Chain Component in LangChain
LangChain is a powerful framework for building applications with Large Language Models (LLMs). One of its core features is the Chain Component , which allows developers to link multiple operations together to create complex workflows. In this blog, we'll explore different types of chains in LangChain and demonstrate their usage with code examples. 1️⃣ LLMChain (Basic Single-Step Chain) 🔹 Executes a single LLM call based on a prompt. 🔹 The simplest chain type. ✅ Use Case: When you need a single prompt-response from an LLM. Example: 2️⃣ SequentialChain (Step-by-Step Execution) 🔹 Executes multiple chains in sequence where each step depends on the output of the previous step. ✅ Use Case: Multi-step processes where each step depends on the previous output . 📌 Example: Blog Outline → Content Expansion → Summary Example: 3️⃣ SimpleSequentialChain (Basic Sequential Execution) 🔹 Similar to SequentialChain, but only passes the last step’s output forward (less flexible). 🔹 ...