3 Minutes to leading global models

from openai import OpenAI

client = OpenAI(
    base_url="https://api.hao.ai/v1",
    api_key="YOUR_HAOAI_API_KEY"
)

response = client.chat.completions.create(
    model="openai/gpt-5.4",
    messages=[{"role": "user", "content": "Hello!"}]
)