About us

Who we are

Xisu AI (xisu.ai) is an API platform for large language models, run by an overseas operations team ("we" across this site).

We bring mainstream models from several vendors behind one interface that is compatible with the OpenAI and Anthropic protocols. With one key and one base URL you can call all of them and pay for the tokens you actually use — no separate sign-ups, integrations or invoices for each vendor.

What we provide

• One interface: OpenAI-compatible chat/completions, responses, embeddings and images/generations, plus Anthropic's native messages.
• Pay as you go: prepaid balance, charged per call in real time; failed requests are free; no monthly fee.
• Fully traceable: the model, token counts and cost of every single call are listed in the console.
• Verify it yourself: we publish how to check that a model is genuine — see How to confirm you are getting the real model.

Where the service is available

The service is offered only in countries and regions where using this kind of service is lawful. Please sign up and use it only where your local law allows it; if your local law prohibits or restricts the use of overseas AI API services, do not use it.

How we treat your data

• By default we do not store the content of your requests or of the model's replies;
• We never use any of your data to train models, and we never sell it to anyone;
• We keep only the minimum information needed to run the service and bill for it.

The full details are in the Privacy Policy; the rules of use are in the Terms of Service; top-ups and refunds are covered in Top-ups and refunds.

Contact us

• Support tickets: submit one from the console after signing in — best for billing, refunds and troubleshooting, where we need to look at your account;
• Telegram support: @xisuai_support.