Introduction to LangChain — What It Is, Why It Matters, and What You Can Build With It
Getting Started with LangChain Getting Started with LangChain A structured introduction to the LangChain framework — what it is, why it exists, what you can build with it, and how it fits into the broader LLM ecosystem. 🔹 A Little Background — Two Ways to See Foundation Models Before jumping into LangChain, it helps to understand where it sits in the AI landscape. Foundation Models — the large pre-trained models like GPT-4, Claude, Gemini, and their open-source cousins — can be seen from two very different angles depending on who you are. Foundation Models User Perspective Builder Perspective Uses the model Builds on the model As a User , you interact with these models through interfaces like ChatGPT or Gemini — you prompt, it responds. As a Builder , however, you're wiring foundation models into r...