Agent Frameworks

How do you use Claude with LangChain?

QUICK ANSWER

To use Claude in LangChain, install the '@langchain/anthropic' package (JS/TS) or 'langchain-anthropic' (Python), and initialize the ChatAnthropic model class.

Python Setup

# Install via pip
# pip install langchain-anthropic

from langchain_anthropic import ChatAnthropic

model = ChatAnthropic(
    model="claude-3-5-sonnet-20241022",
    temperature=0
)
response = model.invoke("Hello!")
Verified against: LangChain Anthropic Python v0.3.0