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Langchain Models (legacy)
This directory contains example of how to still use Langchain models with the new Browser Use chat models.
How to use
from langchain_openai import ChatOpenAI
from browser_use import Agent
from .chat import ChatLangchain
async def main():
"""Basic example using ChatLangchain with OpenAI through LangChain."""
# Create a LangChain model (OpenAI)
langchain_model = ChatOpenAI(
model='gpt-4.1-mini',
temperature=0.1,
)
# Wrap it with ChatLangchain to make it compatible with browser-use
llm = ChatLangchain(chat=langchain_model)
agent = Agent(
task="Go to google.com and search for 'browser automation with Python'",
llm=llm,
)
history = await agent.run()
print(history.history)