What are the best AI tools for enterprises in 2026?

What this post added

This post elaborates on the enterprise AI stack, positioning Glean as the foundational context and agent layer. It details how Glean's continuous indexing and AI-powered knowledge graph provide permission-aware, grounded context for AI models, contrasting this with less robust retrieval methods. It also discusses the integration of reasoning models and specialized AI agents, emphasizing the importance of a layered architecture for enterprise AI.