gpt-5.2

from openai import OpenAI

client = OpenAI(
    base_url="https://api.tokener.ai/v1",
    api_key="sk-tk-••••••••••••",
)

response = client.chat.completions.create(
    model="gpt-5.2",
    messages=[{"role": "user", "content": "Explain retrieval augmented generation."}],
)