Terms of Service

1. Acceptance of these Terms and scope

These Terms of Service (these "Terms") are a binding agreement between you and RAYTREND TECHNOLOGY LIMITED ("AI Nexus", "we", "us") governing your use of the AI Nexus model API platform published at useainexus.com (the "Platform").

• By creating an account, requesting an API key, topping up balance, or actually sending requests to the Platform, you confirm that you have read, understood and accept these Terms.
• If you do not accept any part of these Terms, stop using the Platform immediately and ask us to close your account.
• These Terms, together with the Credit & Refund Policy and the Privacy Policy, form the entire agreement between you and us about the Platform. Where a specific matter is addressed by a dedicated policy, that policy prevails for that matter.
• We may amend these Terms as the Platform evolves. Material amendments are announced on this page and, for account holders, by email. Continued use after the announcement takes effect constitutes acceptance.
• The Platform described here is the international AI Nexus service. It is operated separately from, and is not the same agreement as, our mainland China service; the terms of one do not apply to the other.
• You must be at least 18 years old and legally able to enter into a contract to use the Platform. If you act for a company, you warrant that you are authorised to bind that company.

2. Service description

AI Nexus is a unified model API hub for developers and businesses. One OpenAI-compatible endpoint gives you access to third-party text, image and video generation models.

• Coverage: text and chat models, image generation models and video generation models, added over time.
• Integration: compatible with mainstream interface conventions, so your existing SDK and request code can be kept; you change the base URL and the API key.
• Commercial model: prepaid balance, usage-based metering, no minimum spend.
• Our role: we are a technical routing, metering and support layer. We do not develop the upstream models, and model output is generated by those upstream models under their own capability limits.
• Availability of models: the catalogue, region availability and per-model limits may change where our upstream partners change them; we will notify affected account holders where reasonably practicable.

The Platform is provided "as is" and "as available". We target 99.9% availability as a design objective (see section 8); that objective is not a guarantee of uninterrupted service.

3. Accounts, API keys and security

• You must provide accurate and complete registration information and keep it up to date. Verification may include email confirmation and business verification for corporate accounts.
• Accounts are for your own or your organisation's internal use. Do not sell, rent, lend, transfer or share your account without our written consent.
• You are responsible for keeping API keys confidential. Do not commit keys to public repositories or expose them in client-side code. Store keys server-side and rotate them regularly.
• If you suspect a key leak or unauthorised use, rotate the key in the console immediately and notify us at [email protected]. We may suspend affected keys where we detect anomalous logins, leakage or abuse, and we will notify you by email; restoration follows our verification, normally within 1 business day.
• Every request made with your API key is treated as an act by you, and the resulting charges are payable by you.
• You may close your account by written request. Closing an account does not remove liability for charges already incurred.

4. Fees, metering and payment

Metering

• Text models: billed per token, with input and output metered separately; cache hits are metered at a lower rate where the model supports it.
• Image models: billed per successfully generated image; resolution within the supported range does not add a surcharge.
• Video models: billed per token and converted into a per-second equivalent for readability. The token charge, not the per-second figure, is the billing basis.
• Failed requests caused by our platform are not charged. Requests rejected because of invalid parameters, content policy refusals from the upstream model, or your own client errors may still be charged where the upstream provider charges us.

Quotation, currency and payment

• Unit prices, discounts and bonus credit are set out in the quotation issued to you and in the settlement page of your account. These Terms do not include any price.
• Billing currency is United States Dollars (USD) unless your quotation states otherwise.
• Payment methods available to you are those shown on the settlement page, which may include card payment and bank transfer. Enterprise accounts may be invoiced with consolidated statements.
• The Platform is prepaid. Where your balance is insufficient, requests may be rejected or the account suspended until the balance is restored.
• Amounts are exclusive of any sales, use, value added or similar taxes, which are your responsibility where applicable. Withholding tax must be grossed up where required by law.

Invoices, records and disputes

• Usage records are available in real time in the console, and our system records are the primary evidence of usage.
• If you dispute an invoice or a metering result, send the details to [email protected] within 30 days of the invoice date. Claims made later are treated as accepted.
• Overdue amounts may accrue interest at 0.5% per month or the maximum rate permitted by law, whichever is lower, and may lead to suspension under section 8.

5. Bonus credit and refunds

• Prepaid balance and bonus (gifted) credit are tracked separately and consumed under the rules in the Credit & Refund Policy.
• Bonus credit has a validity period stated in your quotation, normally 12 months, and is not withdrawable or refundable as cash.
• Bonus credit may be excluded for specific models. GLM-5.3-Flash is billed at upstream list price and does not participate in bonus credit or volume tiers.

6. Acceptable use and prohibited conduct

You must use the Platform lawfully and must not:

• break any law or regulation applicable to you, including export control, sanctions, consumer protection and artificial intelligence regulations in the jurisdictions where you operate;
• generate content that is unlawful, sexually exploitative, violent or hateful, that facilitates fraud or gambling offences, or that infringes privacy, personality, intellectual property or contractual rights of others;
• generate, host or distribute malware, or attempt to attack, probe, overload or reverse-engineer the Platform;
• scrape, resell or provide the Platform to third parties as a competing API service, unless your quotation expressly grants resale rights;
• use another person's API key, or bypass rate limits, quotas, filters or billing controls;
• submit personal data of any third party without a lawful basis, or process special category data in prompts unless you have assessed the lawfulness of doing so;
• rely on model output as a substitute for professional advice in medicine, law, finance or other regulated fields, or use output for decisions that produce legal or similarly significant effects without human review.

We may monitor usage metadata for security, capacity planning and abuse detection, and may act on confirmed abuse under section 8.

7. Compliance, export control and AI obligations

• You are responsible for choosing a lawful purpose, for the content you submit and the content you publish, and for any disclosures or notices required of you (including labelling of AI-generated content where applicable).
• You warrant that neither you nor any user of your account is designated on any sanctions list applicable to you or to us, and that the Platform will not be used in or from any territory subject to comprehensive sanctions where that would breach applicable law.
• Where you act as a deployer of AI systems under regulations such as the EU AI Act, you remain responsible for the deployer obligations that apply to your use case.
• Model output may be inaccurate, incomplete or biased. You must evaluate output before relying on it and before shipping it to your end users.

8. Service changes, suspension, termination and availability

• Changes: we may update features, model versions, limits and endpoints. Where a change materially reduces functionality for you, we will give reasonable notice, normally by email.
• Maintenance: planned maintenance is announced in advance where reasonably practicable and is scheduled to minimise impact.
• Availability target: we design the Platform for 99.9% monthly availability. This figure is a design objective and service-continuity commitment only where a written SLA is separately agreed; it does not create a right to compensation by itself.
• Exclusions: availability calculations exclude downtime caused by upstream provider outages or deprecations, force majeure, your network or client, your insufficient balance, or your breach of these Terms.
• Suspension: we may suspend or limit access where required by law or upstream policy, where abuse or security risk is detected, or where payment is overdue.
• Termination: either party may terminate with 30 days' written notice, or immediately for material breach that is not cured within 10 business days of notice. On termination, unused paid balance is handled under the Credit & Refund Policy.

9. Price changes

• Unit prices may change when upstream list prices, exchange rates or our cost base change. Changes take effect on the date stated in the notice.
• For accounts under a written quotation, prices are fixed for the quotation validity period stated in that document.
• If a price increase materially affects you, you may terminate under section 8 within 15 days of the notice and request a refund of unused prepaid balance.

10. Intellectual property and confidentiality

• You keep ownership of the material you submit, to the extent you have rights in it. We do not claim rights in your prompts or in the output delivered to you, except for our own platform-layer materials.
• The Platform, including its software, endpoints, console, documentation and branding, is owned by us or our licensors and is protected by copyright and other laws. You get a limited, non-exclusive, non-transferable licence to use it while these Terms are in force.
• Feedback you give us may be used without restriction.
• Each party must keep the other's non-public information confidential, use it only to perform under these Terms, and disclose it only where legally compelled after giving notice where lawful.
• Third-party model names and marks belong to their owners and are used for identification only.

11. Disclaimers and limitation of liability

• The Platform is provided "as is" and "as available". To the maximum extent permitted by law, we disclaim implied warranties of merchantability, fitness for a particular purpose, accuracy of model output, and uninterrupted access.
• Nothing in these Terms excludes liability for death or personal injury caused by negligence, for fraud or fraudulent misrepresentation, or for any liability that cannot lawfully be excluded under Hong Kong law.
• Subject to the previous bullet, our total aggregate liability arising out of or in connection with these Terms is limited to the greater of (a) the fees you paid to us in the 12 months before the event giving rise to the claim, and (b) USD 10,000.
• Subject to the same carve-outs, neither party is liable for indirect, incidental, special, punitive or consequential loss, or for loss of profit, revenue, goodwill, data or business opportunity, even if advised of the possibility.
• Claims against us must be brought within 12 months of the event giving rise to them.

12. Governing law and dispute resolution

• These Terms are governed by and construed in accordance with the laws of the Hong Kong Special Administrative Region, excluding its conflict of laws rules and excluding the United Nations Convention on Contracts for the International Sale of Goods.
• The parties will first try to resolve any dispute through good-faith negotiation for 30 days.
• If negotiation fails, the dispute is referred to and finally resolved by arbitration administered by the Hong Kong International Arbitration Centre (HKIAC) under the HKIAC Administered Arbitration Rules in force when the Notice of Arbitration is submitted. The seat of arbitration is Hong Kong. The tribunal consists of one arbitrator. The language of the arbitration is English. The award is final and binding.
• Nothing in this section prevents either party from applying to a court of competent jurisdiction in Hong Kong for interim or injunctive relief, including to protect confidential information or intellectual property.
• Where mandatory consumer protection law in your country of residence gives you rights that cannot be waived, those rights and that country's courts remain available to you.
• If any provision is held invalid or unenforceable, the remaining provisions continue in full force and the invalid provision is replaced by the closest enforceable one.

13. Operator details and notices

Notices to you may be sent by email to your registered address or by console announcement. Notices to us must be sent to the business email above.

These Terms were first published on 9 October 2026 and take effect on the same date.