Python LangChain OpenAI Demo

Vision with image URL

pip install langchain_openai
pip install langchain

# New LangChain
from langchain_openai import ChatOpenAI

llm = ChatOpenAI(
    openai_api_base="https://4zapi.com/v1",
    openai_api_key="sk-xxxxx"
)

res = llm.invoke("hello")
print(res.content)


# Older LangChain: set the relay base URL via environment variables
$env:OPENAI_BASE_URL="https://4zapi.com/v1"
$env:OPENAI_API_KEY="sk-xxxxx"