LangChain & LangGraph

Build sophisticated LLM applications with composable chains and agent graphs.

Quick Start

pip install langchain langchain-openai langchain-anthropic langgraph

from langchain_anthropic import ChatAnthropic
from langchain_core.prompts import ChatPromptTemplate

# Simple chain
llm = ChatAnthropic(model="claude-3-sonnet-20240229")
prompt = ChatPromptTemplate.from_template("Explain {topic} in simple terms.")
chain = prompt | llm