1Mediumgeneral⏱ 45sWhat is Retrieval-Augmented Generation (RAG) and why is it used with LangChain?📎▼AA way to fine-tune model weights directlyBA pattern that retrieves relevant documents from an external knowledge base (often a vector store) and injects them into the prompt so the LLM can answer using up-to-date or domain-specific information it wasn't trained onCA method for compressing promptsDOnly used for image generation