Glean is an American technology company specializing in enterprise-grade artificial intelligence (AI) and search capabilities.^[1][2] According to Bloomberg, its valuation is near $2 billion.^[3]

The company was founded by a team of experienced engineers and entrepreneurs, Arvind Jain, T. R. Vishwanath, Tony Gentilcore, and Piyush Prahladka, in Palo Alto, California, United States, in 2019.^[4]

In March 2019, shortly after its establishment, Glean raised $15 million in Series A funding co-led by Kleiner Perkins and Lightspeed, which included participation from the Slack Fund.^[5][6][7] In March 2021, the company closed a Series B funding round of $40M led by General Catalyst.^[8][9]

In September 2021, Glean introduced its assistive search tool to the market. This tool was designed to pull together information from dozens of disparate applications, streamlining access to critical data across various platforms.^[4][10][11]

In May 2022, the company secured a $100M Series C led by Sequoia Capital at a $1B valuation and hit the Unicorn status.^[12][13] In February 2024, Glean raised over $200 million in Series D funding at a $2.2B valuation.^[14]

In April 2023, Glean introduced its first enterprise-grade generative AI search capabilities, including Generative AI Answers. Glean also introduced Expert Search and In-Context Recommendations.^[15][16] AI Answers generates a single concise answer to a natural language query, drawing from various sources of content, context, and permissions within an organization. Expert Search identifies and connects users with subject-matter experts within their company, based on Glean's analysis of content, activity and relationships. In-Context Recommendations provide users with additional content and context related to any given asset they are working on.^[17]

In June 2023, Glean introduced Glean Chat, an enterprise-grade chat assistant that enables users to answer questions, analyze and synthesize information, and create new insights, sourced exclusively from up-to-date, relevant information across their company's knowledge base.^[18][19][20]

In 2023, Glean received significant recognition, being listed in Forbes' AI50 Top AI Firms^[21] and America's Best Startups,^[22] IA40,^[23] and LinkedIn's Top Startups.^[24] Also, the company achieved Great Place to Work certification^[25] and was named a G2 Fall 2023 Leader.^[26]