Grammarly

AI writing assistant by Grammarly — grammar checking, tone improvement, and clarity enhancement with Grammarly.

🤖 Writing & Content
4.7 Rating
🏢 Grammarly

📋 About Grammarly

Grammarly is an AI-powered writing assistant developed by the company Grammarly, Inc., co-founded by Max Lytvyn, Alex Shevchenko, and Dmytro Lider and officially launched in 2009. Originally built as a grammar-checking tool for academic institutions, it has since evolved into a comprehensive communication platform used by millions of writers, professionals, and students worldwide. Over more than a decade of development, it has grown from a simple browser extension into a full-suite writing tool available across devices and platforms.

At its core, Grammarly uses a combination of natural language processing, machine learning, and large language model technology to analyze your writing in real time. The system goes beyond basic spell-check by understanding context, tone, sentence structure, and intent to deliver nuanced, situation-aware suggestions. Its AI engine is trained on billions of text samples, allowing it to recognize patterns in both errors and effective communication to give you increasingly precise recommendations as it learns your personal writing style.

Three standout features define the Grammarly experience in meaningful ways. First, the tone detector analyzes your entire document and tells you exactly how your writing will land emotionally — whether confident, formal, friendly, or urgent — so you can adjust before sending. Second, GrammarlyGO, the generative AI feature, lets you draft, rewrite, and ideate directly within the editor using custom prompts tailored to your goals and audience. Third, plagiarism detection scans your text against billions of web pages to flag unoriginal content, making it especially valuable for academic and professional publishing contexts.

Grammarly operates on a freemium pricing model, offering a robust free tier that covers essential grammar and spelling corrections suited for casual writers and students just getting started. The Premium plan, priced around $12 per month when billed annually, unlocks advanced clarity rewrites, tone adjustments, and full GrammarlyGO access, making it ideal for professionals and content creators who write frequently. The Business plan, designed for teams and organizations, adds style guides, brand tone settings, and centralized billing, typically running around $15 per member per month at scale.

By 2026, Grammarly is used by over 50,000 professional teams and more than 30 million daily active users spanning industries from marketing and law to healthcare and education. You can find it embedded in tools like Google Docs, Microsoft Word, Slack, and most major browsers, meaning it fits seamlessly into workflows without disrupting how you already work. Its measurable impact includes faster email response rates, higher content approval rates within corporate teams, and demonstrably improved student writing scores in institutions that have formally adopted it as a learning aid.

⚡ Key Features

Real-time grammar and spelling correction helps users write error-free content across all platforms.
Advanced punctuation suggestions ensure your writing flows naturally and reads with professional clarity.
AI-powered tone detection analyzes your text and suggests adjustments to match your intended audience.
Plagiarism checker scans billions of web pages to ensure your content is original and properly attributed.
Vocabulary enhancement suggestions replace weak or repetitive words with more impactful and precise alternatives.
Context-aware writing suggestions go beyond basic corrections to improve overall sentence structure and readability.
Grammarly integrates seamlessly with browsers, Microsoft Office, and Google Docs for distraction-free writing.
Grammarly Business enables teams to maintain consistent brand voice and style across all written communications.

🎯 Popular Use Cases

🔍
Professional Email Writing
Business professionals use Grammarly to polish client-facing emails, ensuring tone is appropriate and grammar is flawless. They avoid miscommunication and project a more credible, professional image.
📝
Academic Essay Editing
College students and researchers use Grammarly to catch grammar errors, improve sentence clarity, and check for plagiarism in essays and papers. They submit higher-quality work and improve their academic grades.
📊
Content Marketing Creation
Content marketers and bloggers use Grammarly to optimize blog posts, social media captions, and ad copy for clarity and engagement. They produce polished, publish-ready content faster with fewer editing rounds.
🎓
ESL Language Learning
Non-native English speakers use Grammarly as a real-time learning tool to understand grammar rules and vocabulary improvements. They gradually build stronger English writing skills through detailed inline explanations.
💼
Resume and Cover Letter Writing
Job seekers use Grammarly to ensure their resumes and cover letters are error-free and strike the right professional tone. They make stronger first impressions and increase their chances of landing interviews.

💬 Frequently Asked Questions

Is Grammarly free to use?
Yes, Grammarly offers a free plan that includes basic grammar, spelling, and punctuation checks. The Premium plan costs $12/month (billed annually) or $30/month (billed monthly), while Grammarly Business starts at $15 per member per month for teams of 3 or more.
How does Grammarly compare to ChatGPT?
Grammarly is purpose-built for writing assistance, focusing on grammar correction, tone detection, plagiarism checking, and style improvements within existing text. ChatGPT is a generative AI that creates content from scratch but lacks Grammarly's deep integration with browsers, Microsoft Word, and Google Docs for real-time inline editing.
What can I do with Grammarly?
Grammarly can check grammar, spelling, punctuation, sentence clarity, vocabulary enhancement, and writing tone across emails, documents, and social media. Premium users also get access to advanced style suggestions, a plagiarism detector that checks against over 16 billion web pages, and an AI writing assistant for generating and rewriting content.
Is Grammarly safe and private?
Grammarly encrypts all data in transit using TLS and at rest using AES-256, and it does not sell user data to third parties. However, by default Grammarly does store text you type to improve its models, though users can opt out of data collection in account settings.
How do I get started with Grammarly?
Visit Grammarly.com and sign up for a free account using your email, Google, or Apple credentials. Install the Grammarly browser extension for Chrome, Firefox, Safari, or Edge, or download the desktop app and Microsoft Office add-in to start receiving real-time writing suggestions immediately.
What are the limitations of Grammarly?
Grammarly can occasionally misinterpret intentional stylistic choices, such as sentence fragments used for creative effect, flagging them as errors. It also has limited understanding of highly technical or domain-specific jargon, and the free plan lacks advanced suggestions like tone adjustments, clarity rewrites, and plagiarism detection.

👤 About the Founder

Brad Hoover
Brad Hoover
CEO · Grammarly
Brad Hoover has served as CEO of Grammarly since 2011, leading the company from a small startup to a global AI writing assistant used by over 30 million people daily. He holds an MBA from Stanford Graduate School of Business and previously worked in venture capital at General Catalyst Partners. Recognizing the universal challenge of clear written communication, Hoover joined Grammarly to democratize access to professional-quality writing assistance for everyone.

⭐ User Reviews

★★★★★
Grammarly's tone detector has completely changed how I review content before publishing — I can instantly see whether a piece reads as confident, friendly, or too formal. The browser extension works seamlessly across Gmail, WordPress, and Google Docs, which saves me a huge amount of time.
SK
Sarah K.
Content Manager
2025-11-15
★★★★★
I use Grammarly mainly for writing technical documentation and internal Slack messages, and the clarity suggestions genuinely help me write more concisely. I knocked off one star because it occasionally flags domain-specific terms as errors, but the custom dictionary feature helps mitigate that.
JT
James T.
Software Engineer
2025-10-20
★★★★★
The plagiarism checker alone is worth the Premium subscription for our team — it gives me peace of mind before we publish any long-form content. Combined with the AI rewriting suggestions, our content production speed has increased by at least 30%.
PM
Priya M.
Marketing Director
2025-09-10
🌐 Visit Website
grammarly.com
Grammarly
AI writing assistant by Grammarly — grammar checking, tone improvement, and clarity enhancement with Grammarly.
📤 Share This Tool
ℹ️ Quick Info
CategoryWriting & Content
DeveloperGrammarly
PlatformWeb, iOS, Android
AccessFreemium
Rating⭐ 4.7/5
Launched2009
🏷️ Tags
Writing & ContentFreemiumGrammarlyAI

🔥 More Tools You Might Like