Large Language Models (LLMs) serve as fundamental building blocks for AI-driven applications. Instead of developing code from scratch, AI engineers utilize open-source frameworks to streamline implementation and apply best practices to application development. In this session, you will learn about popular open-source frameworks commonly used with LLMs, including LangChain, LlamaIndex, Chainlit, and Hugging Face Transformers. Additionally, we will explain how these frameworks can be used in watsonx.ai.