Terms of Service
Last updated: 14 October 2026
1. Who we are and what these terms cover
These terms govern the contract between you (the "User") and the operator of LU (the "Provider"). The Provider’s full legal details appear in the Impressum.
They cover the lu-labs.ai website, your account, the hosted cloud service, personal API keys, and the hosted features you reach from the LU apps for desktop, Android and iPhone (together the "Service").
The LU apps for desktop, Android and iPhone are open-source software. Their source code is licensed under the GNU Affero General Public License, version 3, and that licence, not these terms, governs your rights in the applications’ code. Nothing in these terms restricts those rights. Using an application only with models on your own device, without an account, does not require you to accept these terms.
2. Eligibility and your account
- You must be at least 18 years old to create an account or use the Service.
- An account is for one natural person. Give accurate details when you register and keep them up to date.
- Keep your password and API keys confidential. You are responsible for activity under your account unless you are not at fault for it. Tell us without delay at hello@lu-labs.ai if you believe your account or a key has been compromised.
3. The Service
LU consists of the lu-labs.ai web service, the LU desktop application and the LU app for Android and iPhone. The applications run AI models on the User’s own device and can optionally connect to the Provider’s hosted cloud. The Service is provided as-is, with no uptime SLA.
For the LU app downloaded from the Apple App Store or Google Play, the terms of that store apply in addition to these terms.
Hosted requests run on managed infrastructure operated by our infrastructure partners. The catalog of hosted models, their credit cost and the available features can change. Features marked as beta or experimental may change or be withdrawn at any time and can be less reliable than the rest of the Service.
Local execution requires compatible hardware and models that you download yourself. Models and local backends from third parties are subject to their own licences, and we are not responsible for them.
4. Licence to use the Service
For each paid subscription, the User receives a non-transferable, non-exclusive licence to use the Service for one natural person. The licence covers an unlimited number of desktop-app installations belonging to that person. Account-sharing is not permitted.
The Self-Host tier is provided free of charge under the same per-person scope for the account and the hosted features it includes. The desktop app runs on the User’s own hardware; the hosted cloud service remains the Provider’s.
You may use your personal API key in your own tools and applications. You may not resell, sublicense or share access to the Service, or offer it to third parties as a service of your own, without our written agreement.
5. Plans, credits and limits
The plans, their prices and what they include are described on the pricing page as it stands at the moment of purchase. Hosted model access is shared by paid plans and credit packs.
- Paid plans carry a monthly credit grant, a daily Flash allowance and request limits. These limits apply to every plan. No plan is an unlimited-use promise.
- Credit packs are one-time purchases. Credits from a pack do not expire and remain on your account if your plan ends.
- The number of credits a request costs is shown in the app. It can change for future requests.
- The LU app from the Apple App Store or Google Play sells no plans and no credits inside the app.
- Credits are tied to your account. They have no cash value, cannot be transferred or sold, and are refunded only as set out in sections 7 and 14 or where the law requires it.
6. Prices, payment and renewal
Prices are shown in euro. Information on value-added tax appears in the Impressum. Payments are processed by our payment service providers; we do not store your full card details.
Paid plans renew automatically at the end of each billing period, monthly or yearly as you chose, at the price listed on the pricing page at the moment of purchase. The User may cancel at any time via email or from the account settings; cancellation takes effect at the end of the current billing period and the Service remains available until then. Prices may change with at least 30 days’ advance notice by email; the User may cancel before the new price applies.
If a payment fails or is reversed, we may pause the paid features of your account after telling you by email, until the amount is settled. While a payment dispute about a credit pack is open, the unused credits from that pack are held back. They are released again if the dispute is decided in our favour.
7. Right of withdrawal
EU consumers may withdraw within 14 days of purchase without giving reasons and receive a full refund. Email hello@lu-labs.ai.
The period runs for 14 days from the day of the purchase. To withdraw, send us a clear statement that you withdraw from the contract, by email to the address above or by post to the address in the Impressum. It is enough that you send it before the period ends. You can use this wording: "I hereby withdraw from the contract for the following service, ordered on [date]: [plan or credit pack]. Name, account email address, date."
We refund every payment received for the withdrawn purchase without undue delay and at the latest within 14 days of receiving your statement, using the payment method you paid with and at no charge to you. Credits granted by the withdrawn purchase that you have not yet used are removed from your account. Cancelling a subscription and requesting a refund are separate actions.
8. Your content
You keep all rights in what you send to the Service. As between you and us, what the Service generates for you belongs to you to the extent the law allows. We do not promise that an output is unique or that it can be protected by copyright. The licences of the models you use can place conditions on their outputs, and you are responsible for meeting them.
You allow us to process what you send only as far as needed to produce your result and to operate the Service. We do not train models on your data. How we handle personal data is described in the Privacy Policy.
9. AI-generated content
The User is solely responsible for content generated through LU. The Provider is a software tool, not a publisher, and exercises no editorial control over generated output.
Outputs of AI models can be wrong, incomplete or misleading. Check them before you rely on them. They are not legal, medical, financial or other professional advice.
10. Acceptable use
You must not use the Service:
- in a way that breaks the law that applies to you or to us;
- to create, request, store or share content that exploits or abuses minors, including any erotic or intimate depiction of a person who is or appears to be under 18, whether real, fictional or AI-generated;
- with the name, image, voice or likeness of a real person without that person’s consent, in particular for intimate depictions or to deceive others about who is speaking or shown;
- where an error in the output could lead to death, serious injury or serious damage to property or the environment;
- in breach of the usage rules that the makers of the models you use have published for them;
- to get around limits, allowances or safeguards, for example with several accounts or by sharing an account or a key;
- to disrupt the Service, to test its security without our written permission, or to access data that is not yours.
Automated safeguards can decline a request, and the hosted service can decline a request that one of our infrastructure partners declines. The rule on minors is enforced on every request, whatever your account settings. Where the law obliges us to, we report illegal content to the competent authorities.
11. Changes to the Service
We may change, add or remove features and models, for example for technical, security or legal reasons or because a model is no longer available to us. If a change materially reduces a paid plan, we tell you by email in advance where that is reasonably possible, and you may cancel as described in section 6.
Should LU ever be discontinued, the Provider will give at least six months notice, refund unused pre-paid time pro rata, and provide a full data export. The desktop app will keep working with local backends after that; only the cloud service ends.
12. Liability
We are liable without limit for intent and gross negligence, for injury to life, body or health, under the German Product Liability Act, and where we have given a guarantee.
For slight negligence we are liable only for the breach of an essential obligation, meaning one that makes the proper performance of the contract possible in the first place and on which you may regularly rely. In that case our liability is limited to the damage that was foreseeable and typical for this kind of contract when it was concluded. Any further liability is excluded. Mandatory consumer protections under German law remain unaffected.
13. Claims by third parties
If a third party brings a claim against us because you used the Service in breach of section 10 and you are at fault for that breach, you indemnify us against the claim and the reasonable costs of defending it. We tell you about such a claim without delay and give you the opportunity to respond.
14. Suspension and termination
The User may delete their account at any time from the account settings or via email.
The Provider may suspend the User’s account for material breach of these terms (e.g. license-sharing, abuse, or a breach of section 10). Where it is reasonable we warn you first and give you the chance to put things right. For serious breaches we may suspend or end the contract immediately. If we end the contract for your breach, there is no refund beyond what the law requires.
We may also end the contract without a reason with at least 30 days’ notice by email, effective at the end of a billing period. In that case we refund unused pre-paid time pro rata and the unused part of credit packs you bought.
15. Changes to these terms
We may change these terms for a valid reason, such as a change in the law, a new feature or a security need. We tell you by email at least 30 days before a change takes effect. If you object within that time, the previous terms continue to apply to you, and either side may end the contract at the end of the current billing period. Changes that would alter the core of what you pay for or what you receive apply only if you agree to them.
16. Governing law, venue and disputes
German law applies. Venue is the seat of the Provider as listed in the Impressum, if you are a merchant, a legal entity under public law or a special fund under public law. If you are a consumer living in another country of the European Union, you keep the protection of the mandatory rules of the country where you live.
We are neither obliged nor willing to take part in dispute resolution proceedings before a consumer arbitration board.
17. Final provisions
If a provision of these terms is or becomes invalid, the remaining provisions stay in force. These terms are written in English. Questions about them go to hello@lu-labs.ai.