iXentBench is a deterministic benchmarking platform for evaluating reasoning in artificial intelligence systems, operated by iXent Games S.L.(trading as iXentLabs), a company incorporated in Spain, with registered office at C/ Tomovi 55, Sant Miquel de Banyeres, 43711 Tarragona, Spain, and tax identification number B65908410. Contact: contact@ixentlabs.com.
These Terms of Service (the “Terms”) form a binding agreement between you and iXent Games S.L. and govern your access to and use of the website at ixentlabs.com, the iXentBench command-line interface (CLI), the evaluation environments (Official Benchmark, Laboratory, Arena, Playroom), the Replay Auditor, the certification system and any related service (together, the “Platform”).
By creating an account, redeeming an access code, installing the CLI or otherwise using the Platform, you accept these Terms. If you do not accept them, do not use the Platform.
These Terms are complemented by our Privacy Policy, our Cookie Policy, the Non-Commercial Source License and the Data Addendum. In case of conflict between these Terms and the Data Addendum regarding the use of your submitted content, the Data Addendum prevails.
You must be at least 18 years old and have full legal capacity to enter into contracts. By using the Platform you represent that you meet these requirements. If you are acting on behalf of an organisation, you represent that you are authorised to bind that organisation, and “you” refers to both you and that organisation.
We do not knowingly provide the Platform to minors. If we become aware that an account belongs to a person under 18, we will suspend it and delete the associated data.
The Platform is currently offered on an invitation-only basis. Access requires authentication with a Google account and, where applicable, redemption of a single-use access code or admission from the waiting list. We may grant, limit, suspend or withdraw access at our discretion during this phase.
You are responsible for all activity carried out under your account and for keeping your credentials secure. Accounts are personal and may not be shared, sold or transferred without our written consent.
You are solely responsible for any third-party API keys you use with the CLI (“BYOK”). Those keys are read locally on your machine and are never transmitted to or stored by us. You are responsible for all costs incurred with your model providers.
You agree not to:
You must not include any personal data — your own or that of third parties — in prompts, strategy files, commands, reasoning text, nicknames or any other free-text field. This includes names, email addresses, telephone numbers, postal addresses, identification numbers, credentials and any other information capable of identifying a natural person.
This is a strict obligation. If you breach it, you are responsible for the consequences of that breach, and we may remove the affected content and suspend your account. This clause does not diminish our own obligations as data controller under applicable data protection law.
You retain all intellectual property rights in the prompt injections and strategy files you create and submit (“Your Content”). Nothing in these Terms transfers ownership of Your Content to us. You remain free to publish, reuse or license Your Content elsewhere, including in academic publications.
To run the service, you grant us a worldwide, non-exclusive, royalty-free licence to host, store, reproduce, transmit and process Your Content solely for the purpose of operating the Platform: executing your evaluations, generating replay and match records, displaying results back to you, maintaining backups, ensuring security and integrity, and complying with legal obligations.
This licence is limited to those purposes. It terminates when you delete Your Content or close your account, except for copies retained in backups for their ordinary retention period or where retention is required by law.
Where you give that consent, it applies to two distinct uses, and in both cases Your Content is anonymised before it leaves the Platform:
A licence granted under the Data Addendum over the text of Your Content is an intellectual property licence and, once granted and exercised, is perpetual and irrevocable in respect of datasets already anonymised and distributed. This does not affect your rights over your personal data, which remain fully exercisable at any time — including access, rectification, erasure, restriction, portability, objection and withdrawal of consent — as described in our Privacy Policy.
In practice: withdrawing consent stops any future inclusion of Your Content and removes the link between you and your submissions, but it cannot recall datasets already anonymised and distributed, since those no longer contain personal data and can no longer be traced back to you.
The Platform, the Caps i Caps© game and its rules, the deterministic rule engine, the system prompt architecture, the STAR-XAI evaluation methodology, the leaderboards, the visual design, the source code, the trade marks “iXentBench” and “iXentLabs”, and all associated documentation are and remain the exclusive property of iXent Games S.L. and are protected by intellectual property law.
Except for the limited rights expressly granted here and in the Non-Commercial Source License, no right or licence is granted to you, whether by implication, estoppel or otherwise.
The Playroom operates differently from Laboratory and Arena. In the Playroom you do not author prompt content: you activate predefined micro-prompts supplied by us, move by move, and no strategy files are used.
The micro-prompts, their wording and taxonomy, the Playroom game logic, and the resulting match records (including the .jsonl files in which each activated micro-prompt is linked to its move) are the exclusive property of iXent Games S.L. You acquire no intellectual property right of any kind over them.
You receive only a limited, personal, non-transferable and revocable licence to use the micro-prompts within the Playroom interface for the duration of your session. We may use, analyse, publish and commercially exploit Playroom match records without any further licence from you. Any personal data associated with those records remains subject to our Privacy Policy.
Results of Official Benchmark evaluations are recorded in the public leaderboard, identified by model and evaluation metadata. Laboratory results are stored privately and are not publicly ranked.
Where you request a certificate, you separately confirm that the certified record — including the model evaluated, level, score, token metrics and STAR-XAI dimensions — becomes a permanent, cryptographically signed and publicly verifiable record published at verify.ixentlabs.com. Certificates do not include your name, email or contact details. Certification is voluntary and irreversible: once issued, a certificate cannot be withdrawn, because its value depends on its immutability.
Scores are produced by a deterministic engine. We do not warrant that any score reflects the general capability of a model beyond the specific conditions of the evaluation.
Parts of the Platform are currently provided free of charge under invitation. We may introduce paid plans, credits and paid Playroom access.
If you are a consumer resident in the European Union, you normally have 14 days to withdraw from a distance contract. Because the Platform supplies digital content and services with immediate access, when you purchase you will be asked to expressly request that supply begins immediately and to acknowledge that you thereby lose your right of withdrawal once performance has begun, in accordance with Directive 2011/83/EU and Spanish Royal Legislative Decree 1/2007. If you do not give that acknowledgement, supply will begin after the 14-day period.
The Platform is under active development and is provided on an “as is” and “as available” basis. We do not warrant uninterrupted or error-free operation, the permanence of any evaluation, replay or leaderboard entry, or that the Platform will meet your particular requirements. Features described as “coming soon” create no obligation to deliver them.
Nothing in these Terms excludes any warranty that cannot be excluded under applicable law, including the statutory rights of consumers.
To the fullest extent permitted by law, we are not liable for indirect or consequential loss, loss of profits, loss of business opportunity, loss of data, or costs incurred with third-party model providers arising from your use of the Platform.
Our total aggregate liability arising out of or in connection with these Terms is limited to the greater of (a) the amounts you paid us in the twelve months preceding the event giving rise to the claim, or (b) one hundred euros (€100).
We do not exclude or limit liability for death or personal injury caused by negligence, for fraud or fraudulent misrepresentation, or for any other liability that cannot lawfully be excluded. If you are a consumer, your statutory rights are unaffected.
Our processing of personal data is described in our Privacy Policy. Where processing is based on your consent — including the optional uses described in the Data Addendum — you may withdraw that consent at any time, without affecting the lawfulness of processing carried out before withdrawal.
You may stop using the Platform and request deletion of your account at any time. We may suspend or terminate your access if you breach these Terms, if we reasonably suspect manipulation of evaluations, or if required by law. Where the breach is not serious and is capable of remedy, we will give you notice and a reasonable opportunity to remedy it.
Clauses that by their nature survive termination — including sections 5.4, 6, 7, 10 and 14 — remain in force.
We may amend these Terms. We will publish the updated version on this page with a new version number and date, and where the change is material we will give reasonable prior notice by email or in-product notice. Continued use after the change takes effect constitutes acceptance. If you do not accept a material change, your remedy is to stop using the Platform and close your account.
These Terms are governed by Spanish law.
Business, professional and institutional users. If you use the Platform in the course of a business, profession or academic institution, the courts of Tarragona (Spain) have exclusive jurisdiction over any dispute arising out of or in connection with these Terms, and you expressly waive any other forum to which you might otherwise be entitled.
Consumers. If you use the Platform as a consumer, the previous paragraph does not apply to you. You retain the right to bring proceedings in the courts of your place of residence, and may only be sued there, in accordance with Regulation (EU) 1215/2012 and Spanish consumer protection law. Nothing in these Terms deprives you of the protection of mandatory provisions of the law of your country of residence.
Alternative dispute resolution. We are not currently adhered to any consumer arbitration scheme or out-of-court dispute resolution body. If you are a consumer and wish to seek an out-of-court resolution, the European Commission maintains a list of certified dispute resolution bodies in the Member States at consumer-redress.ec.europa.eu. In Spain you may also contact the consumer authorities of your Autonomous Community.
If any provision is held invalid or unenforceable, it will be modified to the minimum extent necessary or severed, and the remaining provisions stay in force. Our failure to enforce a right is not a waiver of it. You may not assign these Terms without our written consent; we may assign them in connection with a merger, acquisition or transfer of assets, provided your rights are not reduced.
These Terms, together with the documents referenced in section 1, constitute the entire agreement between you and us regarding the Platform.
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