Chat With Your PDFs — Deploying a Simple RAG Application with Langchain, OpenAI and Choreo Large Language Models have turned the technology world upside down in the past two years and continue to disrupt the technology landscape. What ChatGPT started has been supported by other technology giants with the creation of LLMs like Claude, Gemini, and Llama. Both tech-savvy individuals and those less familiar with technology have integrated LLMs into their daily lives.