Grammarly

Grammarly was founded in 2009 by Max Lytvyn, Alex Shevchenko, and Dmytro Lider, with roots in Ukraine and headquarters in San Francisco. It began as an online grammar-checking service and grew into a broad writing-assistance platform used by millions of people.

Over time Grammarly added tone detection, full-sentence rewrites, and generative AI features, and expanded into business and enterprise offerings. In 2025 the company acquired the email client Superhuman and introduced bundled productivity tiers.

Grammarly provides real-time grammar, spelling, punctuation, clarity, and tone suggestions, along with generative AI features for drafting, rewriting, and summarizing text. It integrates across web apps, documents, and email through browser extensions, desktop apps, and mobile keyboards.

Business and enterprise plans add style guides, brand tones, analytics, centralized administration, and security controls such as SSO. The platform works across hundreds of thousands of applications and websites where users write.

Grammarly serves individual writers, students, and professionals, as well as teams and large enterprises that want consistent, high-quality communication and centralized controls. It spans consumer, education, and business markets.

Grammarly has raised substantial venture funding. It raised a $110 million round in 2017 led by General Catalyst and IVP, a $90 million round in 2019, and reached a $13 billion valuation in a 2021 Series C led by Baillie Gifford and BlackRock. In May 2025 it secured $1 billion in nondilutive, revenue-secured financing from General Catalyst's Customer Value Fund. Total equity and financing raised exceeds $1.5 billion.