from langchain_openai import ChatOpenAI
openai_api_base="https://api.wlai.vip/v1",
openai_api_key="sk-xxxxx"
res = llm.invoke("hello")
#老版本langchina 通过设置环境变量的形式设置中转地址
$env:OPENAI_BASE_URL="https://api.wlai.vip/v1"
$env:OPENAI_API_KEY="sk-xxxxx"