LangChain Templates has introduced a transformative approach for developers to create and deploy generative AI APIs, providing deployable reference architectures that blend efficiency with adaptability. The new Redis Retrieval Augmented Generation (RAG) template offers a hub of deployable architectures, encompassing tool-specific chains, LLM-specific chains, and technique-specific chains, ensuring comprehensive developer options. Central to their deployment is LangServe, which uses FastAPI to transform LLM-based Chains or Agents into operational REST APIs, enhancing accessibility and production-readiness. The Redis RAG template serves a REST API for developers to chat with public financial PDF documents, such as Nike's 10k filings, using Redis as the vector database, ensuring rapid context retrieval and grounded prompt construction. To deploy the template, developers need to set environment variables, create a Python3.9 virtual environment, install the LangChain CLI and Pydantic, and follow a step-by-step guide to build with the template locally.