Streamlit’s nature as a web framework opens doors for web developers to use it with any type of business or technology. Artificial Intelligence, particularly in the generative domain—including Large Language Models (LLMs) and Retrieval-Augmented Generation (RAG) models—is now more accessible than ever. Companies and corporations are competing to deliver better, faster, and more accessible models by providing a wide range of LLMs through APIs. This approach frees end users from relying solely on official portals to harness the immense capabilities of an LLM. In this chapter, we will explore LLMs, learn how to use them programmatically, and build a demo application in Streamlit that functions as a personal web information agent.