Grammarly Inc. vs Notion Labs, Inc.: Strategic Comparison

This in-depth comparison examines Grammarly Inc. and Notion Labs, Inc. across revenue, market value, business model, competitive positioning, and long-term growth strategy. Whether you are researching Grammarly Inc. on its own, evaluating Notion Labs, Inc., or weighing the two companies side by side, the breakdown below highlights where each company leads and where the gap between Grammarly Inc. and Notion Labs, Inc. is widest.

On the headline numbers, annual revenue is $700.0M (FY2025) for Grammarly Inc. and N/A for Notion Labs, Inc., while their respective market capitalizations stand at N/A and N/A. Both Grammarly Inc. and Notion Labs, Inc. are headquartered in United States. Their local markets and applicable rules may still differ.

Grammarly Inc.: Grammarly is one of the most widely used writing tools on the internet. It started as a grammar checker for students, grew to tens of millions of users through a free Chrome extension launched in 2015, and added enterprise plans in 2017. In 2025 the company renamed itself after Superhuman, the email app it acquired. The Grammarly name now refers to the writing product, which sits alongside Superhuman Docs (formerly Coda), Superhuman Mail and the Superhuman Go assistant. The company is headquartered in San Francisco, California. The incredibly dominant AI writing assistant was founded in Ukraine in 2009, aggressively growing from a simple spell-checker into a massive, highly ubiquitous platform that fundamentally alters how the entire corporate world communicates.

Notion Labs, Inc.: Notion is a connected workspace where pages, databases and wikis are built from interchangeable blocks. A team can keep its handbook, product roadmap, meeting notes and project tracker in one place, link them with relational databases, and now ask AI agents to search, summarize or update them. Starting with students, startups and creators, Notion has grown into a tool used by companies such as OpenAI and Cursor. The company is headquartered in San Francisco, California. Notion was founded in 2013 in San Francisco, California, by Ivan Zhao and Simon Last; after a complete codebase rewrite while living in Kyoto, Japan, they relaunched Notion 2.0 to create the iconic all-in-one connected workspace used by over 100 million people worldwide.

Grammarly Inc. and Notion Labs, Inc. pursue distinct approaches to generating revenue, and understanding how each company operates is the foundation of any fair comparison between Grammarly Inc. and Notion Labs, Inc..

Grammarly Inc. business model: Grammarly runs a freemium subscription model. The free browser extension and apps give basic spelling and grammar fixes and pull in tens of millions of users. Revenue comes from people upgrading to the paid individual plan (Premium, later renamed Pro) for full-sentence rewrites, tone changes and more generative AI prompts, and from organizations buying team, business and enterprise plans that add admin controls, style guides, brand tones, analytics and security features. Grammarly for Education sells licenses to schools and universities. Since the 2025 rebrand, the parent company Superhuman also sells Coda/Superhuman Docs, Superhuman Mail and Superhuman Go, and bundles them into suite plans. The company does not publish a revenue breakdown by product or customer type.

Notion Labs, Inc. business model: Notion uses a freemium subscription model. Individuals can use a Free plan; teams pay per member per month for Plus (about $10 billed annually), Business (about $20, which since May 2025 includes full Notion AI such as agents, AI Meeting Notes and Enterprise Search) or custom-priced Enterprise contracts with SSO, audit logs and admin controls. Revenue grows as free users bring Notion into their employers and teams upgrade to higher tiers. The former standalone Notion AI add-on was retired for new buyers in 2025 when AI moved into the Business plan.

The durability of a company's moat often decides long-term winners. Here is how the competitive advantages of Grammarly Inc. stack up against those of Notion Labs, Inc..

Grammarly Inc. competitive advantage: Grammarly's main advantage is distribution. It runs inside more than 1 million apps and websites through one extension, so users get suggestions in Gmail, Slack, Google Docs, Word or a CRM without copying text into a chatbot. That reach, which the company calls its in-app 'rails', is what Superhuman Go now uses to deliver its own and partner AI agents. The company also has 16 years of feedback on writing suggestions and an established enterprise security and admin setup.

Notion Labs, Inc. competitive advantage: Notion's edge is a flexible block-and-database model that lets non-engineers build their own wikis, trackers and lightweight apps, plus a large creator and template community that drives organic sign-ups. Bottom-up adoption means many enterprise deals start with employees who already use Notion personally. Bundling AI agents, email, calendar and meeting notes into one workspace raises switching costs as more work lives inside Notion.

Future prospects matter as much as current results. The growth strategies below explain how Grammarly Inc. and Notion Labs, Inc. each plan to expand from here.

Grammarly Inc. growth strategy: Grammarly's strategy since 2023 has been to move from correcting text to doing work for the user. It launched GrammarlyGO generative features in 2023. It agreed to acquire Coda in December 2024 and made Coda co-founder Shishir Mehrotra CEO. It closed the Superhuman Mail acquisition in July 2025 and rebranded the company as Superhuman in October 2025, when it launched Superhuman Go, an assistant that runs first- and third-party agents across apps. In 2026 it added partner agents from Box, Gamma and Wayground to Go, rebuilt Coda as Superhuman Docs, and agreed in June to acquire GPTZero to add AI detection and authenticity tools. General Catalyst's $1 billion in 2025 pays for sales and marketing, so the company's own cash can go to acquisitions.

Notion Labs, Inc. growth strategy: Notion's growth plan has three parts: move AI into higher-priced plans (full Notion AI now sits in Business and Enterprise), expand the workspace into adjacent apps (Notion Calendar, Notion Mail, Sites, Forms, AI meeting notes), and sell upmarket to large enterprises with connectors to Microsoft Teams, SharePoint, Gmail and Slack plus Enterprise Search across those tools.

A closer look at the financial trajectory of Grammarly Inc. and Notion Labs, Inc. rounds out the comparison.

Grammarly Inc.: Grammarly is private and does not publish audited financial statements. On May 29, 2025, while announcing $1 billion in nondilutive financing from General Catalyst, the company said it had more than $700 million in annual revenue and more than 40 million daily users. The General Catalyst money was structured as capital repaid from revenue generated by the sales and marketing it funds, not as new equity, so the company's last equity valuation is still $13 billion from the November 2021 round led by Baillie Gifford and BlackRock funds. The company was profitable and bootstrapped from 2009 until its first venture round of $110 million in 2017, then raised $90 million in 2019 at a valuation above $1 billion. It has not filed for an IPO.

Notion Labs, Inc.: Notion does not publish audited financials. Its key disclosed figure is annualized revenue of more than $500 million, stated to CNBC in September 2025 alongside the launch of Notion AI agents. CNBC later reported that half of Notion's Business and Enterprise customers pay for AI features, up from 10-20% a year earlier. Notion has raised roughly $330 million in total, most of it the $275 million Series C at a $10 billion valuation in October 2021, and has since used secondary tender offers rather than new primary rounds; the latest, at an $11 billion valuation, gave employees and early investors liquidity. Third-party estimates (e.g. Sacra) put 2026 ARR well above $500 million, but these are not company-confirmed.