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gpt-5-nano

OpenAI · Reasoning

Available
Context window
400K
Input / 1M
$0.05
Cache / 1M
$0.005
Output / 1M
$0.40

Call this model

request.py
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-nano",
    messages=[{"role": "user", "content": "Explain retrieval augmented generation."}],
)