Terms of Service

Effective date: 6 October 2026

These Terms of Service ("Terms") form an agreement between you and Zelvimo OÜ, an Estonian private limited company registered under registry code 17582420, with its registered office at Harju maakond, Tallinn, Haabersti linnaosa, Paldiski mnt 199a-4, 13517, Estonia ("Zelvimo", "we", "us" or "our"). Zelvimo OÜ operates the Zelvimo website and AI API platform. "Zelvimo" refers to that platform and its brand. These Terms govern your use of our website, dashboard and application programming interface (together, the "Service").

Please read these Terms together with our Privacy Policy, Acceptable Use Policy, Refund Policy and Cookie Policy. By creating an account or using the Service, you agree to these Terms. If you do not agree, do not use the Service.

1. What the Service is

Zelvimo is an AI API gateway. With one OpenAI-compatible API key, you can send requests to AI models developed by third parties (for example, DeepSeek, Qwen, Kimi, Llama and gpt-oss) and run by independent inference providers, currently DeepInfra, Inc. ("Model Providers"). Models marked as unavailable on the Service cannot be used until we make them available.

When you make a request, we forward its content, including prompts, files and parameters, to the provider operating the model you select. The Model Provider generates a response, which we return to you. We charge your prepaid balance for the request according to the model's listed price and the units processed.

We do not build or train these models. We do not control their behaviour, their outputs or whether a Model Provider continues to offer a particular model.

2. Who can use the Service

  • You must be at least 18 years old and able to enter into a binding contract.

  • If you use the Service for a company or other organisation, you confirm that you are authorised to accept these Terms on its behalf. In that case, "you" also includes that organisation.

  • You must not use the Service if doing so would violate sanctions or export-control restrictions applicable to you, us or a relevant Model Provider or payment service provider.

The Service is unavailable to persons located in, ordinarily resident in or organised under the laws of the following countries or territories: Afghanistan, Algeria, American Samoa, Angola, Belarus, Bolivia, Bosnia and Herzegovina, British Virgin Islands, Cameroon, Central African Republic, China, Côte d'Ivoire, Cuba, Democratic Republic of the Congo, Guatemala, Guinea, Guinea-Bissau, Haiti, Iran, Iraq, Kenya, Kuwait, Laos, Lebanon, Libya, Mali, Monaco, Myanmar, Namibia, Nepal, Nicaragua, Niger, North Korea, Papua New Guinea, Russia, Somalia, South Sudan, Sudan, Syria, Tunisia, Türkiye, United States of America, Venezuela, Vietnam, Yemen and Zimbabwe. The Service is also unavailable in Crimea, Sevastopol, Donetsk, Luhansk, Zaporizhzhia and Kherson.

This is a list of locations where we do not offer the Service; it does not mean that every location listed is subject to comprehensive sanctions. Individual models may be unavailable in additional locations because of a Model Provider's restrictions. We apply these restrictions subject to mandatory law, including EU rules against unjustified geo-blocking. We do not refuse access or impose different conditions solely because of an EU customer's nationality, residence or establishment where those rules prohibit it.

3. Consumers and business users

Some provisions of these Terms distinguish between consumers and business users.

  • A consumer is an individual using the Service mainly outside their trade, business, craft or profession.

  • A business user is anyone using the Service for business or professional purposes, including an organisation and an individual acting for a business.

Nothing in these Terms removes any consumer right that applicable law does not allow us to exclude. Where a mandatory consumer-protection rule applies and conflicts with these Terms, that rule prevails.

4. Your account

4.1 Creating an account

You can sign up with an email address and password. You must provide accurate information and keep it up to date.

4.2 Keeping your account secure

You are responsible for safeguarding your account credentials and API keys and for activity carried out using them. Keep them confidential. Do not place API keys in public code repositories, client-side code or shared documents.

If you suspect that an account or API key has been compromised, revoke the key in your dashboard and notify us promptly at [email protected]. You may submit a formal request to that address for a review of charges associated with a documented key leak. Please include the affected API key identifier, relevant dates and charges, and any evidence of the compromise. Do not send your password or a live API key. We will review the circumstances and may offer a goodwill credit at our discretion. Nothing in this paragraph limits any rights you may have where the compromise resulted from our fault.

4.3 API keys and spending limits

You can create multiple API keys and set an optional monthly spending limit for each key. These limits are a convenience tool and are applied on a best-effort basis. Because requests may be processed in parallel and billed after a response is generated, spending may slightly exceed a limit before it takes effect.

5. Balance, prices and payments

5.1 Prepaid balance

The Service operates on a prepaid basis. Your balance is held in US dollars (USD). You need a positive balance to make paid API requests. A balance can be used only for the Service and cannot be transferred to another user.

5.2 Top-ups

  • You can top up by card in USD, EUR, GBP, CNY, JPY, INR, BRL or HKD. A single top-up may add no more than USD 10,000, or its equivalent, to your paid balance.

  • If you pay in a currency other than USD, we will show you the exchange rate and the resulting USD top-up amount before you confirm payment. We will also show the total amount payable in your selected payment currency.

  • Any applicable taxes, including VAT, will be displayed on the payment page and included in the total amount shown before you confirm an order with an obligation to pay. The amount added to your balance and the total amount charged will be shown separately where tax applies.

  • Business users can request an invoice for a top-up. The corresponding balance is credited after payment is received.

  • Card payments are handled by a third-party payment service provider. We do not request or store your full payment-card number.

  • Your bank or card issuer may impose additional charges, such as foreign-transaction fees, under its own terms. Those charges are outside our control.

After a top-up, we provide an email confirmation of the payment and balance credited, together with the applicable contract information on a durable medium. There is no subscription or automatic renewal under these Terms. Your account continues until closed, and no minimum period of paid use applies.

5.3 Welcome credit

When you sign up, we may add a promotional welcome credit of USD 1 to your balance. Welcome credit has no cash value, does not expire, cannot be refunded or transferred, and is used before your paid balance when you make a chargeable request. You may top up your paid balance at any time, including before you have used all of your welcome credit.

Welcome credit is limited to one grant per person. We may withhold or remove it if we detect multiple accounts, automated sign-ups or other abuse. Unused welcome credit ends when your account is closed.

5.4 How requests are charged

Each API request is charged against your balance according to the published price for the selected model at the time you make the request. Pricing may depend on input and output tokens or other listed units, such as images. Your dashboard shows the charge for each request.

We may change model prices, including when a Model Provider changes its prices. We publish updated prices before they apply. A changed price applies only to requests made after the new price is published; it does not change charges for earlier requests. We do not provide a separate advance notice for each price change unless applicable law requires one. You can stop making requests and seek a refund of your unused paid balance under our Refund Policy.

A request that fails because of an error on our side is not charged. If a Model Provider has processed a request, you may be charged for the units actually processed even if you cancel the request while it is streaming or the model refuses to provide the requested output, provided that the charge is lawful and consistent with the Service described to you. If we discover a billing error, we will correct it and adjust your balance accordingly. This does not limit consumer rights concerning non-supply or lack of conformity.

5.5 Balance expiry

Your paid balance does not expire because of inactivity. Welcome credit also does not expire while your account remains open, subject to the abuse provisions in section 5.3.

5.6 Refunds and withdrawal

You may request a refund of your unused paid balance under our Refund Policy. Consumers have a 14-day right of withdrawal for each top-up, as explained in section 3 of the Refund Policy. Starting to use the Service does not automatically waive that right. Statutory withdrawal, cancellation and digital-service remedies remain unaffected by these Terms.

6. Using the Service responsibly

You must use the Service in accordance with our Acceptable Use Policy, applicable law and the terms, licences and usage rules that actually apply to the selected model and the inference provider operating it. The current inference provider is DeepInfra, whose Terms of Service apply to its services. Model-specific restrictions apply only to the extent that they govern your selected model or its provision through the Service. The Acceptable Use Policy explains your responsibilities in more detail.

You must not:

  • resell or sublicense the Service, or give third parties raw or standalone API gateway access to it;

  • bypass or attempt to bypass rate limits, spending limits, billing or security measures;

  • use the Service to develop a competing model where the relevant Model Provider's terms prohibit that use; or

  • reverse engineer the Service, except to the extent applicable law permits despite this restriction.

You may build your own products and applications that use the Service, provided that you comply with these Terms and do not offer the Service itself as a standalone gateway.

7. AI outputs and content

7.1 Third-party outputs

Model Providers generate responses automatically. Outputs may be inaccurate, incomplete, out of date, offensive or similar to content generated for others. The same prompt may produce different outputs.

Check outputs before you use them, especially facts, code and legal, medical or financial content. Do not rely on an output as the sole basis for a decision affecting a person's health, safety, legal rights, finances or employment. You are responsible for your use of outputs and for complying with applicable law.

7.2 Products you build using the Service

If you use the Service in a chatbot, assistant or other product that interacts with people, you are responsible for that product and your obligations to its users. You must disclose interaction with an AI system and label AI-generated or manipulated content where applicable law requires it. You are also responsible for providing required privacy notices and having a lawful basis to send any personal data to us and the relevant Model Providers.

7.3 Your Content

"Your Content" means the inputs you submit, including prompts, files and parameters, and the outputs you receive.

As between you and us, you retain any rights you have in your inputs, and we assign to you any rights we may have in the outputs. Your rights in outputs remain subject to the relevant Model Provider's terms; some outputs may not qualify for copyright protection.

You grant us a limited right to process Your Content as needed to provide the Service, including forwarding inputs to a Model Provider, returning outputs, calculating charges and storing content if you enable request logging. We do not use Your Content to train models. You confirm that you have the rights and, where required, the permissions or lawful basis to submit Your Content, including personal data contained in it.

7.4 Request logging

By default, we do not store the content of your prompts or responses. We store request metadata, including the model, token counts, cost, timestamps, API key ID and IP address. If you enable request logging in your dashboard, we store the request and response content as described in our Privacy Policy. You can turn logging off at any time.

8. Model Providers

Model Providers are independent companies. Their handling of request data is subject to applicable data protection law, our contractual arrangements with them and the information in our Privacy Policy. DeepInfra's published terms provide for processing request content to return a response, with limited exceptions for authorised support, legal obligations, fraud, security and abuse investigations. A provider's involvement does not remove our responsibilities under our contract with you or the GDPR.

We may add, remove or replace models or Model Providers. A Model Provider may change, restrict or discontinue a model. We will try to give notice of a material removal when reasonably possible. Third-party outages, model changes and filtering may affect the Service. We remain responsible for our contractual obligations and for any statutory consumer remedies that apply to the Service we supply. A Model Provider may require us to restrict access to an account that breaches its policies; section 11 explains when we may do so.

9. Availability and changes to the Service

9.1 Availability and technical requirements

You need an internet connection, a supported web browser for the dashboard and software capable of making HTTPS API requests. The API uses an OpenAI-compatible interface; model-specific capabilities and limitations are described in the Service and its documentation. You are responsible for your own connectivity and integration.

We aim to provide a reliable Service, but do not guarantee uninterrupted availability and do not offer a separate contractual service-level guarantee under these Terms. We will try to announce maintenance in advance where it is likely to cause noticeable downtime. This does not reduce the standard of performance required by applicable law.

9.2 Consumer rights concerning digital services

If you are a consumer, the Service must meet the contractual and statutory requirements for digital services under the Estonian Law of Obligations Act and applicable EU consumer law. This includes applicable requirements concerning functionality, compatibility, security and necessary updates.

If the Service is not supplied or does not conform to those requirements, you may require supply or correction and, where the legal conditions are met, a proportionate price reduction or termination and reimbursement. Contact [email protected] to report the problem. We will bring the Service into conformity without charge, within a reasonable time and without significant inconvenience where required by law. The voluntary Refund Policy does not replace these remedies.

9.3 Changes to the Service

We may change the Service for valid reasons, such as maintaining security, meeting legal requirements, adapting to changes in third-party models or infrastructure, or improving functionality. For consumers, a change to an ongoing digital service beyond what is necessary to maintain conformity must comply with statutory conditions, must not impose additional costs and must be explained clearly.

If such a change adversely affects your access to or use of the Service by more than a minor amount, we will notify you reasonably in advance on a durable medium, describing the change, its timing and your right to terminate. You may terminate without charge within 30 days after receiving that notice or after the change takes effect, whichever is later, unless we allow you to keep the unchanged Service without additional cost and it remains conforming. Any reimbursement due following termination will be made within the statutory deadline, normally 14 days.

Business users may stop using the Service and request a refund of unused paid balance if a material change is unsuitable for them. Mandatory rights remain unaffected.

10. Intellectual property

We and our licensors own the Service, including its software, website, dashboard, documentation, brand and logos. These Terms give you a right to use the Service in accordance with them, but do not transfer ownership of it. Model names and logos belong to their respective owners. Identifying a model does not imply that its provider endorses or partners with Zelvimo.

You may send us feedback or suggestions, which we may use without an obligation to compensate you.

11. Suspension and termination

11.1 Closing your account

You may stop using the Service at any time and close your account through the dashboard or by emailing [email protected]. You may request a refund of your unused paid balance under our Refund Policy.

11.2 Suspension and termination by us

We may suspend or restrict your account or API keys, with notice where reasonably possible, if:

  • you breach these Terms, our Acceptable Use Policy or a Model Provider's applicable terms or usage policies;

  • we reasonably suspect fraud, payment abuse, a security threat or a sanctions issue;

  • a Model Provider, payment service provider or competent authority requires the restriction; or

  • the restriction is necessary to comply with applicable law.

We will explain the reason unless doing so would be unlawful or would compromise security. You may contest the decision by emailing [email protected]. We may terminate your account if the issue is serious or remains unresolved after a reasonable opportunity to remedy it, where such an opportunity is appropriate.

We may also end the Service, or end your account without a specific reason, by giving at least 20 calendar days' notice. In that case, we will refund your unused paid balance.

11.3 Remaining balance

We do not automatically forfeit paid balance because an account is suspended or terminated. Any deduction must have a lawful basis and relate to an amount actually due from you, such as a valid chargeback or a substantiated claim that may lawfully be set off. We will explain and document a deduction unless the law prevents disclosure. You may dispute it, and your consumer remedies remain unaffected. We may withhold or freeze amounts where required by law. We will refund any remaining unused paid balance in accordance with our Refund Policy. Unused welcome credit ends when the account closes.

12. Sanctions and export control

You must not use the Service in breach of sanctions or export-control measures applicable in Estonia, including applicable EU restrictive measures, United Nations sanctions implemented under applicable law and the Estonian International Sanctions Act. You must not use the Service on behalf of, or for the benefit of, a restricted person or entity where that use is prohibited.

Restrictions binding a Model Provider or payment service provider may also affect availability, to the extent permitted by applicable law. The locations where we do not offer the Service are listed in section 2. We may screen accounts and payments and refuse, suspend or terminate access where necessary to comply with applicable restrictions.

13. Warranties and disclaimers

We provide the Service with reasonable skill and care. To the extent permitted by applicable law, the Service and outputs are otherwise provided "as is" and "as available". We do not guarantee that outputs will be accurate, suitable for a particular purpose or free from third-party rights.

Nothing in this section affects statutory rights or remedies that cannot lawfully be excluded, including applicable consumer rights relating to digital services.

14. Liability

Nothing in these Terms excludes or limits liability that cannot lawfully be excluded or limited, including liability for death or personal injury caused by negligence, fraud, and any other liability that applicable law protects.

For business users, to the extent permitted by applicable law, we are not liable for indirect or consequential losses or for loss of profits, revenue, business opportunities or goodwill. These Terms do not set an overall monetary cap on our liability.

For consumers, we are responsible for losses that are a foreseeable result of our breach of these Terms or failure to use reasonable care. We are not responsible for losses that were not foreseeable or for business losses arising from a consumer's use of the Service. No monetary cap applies to our liability to consumers under these Terms.

The limitations in this section do not exclude our responsibility for the Service we contract to supply, statutory digital-service remedies or liability for persons engaged to perform our obligations where applicable law makes us responsible.

15. Indemnity for business users

If you are a business user, you will compensate us for reasonable losses and costs, including reasonable legal fees, arising from a third-party claim that Your Content or your use of the Service or outputs violates these Terms, a Model Provider's applicable policy or the law, or infringes another person's rights. We will notify you promptly of the claim and allow you to participate in its defence.

16. Privacy

We handle personal data as described in our Privacy Policy. If you submit personal data relating to other people, you are responsible for ensuring that you have the necessary authority and lawful basis to do so and for providing any notices required by applicable law. Where we process personal data on a business customer's behalf, a data processing agreement meeting Article 28 GDPR must be in place before that data is submitted. International transfers must also comply with Chapter V GDPR. Contact [email protected] to arrange the required terms. The Privacy Policy and these Terms alone do not replace a data processing agreement.

17. Changes to these Terms

We may update these Terms to reflect changes to the Service, Model Providers or applicable law. We will publish the new version with an updated effective date. If a material change negatively affects you, we will notify you by email or in the dashboard at least 30 calendar days before it takes effect, unless a legal, security or Model Provider requirement makes earlier implementation necessary. Where practicable, we will give notice as soon as reasonably possible in those circumstances.

If you do not accept a change, you may close your account before it takes effect and request a refund of your unused paid balance. Any contractual amendment takes effect only to the extent permitted by law. Where your express agreement is required, we will obtain it; continued use alone does not replace that agreement. Changes do not remove accrued rights or the consumer protections in section 9.

18. Governing law, complaints and disputes

18.1 Governing law and courts

These Terms are governed by the laws of the Republic of Estonia and applicable European Union law. For business users, Harju County Court in Estonia has exclusive jurisdiction, unless a mandatory jurisdiction rule requires otherwise.

If you are a consumer, this choice of law does not deprive you of the protection of mandatory consumer laws that apply in your country of habitual residence. You may bring proceedings in the courts available to you under applicable consumer jurisdiction rules, including the courts of your place of residence where those rules provide that right. We may bring proceedings against an EU consumer only in the courts permitted by those rules.

18.2 Complaints

Send complaints to [email protected], stating your account email, the issue and the remedy you seek. We will respond to a consumer complaint in writing within 15 days of receipt. If we cannot resolve it within that period, we will explain the reason and give a new reasonable response deadline, as permitted by Estonian law. Statutory refund and data protection deadlines apply separately and are not extended by this procedure.

18.3 Out-of-court resolution

An eligible consumer resident in Estonia may refer an unresolved dispute with Zelvimo OÜ to the Consumer Disputes Committee at the Estonian Consumer Protection and Technical Regulatory Authority (TTJA). Information and application instructions are available at www.ttja.ee/en/consumer-disputes-committee. Cross-border EU/EEA consumers may seek help from the European Consumer Centre in their country. These options do not prevent either party from exercising its rights in court.

19. General

  • Entire agreement. These Terms and the policies they incorporate form the agreement between you and us about the Service.

  • Transfer. A transfer of this agreement must comply with applicable law and must not reduce your contractual or statutory rights. We will obtain your consent where required. You may not transfer your account without our written consent.

  • Severability. If a provision is invalid or unenforceable, the remaining provisions continue to apply.

  • No waiver. A delay in enforcing a right does not waive that right.

  • Events outside our control. We are not responsible for a delay or failure caused by events outside our reasonable control, including Model Provider outages, network failures, new sanctions or legal restrictions, except where applicable law provides otherwise.

  • Language. The English version of these Terms governs if a translation differs, unless mandatory law requires otherwise.

  • Notices. We may send notices to your account email address or through the dashboard. You may send legal notices to [email protected].

20. Contact

Zelvimo OÜ
Operator of Zelvimo
Registry code: 17582420
Registered office: Harju maakond, Tallinn, Haabersti linnaosa, Paldiski mnt 199a-4, 13517, Estonia
General enquiries and legal notices: [email protected]