Craft Your Own AI Knowledge Bank: Guide to Building a Custom LLM With LangChain and ChatGPT by Martin Karlsson The course is structured into four modules, culminating in a final project presentation where participants showcase their custom models. The scope and depth of the course content can be adjusted for participants with less technical experience than the skills outlined in the prerequisites section. We use evaluation frameworks to guide decision-making on the size and scope of models. For accuracy, we use Language Model Evaluation Harness