In this article, you will learn how LangChain, LlamaIndex, and raw API calls each solve a different layer of the LLM application stack, and how to choose among them based on what your project actually requires.
Topics we will cover include:
What each option is designed to do, stated plainly without marketing spin.
How the three approaches compare on performance, token overhead, debugging clarity, and code volume.
A practical decision framework for picking the right level of abstraction before you build — and before that choice becomes expensive to undo.
