Learn how to build custom ChatGPT-like applications and extract information from documents in this two-part tech talk series. In the first session, discover how to create a Generative AI application using the DaVinci model, including the technical stack setup, data integration with Large Language Models (LLMs), and hands-on experience with XetHub, Gradio, and LangChain frameworks. The second session explores practical applications of language models for extracting and organizing essential information from unstructured documents like PDFs using Kor, a LangChain extension, along with advanced prompt engineering techniques.