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Grammarly sells AI-powered writing software that checks spelling and grammar, polishes tone, and helps people and businesses write more clearly.
Grammarly is a software company that acts like a copy editor looking over your shoulder. You type in a browser, an email, a Word document, or a phone keyboard, and its AI quietly flags mistakes, fixes grammar, and suggests clearer wording as you go. Roughly 40 million people use it every day, spread across about a million registered users and 50,000 organizations, from students writing essays to sales teams firing off emails.
The core product is free, and that free version is the engine of the whole business: it gets the software onto millions of screens, then the company charges for the more useful stuff. Grammarly Premium, aimed at individual professionals and students, adds tone suggestions, full-sentence rewrites, plagiarism checks, and a generative AI tool that can draft and reply to messages. Grammarly Business sells seats to companies that want consistent, on-brand writing across their teams, plus admin controls and analytics. That subscription model is the money maker — people pay a monthly or annual fee, and the company keeps earning as long as users keep typing. What makes Grammarly hard to dislodge is where it lives. It works inside the tools people already use — Gmail, Microsoft Word, Slack, Google Docs, and hundreds of other apps — so a rival has to match both the accuracy of the suggestions and the reach across all those surfaces. Its main threats are the AI features now baked directly into those same tools, like Microsoft's Copilot and Google's Gemini, plus writing assistants from companies like Microsoft-backed OpenAI and a swarm of AI startups. Grammarly's bet is that a specialist focused only on writing can beat a general assistant that does writing as one feature among many.
The company is private and was founded in Kyiv, Ukraine, before moving its headquarters to San Francisco as the war with Russia upended its home base — a story that matters because a large share of its engineers are still in Ukraine. It has stayed independent for years, funding growth from subscriptions rather than going public. In 2024 it laid off about 230 people, roughly a quarter of its staff, as it restructured around AI, a blunt acknowledgment that the writing-assistant market it helped create is now crowded and moving fast. The whole business rests on one simple question: when AI can write for everyone, will people still pay for something that helps them write better themselves?
Saved answer · last researched 4 Nov 2026