Prepare the environment

Browser Use requires Python 3.11 or higher.

First, we recommend using uv to setup the Python environment.

uv venv --python 3.11

and activate it with:

source .venv/bin/activate

Install the dependencies:

uv pip install browser-use

Then install playwright:

playwright install

Create an agent

Then you can use the agent as follows:

agent.py
from langchain_openai import ChatOpenAI
from browser_use import Agent
import asyncio

llm = ChatOpenAI(model="gpt-4o")

async def main():
    agent = Agent(
        task="Find a one-way flight from Bali to Oman on 12 January 2025 on Google Flights. Return me the cheapest option.",
        llm=llm,
    )
    result = await agent.run()
    print(result)

asyncio.run(main())

Set up your LLM API keys

ChatOpenAI and other Langchain chat models require specific API keys. For example, for OpenAI and Anthropic, you can set the API keys in your .env file, such as.

.env
OPENAI_API_KEY=
ANTHROPIC_API_KEY=

For other LLM models you can refer to the Langchain documentation to find how to set them up with their specific API keys.