GPT-6 Astra · 30-minute cache writes · 2M tokens

Two million tokens of 30-minute cache writes on GPT-6 Astra at $12.50 per million - 1.25x its $10 input price. The cache lives for 30 minutes after the write.

What you get

• 2M tokens of cache write 30m tokens on one API key. Order several units to stack tokens on the same key.
• A personal API key for gpt-6-astra, issued automatically once your order is completed.
• Priced at $12.50 per million cache write 30m tokens. Source: OpenAI's own pricing page.
• 1,050,000 context · 128,000 max output · reasoning effort: low / medium / high / xhigh / max · vision: Yes
• No shipping: delivery is digital, under My Account > Order History and by email.

Capabilities

• 1.25x input price
• 30-minute TTL
• Long prompt reuse

Best for

Prompts reused within a single working session.

Quick start

# pip install openai   (the sample below calls the endpoint directly)

import os, requests

resp = requests.post(
    "https://api.openai.com/v1/responses",
    headers={
        "Authorization": "Bearer " + os.environ["OPENAI_API_KEY"],
        "Content-Type": "application/json",
    },
    json={
        "model": "gpt-6-astra",
        "input": "Write a one-sentence bedtime story about a unicorn.",
    },
)
print(resp.json()["output"][0]["content"][0]["text"])