ai-agent-book 精选快照（<2MB 代码与文档，来自 github.com/bojieli/ai-agent-book）

chapter9/browser-use-rpa/browser-use/examples/models/langchain/README.md

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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
+
+```python
+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)
+```