Grammarly

Grammarly is an AI-powered writing and communication assistant designed to help individuals, students, professionals, teams, and organizations communicate more clearly and effectively. Founded in 2009 by Max Lytvyn, Alex Shevchenko, and Dmytro Lider, Grammarly began as a grammar-checking tool for students and evolved into a broader AI communication platform. Grammarly is now part of the Superhuman suite following Superhuman’s acquisition of Coda and Superhuman Mail in 2025.

The platform works across websites, desktop applications, mobile devices, documents, email, messaging platforms, and other workplace environments. Its goal is to provide writing assistance directly where users are already working rather than requiring them to repeatedly copy and paste text into a separate editor. Grammarly says its technology is available across more than 1 million apps and websites.

Grammarly’s core capabilities include grammar and spelling correction, proofreading, clarity improvements, tone suggestions, sentence and paragraph rewriting, generative AI, translation, and writing assistance. The platform can help users make writing more concise, adjust the tone of a message, improve sentence flow, and produce or revise text. Its current website also highlights AI agents such as the Humanizer agent and AI Detector agent.

For organizations, Grammarly provides additional communication and administration capabilities. Enterprise features include unlimited members, dedicated support, confidential mode, granular roles and permissions, data loss prevention, and unlimited generative AI prompts. Grammarly also provides organizational analytics and APIs for companies that want to integrate writing-quality or usage information into their own systems.

Grammarly’s integrations are one of its major strengths. It works with platforms such as Google Docs, Microsoft Word, Gmail, Microsoft Outlook, Slack, Salesforce, Microsoft PowerPoint, LinkedIn, Microsoft Teams, Google Sheets, Zendesk, and Jira. It is also available through browser extensions for Chrome, Safari, Firefox, and Edge, as well as Windows, Mac, iOS, Android, and iPad applications.

The platform has expanded substantially beyond English. Grammarly currently provides multilingual writing support in more than 20 languages, including English, Spanish, French, German, Portuguese, Italian, Turkish, Polish, Dutch, Czech, Ukrainian, Vietnamese, Hungarian, Swedish, Romanian, Indonesian, Slovak, Danish, Finnish, Norwegian, Tagalog, Korean, Hindi, Japanese, and Chinese. Feature availability varies by language: basic spelling and grammar support is broader, while advanced suggestions and paragraph-level rewriting are available in a smaller group of languages.

For developers and larger organizations, Grammarly offers REST APIs. Its developer platform includes Analytics API, License Management API, Writing Score API, and an AI Detection API in beta. These APIs allow organizations to evaluate writing, analyze Grammarly usage, manage licenses, and incorporate Grammarly capabilities into their own applications and workflows.

Grammarly is particularly useful for professionals who write emails, reports, proposals, presentations, marketing copy, customer communications, academic work, and other business documents. Its ability to operate inside existing applications makes it useful for teams that want consistent communication without constantly switching between tools.

Pricing

Free — $0/month

• Basic writing assistance
• Spelling and grammar corrections
• Tone detection
• 100 AI prompts
• Multilingual writing support

Pro — $12/member/month billed annually

• Everything in Free
• Full-sentence rewriting
• Tone adjustments
• Brand/style support
• 2,000 AI prompts
• Additional advanced writing capabilities

The monthly Pro price is $30/member/month. Grammarly also offers quarterly and annual billing options. Its official support documentation currently lists Pro at $30/member/month monthly, $60/member/three months quarterly, or $144/member/year annually.

Enterprise — Custom pricing

Enterprise is designed for larger organizations and includes features such as unlimited members, dedicated support, confidential mode, granular roles and permissions, data loss prevention, and unlimited generative AI prompts. Organizations need to contact Grammarly for pricing.

Pricing Model

Freemium + Subscription + Enterprise

Grammarly provides a free tier, a paid Pro subscription, and custom-priced Enterprise plans.

Pricing Note

Prices can vary by billing frequency and region. The current U.S. reference price for Pro is $12/member/month when billed annually or $30/member/month when billed monthly. Grammarly also supports regional currencies during checkout.

Review

Grammarly is a strong choice for users who want writing assistance available directly inside the applications they already use. Its biggest advantage is the combination of proofreading, rewriting, tone adjustment, generative AI, and broad application support. Instead of functioning only as a standalone grammar checker, Grammarly has developed into a wider communication assistant.

Its multilingual capabilities have also expanded significantly, making the platform more useful for international users. However, advanced functionality is concentrated in paid plans, and the exact feature set varies by language. Enterprise customers also have access to more sophisticated administrative, security, and integration capabilities than individual users.

For students, professionals, marketers, customer-support teams, sales teams, and organizations that communicate heavily through written content, Grammarly offers a mature and highly integrated writing workflow.