent brand tone across team communications
- Smart Drafts and Tone Rewriter: 2026 Smart Drafts generate full content from short prompts with built-in grammar and clarity checks; Tone Rewriter instantly pivots writing between confident, diplomatic, or enthusiastic styles without changing core content.
Pros
- Ubiquitous integration across 1M+ apps and websites eliminates need to switch platforms
- Real-time feedback helps catch errors instantly and improves writing quality with minimal friction
- Free tier provides solid foundational grammar and spelling checks with no hidden costs
- Enterprise-grade security with SOC 2, ISO 27001/27017/27018 certifications and GDPR compliance protects user data
- Generative AI features enable content generation, rewriting, and tone adjustment without external tools
Cons
- No offline mode—requires internet connection for all features to function
- Suggestions are not always contextually accurate; AI can misfire on nuance-dependent writing and creative prose
- Large feature gap between Free and Pro tiers may frustrate users; aggressive upsell messaging
- Limited support for languages beyond English despite multilingual expansion claims
- Plagiarism and AI detection tools suffer from accuracy issues that can mislead students and professionals
Frequently Asked Questions
What is Grammarly?
Grammarly is an AI-powered writing assistant founded in 2009 in Ukraine that provides real-time suggestions for grammar, spelling, punctuation, tone, clarity, and style. It integrates across 1 million+ apps and websites including Gmail, Microsoft Word, Slack, Google Docs, and Zendesk.
How much does Grammarly cost?
Grammarly offers a free tier covering basic grammar and spelling checks. Grammarly Pro adds advanced tone, clarity, and style suggestions for individuals, while Grammarly Enterprise (formerly Superhuman after the 2025 rebrand) provides team-wide deployment with admin controls and pricing via custom quote.
What are the main features of Grammarly?
Key features include real-time grammar, spelling, and punctuation correction, tone and clarity suggestions powered by generative AI, integration across 1 million+ apps and websites, and privacy-focused design that does not sell or monetize user content.
Is Grammarly free to use?
Yes, Grammarly's free tier covers core grammar, spelling, and punctuation checking across supported apps and websites. Advanced tone, clarity, and style features require Grammarly Pro or Enterprise.
Who is Grammarly best for?
Grammarly is best for professionals, students, and teams who write across many different platforms (email, Slack, Word, Docs) and want consistent grammar and tone checking everywhere they type. Users needing deep paraphrasing or AI detection features specifically may prefer QuillBot.
How does Grammarly compare to QuillBot?
Grammarly focuses primarily on grammar, spelling, tone, and clarity correction across 1 million+ integrated apps, while QuillBot focuses on paraphrasing with 10+ rewriting modes plus a separate grammar checker — Grammarly is broader for everyday writing correction, QuillBot is stronger for rewriting and academic paraphrasing.
Does Grammarly protect user privacy?
Yes, Grammarly states it does not sell or monetize user content, positioning privacy protection as a core differentiator while still providing AI-powered suggestions across integrated apps.
Is Grammarly suitable for teams and enterprises?
Yes, Grammarly Enterprise (rebranded from Superhuman in 2025) offers team-wide deployment, centralized billing, and admin controls for large organizations seeking consistent communication standards.