Glean (GLEAN) Building Enterprise AI Middleware to Connect LLMs and Internal Data

Enterprise AI middleware provider Glean (GLEAN) is expanding its role as the abstraction layer between large language models and internal data, enabling context-aware, governance-compliant, and model-flexible AI agents. The company integrates deeply with Slack, Jira, Salesforce, and Google Drive, abstracting model access and permissions to prevent hallucinations and ensure accurate, rights-based retrieval. With a $150 million Series F in June 2025, Glean’s valuation reached $7.2 billion as it competes with platform integrations by offering a neutral infrastructure layer. Key capabilities include: - Model agnostic integration with ChatGPT, Gemini, Claude, and open-source models - Document verification and line-by-line citations - Real-time connectors to enterprise tools and access governance - Scalable deployment avoiding lock-in to single vendor stacks