Glean

Glean is a Work AI platform that connects company documents, conversations, tickets, code, and people data into search, answers, and agent execution. It is designed around workplace systems such as Google Workspace, Microsoft 365, Slack, Salesforce, and developer tools, so it solves organization-wide knowledge access more than personal document Q&A.

Its strength is enterprise deployment design. Glean emphasizes permission-aware access, more than 100 connectors, developer integrations for search, chat, and agents, MCP support, and agent toolkits. In its official Series F announcement, the company reported a $7.2 billion valuation, surpassing $100 million in ARR, and more than 100 million agent actions annually. Those are strong public signals for enterprise-market awareness.

The tradeoff is implementation weight. This is not a free individual tool; teams usually move through demo, contract, connector setup, security review, and permission-policy work. Glean Enterprise Flex combines per-user licensing with pooled usage credits, so real cost depends on rollout size and advanced capability consumption. Public language options appear focused on English, Japanese, and French rather than Korean.

Glean is a strong fit for organizations whose knowledge is scattered across many applications and needs to be retrieved securely through search and agents. For personal research or file-level summaries, NotebookLM or ChatPDF is much lighter. If the goal is to make enterprise knowledge search the execution layer for company AI workflows, Glean deserves a serious comparison slot.