LangChain Explained — Your First AI Agent in 7 min

Description

LangChain is the most-used framework for building LLM apps — but the docs throw five concepts at you at once. This video strips it down to the three primitives that matter and gets you a working agent in 15 lines of Python, running today on Google's free Gemini tier — no credit card needed. Then I rewrite the exact same agent WITHOUT LangChain in raw google-genai so you can see line-for-line what the framework was doing for you (and whether you actually need it).