Terms of Service

These Terms are entered into between Amux AI ("we", "us", or "Amux") and you ("you" or "user"), and apply to all of your use of the Amux service. Amux AI is operated by SentenceEnd Inc., incorporated in the State of Wyoming, United States.

By accessing or using Amux you confirm that you have read, understood, and agree to these Terms. If you do not agree, please stop using the service. Please also read the Privacy Policy and the Refund Policy.

If you accept these Terms on behalf of an entity, you represent and warrant that you are duly authorized to do so and that the entity is bound by these Terms.

⚠️ Important notice regarding service availability

The service is not offered in mainland China, and we do not accept registration or use by individuals or entities located in mainland China. If you are located in mainland China, please do not register or use the service. Circumventing this restriction by any means breaches these Terms; see Section 15.

1. The service#

Amux is an LLM API gateway. We neither train nor host models; we forward requests to upstream model providers according to your configuration and handle authentication, billing, and observability in one place.

The actual capability, availability, and output quality of a model are determined by its upstream provider. We make no representation or warranty, express or implied, as to the accuracy, completeness, or suitability of model output.

The model catalog, available providers, and prices may change as upstream offerings change. Calls already made settle at the price in effect when the call occurred.

2. Accounts#

An account is required to use the service. You agree to:

• Provide true and accurate registration information and keep it current
• Take responsibility for all activity under your account
• Notify us immediately upon discovering any unauthorized use

Accounts may not be transferred, rented, or shared with third parties. Where there is reasonable cause — including risk management, compliance, or the breaches described in these Terms — we may decline to open or continue providing the service.

3. API keys#

A key is your identity: anyone holding it can make calls in your name and incur charges. You should protect it as you would a password and revoke it in the console immediately if it is exposed.

Calls and charges arising from a leaked key are the account holder's responsibility. We provide revocation, disabling, spend limits, usage alerts, and similar tools to reduce loss, but cannot undo upstream costs already incurred.

4. Billing and payment#

• Inference is billed at the upstream provider's price, with no markup by us
• Billing is prepaid: add credit first, and calls deduct from the balance
• Top-ups carry no processing fee; the credit you receive equals the amount you pay
• If the client disconnects midway, the portion already generated is still billed — the upstream cost has been incurred
• Attempts that fail during routing failover are not billed; image and video tasks that fail to generate are not billed
• Balance is denominated in credits, may only offset call charges, and cannot be withdrawn

For the full rules, see billing overview.

Tax, where applicable, is calculated exclusive of the price, as shown on the checkout page.

5. Refunds#

Unconsumed paid credit may be refunded within 24 hours of a successful top-up, less the payment processing fee actually incurred on that top-up. Promotional credit and subscription allowances are not refundable.

For the full rules, calculation method, and process, see the Refund Policy.

6. Acceptable use#

You are responsible for all content sent through Amux, and you agree to:

• Comply with all applicable laws and regulations
• Comply with the usage policies of the upstream provider you call — we are only the conduit, and your obligations to the upstream remain in force
• Not generate or distribute content that infringes the rights of others, endangers others, or is prohibited by law
• Not use the service for fraud, impersonation, or circumventing identity verification
• Not attempt to bypass spend limits, interfere with the operation of the service, or conduct unauthorized probing or stress testing
• Not resell the service, or provide it to third parties in a manner substantially equivalent to resale, without our prior written consent

The full rules are in the Acceptable Use Policy, which forms part of these Terms.

Where these requirements are breached, we may restrict or terminate the service; in serious cases, the related fees are not refundable.

7. Third-party providers#

Requests are forwarded to the upstream provider you select or that routing lands on, and are subject to that provider's own terms and usage policies.

We are not responsible for the conduct, availability, or policy changes of third-party providers. Where an upstream provider discontinues service or changes its policies, we will make reasonable efforts to offer an alternative, without guarantee.

8. Data and privacy#

We do not use your requests or responses to train any model. Bodies of successful text and chat calls are not recorded; failed calls are sampled for troubleshooting and kept for no more than 15 days, as described in the privacy policy.

For how personal information and call data are handled, see the Privacy Policy. To sign a data processing agreement (DPA), contact account@amux.ai.

9. Inputs, outputs, and intellectual property#

9.1 Your inputs and outputs#

You retain all rights in your inputs and outputs. We claim no ownership of them and do not use them to train any model.

"Output" in this Section means everything a model generates, including text, images, video, audio, and content derived from them.

9.2 Three things to know about output#

Model output is produced by a probabilistic model, and therefore:

• Output may be similar or identical to another user's output. Similar inputs often produce similar results. We do not warrant that your output is unique, nor do we secure any exclusive rights in it for you
• We do not warrant that output is eligible for copyright or other intellectual property protection. In some jurisdictions purely machine-generated content is not a protectable work, and its protectability is determined by applicable law
• We do not warrant that output does not infringe third-party rights. Output may resemble existing works, trademarks, or a person's likeness, and you should check before using it externally

9.3 You are responsible for how output is used#

How output is used is your decision, and the consequences are yours, including publication, distribution, commercial use, and any decision made on the basis of it. Sections 11 and 12 apply to output as well.

For the specific rules on generated content, see the Acceptable Use Policy.

9.4 Our intellectual property#

The Amux software, interface, documentation, and brand marks are ours. They may not be copied, modified, or used commercially without written permission.

Third-party brand marks belong to their respective owners and are used only to refer to the services they provide, implying no affiliation or endorsement.

10. Service availability#

We make reasonable efforts to keep the service available and to switch to a healthy provider when an upstream provider fails.

No formal service level agreement (SLA) is currently offered. Upstream outages, rate limiting, and policy changes are outside our control.

We may modify, suspend, or discontinue any part of the service at any time. Where the change is material, we will give advance notice by email or in the console.

11. Disclaimer of warranties#

To the maximum extent permitted by law, the service is provided "as is" and "as available", without warranty of any kind, express or implied, including without limitation the warranties of merchantability, fitness for a particular purpose, and non-infringement.

We do not warrant that the service will be uninterrupted or error-free, nor do we warrant the accuracy or suitability of any output.

12. Limitation of liability#

To the maximum extent permitted by law:

• We are not liable for indirect, incidental, or punitive damages, or for lost profits, business interruption, or loss of data
• Our aggregate liability is limited to the fees you actually paid us in the three months preceding the event giving rise to the liability

These limitations apply even if a remedy fails of its essential purpose.

13. Indemnification#

You will indemnify and hold us harmless against third-party claims arising from your breach of these Terms, your violation of applicable law, or content you generate or distribute through the service, including reasonable legal fees.

14. Suspension and termination#

Your termination. You may stop using the service and request account closure at any time.

⚠️ Closing an account does not itself trigger a refund. Refunds of paid credit are subject to the time limit in the Refund Policy (currently 24 hours from a successful top-up); top-ups beyond that limit are no longer eligible, and promotional credit and subscription allowances are never refundable. Consider spending down your balance before closing the account.

Our termination. We may suspend or terminate the service where:

• These Terms are seriously breached, in particular Section 6 on acceptable use
• The geographic restriction in Section 15 is breached or circumvented
• There is payment risk such as fraud, stolen cards, or chargebacks
• Required by law or a competent authority

Where termination follows a breach, the related fees are not refundable. If your account is suspended or banned, you may appeal through a ticket or by emailing support@amux.ai.

On termination, the provisions of these Terms that by their nature should survive (including Sections 9, 11, 12, 13, 15, and 16) continue in effect.

15. Geographic restrictions, export control, and sanctions#

15.1 Service availability#

The service is not offered in mainland China. We do not accept registration, access, or use by individuals or entities located in mainland China, and we do not direct any service, support, or commercial arrangement to them.

By registering or using the service, you represent and warrant that:

• You are not located in mainland China and are not using the service on behalf of an individual or entity located there
• The account information, billing details, and payment method you provide are true, accurate, and consistent with your actual location

15.2 No circumvention#

Circumventing this restriction by any technical or non-technical means is prohibited, including without limitation:

• Using a VPN, proxy, relay, or other network tool to hide, disguise, or alter your actual location
• Registering or paying with false, borrowed, or nominee identity information, contact details, billing address, or payment method
• Using another person's account, or providing an account or API key to a third party located in mainland China
• Providing the service directly or indirectly to users in mainland China by resale, purchasing agency, relaying, mirroring, or repackaging

Each of these constitutes a material breach of these Terms.

15.3 Verification and enforcement#

We may verify an account's actual location using access source addresses, billing and payment information, account behavior patterns, and similar means, and may require supporting documentation.

Where this Section is breached, or where we have reasonable cause to believe it has been, we may without prior notice take one or more of the following measures:

• Restrict, suspend, or terminate the account and all its API keys
• Decline top-up, refund, and invoicing requests
• Terminate all services under these Terms

Where the service is terminated on these grounds, any remaining balance on the account, including paid credit, is not refunded, and fees already incurred are not refundable.

15.4 Allocation of responsibility#

You bear all consequences of breaching this Section. These include without limitation administrative, civil, or criminal liability arising under the laws of your location from circumventing the restriction; business losses, data loss, and lost profits resulting from service interruption or account termination; and any third-party claims arising from them.

To the maximum extent permitted by law, we bear no liability for those consequences. Where your breach of this Section causes us loss or exposes us to a third-party claim, you will indemnify us under Section 13.

15.5 Export control and sanctions#

You further represent and warrant that you are not located in a country or region subject to comprehensive embargo by the United States or another applicable jurisdiction, are not on any applicable restricted-party list, will not use the service for any purpose prohibited by applicable export control and sanctions law, and will not resell or transfer the service to any such party.

16. Governing law and dispute resolution#

These Terms are governed by the laws of the State of Wyoming, United States, without regard to its conflict of laws rules and excluding the United Nations Convention on Contracts for the International Sale of Goods.

Any dispute arising out of or relating to these Terms shall first be addressed through good-faith negotiation. Either party may give the other written notice of the dispute, and the parties shall negotiate in good faith for 30 days from delivery of that notice.

If negotiation does not resolve the dispute, it shall be submitted to the exclusive jurisdiction of the state or federal courts located in the State of Wyoming, United States, and both parties consent to personal jurisdiction there and waive any objection based on forum non conveniens.

Nothing above prevents either party from bringing a qualifying dispute in small claims court, or from seeking interim or permanent injunctive relief in any court of competent jurisdiction to protect its intellectual property or confidential information.

17. Changes to these Terms#

When these Terms change, we update the effective date at the top of this page. Where the change is material, we give advance notice by email or in the console. Continuing to use the service after a change takes effect constitutes acceptance of the new Terms.

18. General#

• Severability. If any provision of these Terms is held invalid or unenforceable, the remaining provisions remain in effect
• No waiver. Our failure or delay in exercising any right does not waive that right
• Assignment. You may not assign your rights or obligations under these Terms without our written consent; we may assign these Terms in connection with a merger, acquisition, or transfer of assets
• Entire agreement. These Terms, together with the Acceptable Use Policy, the Privacy Policy, and the Refund Policy, constitute the entire agreement between the parties
• Notices. We give notice through your account email or the console

19. Contact us#

• General enquiries and support: support@amux.ai
• Legal and compliance: account@amux.ai
• Operating entity: SentenceEnd Inc., incorporated in the State of Wyoming, United States