LangChain and LlamaIndex
🧠 LangChain: Simple Overview LangChain is a powerful open-source framework that helps you build applications using Large Language Models (LLMs) like GPT-4 by connecting them with external data , tools , and memory . Think of it as the orchestrator that turns a language model into a full-fledged intelligent agent. 🔧 What Does LangChain Do? Capability Description 🔍 Retrieval Connects LLMs to vector databases (e.g., Pinecone, FAISS) for RAG pipelines 🧠 Memory Adds short-term or long-term memory to chatbots 🛠️ Tools Lets LLMs use tools like search engines, calculators, or APIs 📚 Chains Combines multiple steps (e.g., retrieval → generation → summarization) into a workflow 🧩 Agents Enables LLMs to reason and decide which tools to use dynamically 🧪 Simple LangChain Example (RAG) from langchain.chains import RetrievalQA from langchain.vectorstores import Chroma from langchain.embeddings import OpenAIEmbeddings from langchain.llms import Open...