Terms of Service

These terms are the agreement between you and Xisu AI (xisu.ai, "we") for using the service. By creating an account or using the service, you confirm that you have read and agree to these terms, the Privacy Policy and the Top-ups and refunds rules.

1. Operator

The service is run by the Xisu AI overseas operations team. See About us for an introduction.

2. Where you may use it, and who may use it

• The service is offered only in countries and regions where using this kind of service is lawful. It is your responsibility to confirm that your local law allows it; if your local law prohibits or restricts it, do not sign up or use it.
• You must have full legal capacity under your local law (usually 18 years of age or older).
• You bear the consequences of using the service in breach of your local law. We may restrict access from certain countries or regions for legal or operational reasons.

3. Accounts and keys

• You need a working email address to sign up, and you are responsible for all activity under your account.
• Keep your API keys safe. Calls and charges caused by a leaked or shared key are your responsibility; if a key leaks, disable it in the console and create a new one straight away.
• We recommend turning on two-factor authentication.

4. The service

We provide model APIs compatible with the OpenAI and Anthropic protocols. The available models, endpoints and prices are those shown on the site, and may change as upstream providers change.

We make no guarantee about the accuracy, completeness or fitness of model output. Models can produce wrong or inappropriate content; whether to rely on it is your decision — especially in medical, legal or financial settings.

5. Fees and refunds

• The service uses a prepaid balance and is charged by usage; prices are listed under Models. Charges are deducted from the balance in real time when a call completes, and new requests are refused once the balance runs out.
• We offer no credit line or post-payment.
• Prices may change. Changes are announced on the site in advance; calls already completed are charged at the price in force at the time.
• Balance can only be spent on this service. It cannot be withdrawn as cash or transferred to another account.
• Refunds follow the Top-ups and refunds rules: no refunds for reasons not caused by the platform; if you can provide evidence that a model was substituted (for example, another model passed off as the one you called), we will refund you once we have verified it.

6. Acceptable use

You must not use the service to:

• break the law where you are, or where we operate;
• generate or spread illegal content, including but not limited to sexual content involving minors, terrorism, fraud or malware;
• infringe anyone's intellectual property, privacy or other legal rights;
• breach the published usage policies of upstream model providers;
• get around rate limits, quotas, billing or content safety checks;
• resell the service without our written permission, or give your account or keys to unauthorised third parties;
• stress-test, penetration-test or reverse-engineer the service without our prior written permission.

To block illegal content, requests go through automated content safety checks, and requests that match a rule are blocked. If you break any of the above, we may suspend or terminate your account without prior notice, and any resulting loss is yours to bear.

7. Your content

To the extent the law and upstream provider policies allow, the input you send and the output the model returns belong to you, and you are responsible for what they contain and how you use them. We do not use your content to train models; how we handle it is described in the Privacy Policy.

8. Availability

We work to keep the service stable, but we do not promise it will be uninterrupted. Upstream outages or model retirements, network problems, maintenance and force majeure can make some or all of the service temporarily unavailable. We try to announce planned maintenance on the site in advance.

9. Suspension and termination

• You can stop using the service at any time and ask for your account to be deleted; the process is in the Privacy Policy.
• If you break these terms, or your use creates legal or security risk for us, other users or upstream providers, we may suspend or stop providing the service to you.
• If we decide to shut the service down, we will announce it on the site in advance and refund the unconsumed paid balance in your account at that time (promotional and bonus amounts excluded).

10. Disclaimer and limitation of liability

To the fullest extent permitted by law, we are not liable for any indirect, incidental, special or consequential loss (including lost profits, lost data or business interruption). Our total liability is capped at the total amount you actually paid us in the three months before the event giving rise to the claim.

11. Changes to these terms

We may revise these terms. The revised terms are published on this page, and material changes are announced on the site. If you keep using the service after a change takes effect, you accept the revised terms; if you don't agree, you can stop using the service and ask for your account to be deleted.

12. Governing law and disputes

These terms are governed by the law of the place where the operator is based. Any dispute arising from these terms or the service should first be settled by good-faith negotiation through a support ticket; if that fails, it will be submitted to the competent body where the operator is based.

13. Contact

For questions about these terms, reach us through a support ticket or on Telegram at @xisuai_support.