pip install openai

from openai import OpenAI

client = OpenAI(
    api_key="sk-******************************",
    base_url="https://api.apexrouter.top/v1"
)

response = client.chat.completions.create(
    model="gpt-5-mini",
    messages=[{"role": "user", "content": "你好"}]
)

print(response.choices[0].message.content)

你好！我可以帮你解答问题、写作与润色、翻译、编程、学习辅导或提供建议。你想从哪方面开始？