AI API overview

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How the API works

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Authentication

Authorization: Bearer YOUR_API_KEY

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How you pay

• Each model has its own price per 1M tokens, with separate prices for input and output tokens. Some models also have prices for reading from and writing to the prompt cache. See Models and pricing.
• Promotions and new-signup offers can lower a model’s price. When a promotion applies to you, the prices on the Models page include it. The price and promotion in effect when a request starts apply to that request. If a promotion has a spending limit and the limit runs out before the request finishes, the promotion may discount less.
• You are charged after a request finishes, for the tokens it used. The charge is deducted from your balance automatically.
• If you have token credits for the model, they pay for the request’s tokens before your balance does. Your balance pays only for the rest. Requests under a 100% promotion don’t use your token credits while the promotion covers them.
• If your balance is zero or negative and you have no token credits for the model, new requests to that model fail with HTTP status 402 and the code insufficient_balance. Requests that can’t cost you anything, such as requests under a 100% promotion, still work. Add balance to continue.
• Because the charge comes after the request, a request can take your balance below zero. Your next top-up covers the negative amount first.

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Connect your code

export SINARCLOUD_API_KEY="YOUR_API_KEY"

$env:SINARCLOUD_API_KEY = "YOUR_API_KEY"

import os
from openai import OpenAI

client = OpenAI(
    base_url="https://ai.sinarcloud.com/v1",
    api_key=os.environ["SINARCLOUD_API_KEY"],
)

response = client.chat.completions.create(
    model="deepseek/deepseek-v4-1-flash",
    messages=[{"role": "user", "content": "Hello"}],
)
print(response.choices[0].message.content)

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Next steps