Last Updated and Effective: August 22, 2026
PLEASE READ THIS TERMS OF USE AGREEMENT (THE “TERMS”) CAREFULLY. THESE TERMS CONSTITUTE A LEGALLY BINDING AGREEMENT BETWEEN YOU AND THE MAINTAINERS (AS DEFINED BELOW) AND GOVERN YOUR ACCESS TO AND USE OF DESLOPARENA.COM, INCLUDING ITS LEADERBOARDS, ACCOUNTS, VOTING AND SUBMISSION FEATURES, APPLICATION PROGRAMMING INTERFACES, DOWNLOADS, DATASETS, AND ALL RELATED CONTENT, FUNCTIONALITY, AND SERVICES (COLLECTIVELY, THE “SERVICE”).
The Service is an independent, self-hosted research project operated jointly by Kirill Skobelev, Eric Fithian, and Giulio Frey (each, a “Maintainer” and collectively, the “Maintainers,” “DeSlop Arena,” “we,” “us,” or “our”). The Maintainers are based in Chicago, Illinois, United States. As used herein, “you” and “your” mean the individual accessing or using the Service and, if applicable, the entity on whose behalf such individual accesses or uses the Service.
NOTICE REGARDING USER CONTENT AND DATA RIGHTS. SECTION 5 CONTAINS A MATERIAL GRANT OF RIGHTS. IF YOU SUBMIT ANY VOTE, RESULT, PROMPT, RESPONSE, EVALUATION, FEEDBACK, OR OTHER USER CONTENT, YOU GRANT THE MAINTAINERS A BROAD, PERPETUAL, IRREVOCABLE, TRANSFERABLE, AND SUBLICENSABLE LICENSE TO USE AND COMMERCIALIZE THAT USER CONTENT FOR ANY LAWFUL PURPOSE, INCLUDING CREATING, LICENSING, AND SELLING DATASETS AND TRAINING, TESTING, EVALUATING, AND IMPROVING ARTIFICIAL-INTELLIGENCE OR MACHINE-LEARNING MODELS, WITHOUT COMPENSATION TO YOU. YOU RETAIN ONLY SUCH OWNERSHIP RIGHTS IN YOUR USER CONTENT AS YOU MAY OTHERWISE POSSESS.
NOTICE REGARDING DISCLAIMERS AND LIMITATIONS OF LIABILITY. SECTIONS 13 AND 14 DISCLAIM WARRANTIES AND MATERIALLY LIMIT THE LIABILITY OF THE MAINTAINERS AND CERTAIN RELATED PARTIES.
These Terms apply irrespective of whether you register an account. BY ACCESSING, BROWSING, VIEWING, OR OTHERWISE USING ANY PORTION OF THE SERVICE—INCLUDING BY SUBMITTING A VOTE OR OTHER CONTENT OR BY ACCESSING AN API OR DOWNLOAD—AFTER THESE TERMS OR A HYPERLINK TO THEM HAVE BEEN MADE REASONABLY AVAILABLE TO YOU, YOU ACKNOWLEDGE THAT YOU HAVE READ AND UNDERSTOOD THESE TERMS AND AGREE TO BE LEGALLY BOUND BY THEM. IF YOU DO NOT AGREE TO THESE TERMS, YOU SHALL NOT ACCESS OR USE THE SERVICE.
Creating an account, affirmatively selecting an acceptance control, or submitting any vote or other User Content constitutes an additional manifestation of your assent to these Terms. You consent to the use of electronic records to evidence your acceptance, including records identifying the applicable version of these Terms and the date and time of acceptance.
If you access or use the Service on behalf of any corporation, partnership, association, governmental body, or other legal entity, you represent and warrant that you possess all requisite authority to bind such entity to these Terms, in which event “you” and “your” shall refer to both you and such entity.
You must be at least 18 years of age to access or use the Service. By accessing or using any portion of the Service, whether or not you register an account, you represent and warrant that you are at least 18 years of age and are legally competent to enter into these Terms.
The Service is not directed to minors. No person under 18 may access or use the Service, register an account, submit votes or other User Content, or provide personal information. If we obtain actual knowledge that a user is under 18, we may immediately suspend or terminate the applicable access or account and delete associated personal information and submissions to the extent required by applicable law.
Certain features of the Service may require registration of an account (an “Account”). You agree to provide information that is accurate, current, and complete; to maintain the confidentiality and security of your Account credentials; and to notify us promptly of any actual or suspected unauthorized access to or use of your Account. To the maximum extent permitted by applicable law, you are responsible for all activity occurring through your Account.
We may use third-party infrastructure, hosting, authentication, payment, analytics, or other service providers. Your use of third-party services may also be governed by their terms and privacy policies. We are not responsible for third-party services or their availability.
We reserve the right to reject, suspend, restrict, or terminate any Account or access to the Service if we determine, in our sole but reasonable discretion, that such action is necessary or appropriate to protect the Service, its data, its users, the integrity of research results, or the Maintainers; to enforce these Terms; or to comply with applicable law. Without limiting the foregoing, because the Service is experimental, we may discontinue any Account or feature at any time and without liability, subject to applicable law.
The Service collects and analyzes user-submitted votes, results, and related information to create leaderboards, rankings, scores, datasets, and research outputs. Results may be incomplete, statistically uncertain, nonrepresentative, manipulated, outdated, or affected by changes in models, users, prompts, methodologies, or sample sizes.
Rankings and scores are provided for experimental and informational purposes only. They are not certifications, guarantees, professional advice, or endorsements. You are solely responsible for decisions made in reliance on the Service.
We may change methodologies, labels, eligibility rules, weighting, scoring, rankings, datasets, interfaces, or publication practices at any time. We may correct, exclude, reweight, or remove data that we believe is erroneous, fraudulent, duplicated, unsafe, legally problematic, or inconsistent with research integrity.
“User Content” means anything you submit, upload, transmit, generate, vote on, or otherwise make available through the Service, including votes, preferences, prompts, model outputs, test results, evaluations, labels, rankings, comments, feedback, files, and associated submission metadata. User Content does not include private authentication credentials. Account information such as a login email address is handled as personal information under our Privacy Policy and is not licensed for sale merely because you accept these Terms.
As between you and the Maintainers, and subject to the license granted in Section 5.2, you retain any ownership rights you may possess in your User Content. For the avoidance of doubt, individual facts, votes, preferences, measurements, and other data points may not be eligible for protection under intellectual-property law.
By submitting, transmitting, generating, or otherwise making available any User Content through or in connection with the Service, you hereby grant to the Maintainers and their respective successors, assigns, licensees, and sublicensees, to the fullest extent permitted by applicable law, a worldwide, perpetual, irrevocable, nonexclusive, transferable, sublicensable through multiple tiers, royalty-free, and fully paid-up right and license under all intellectual-property, proprietary, privacy, publicity, and similar rights that you own or control to:
The foregoing license applies in all formats, media, and distribution channels now known or hereafter devised and for both commercial and noncommercial purposes. For the avoidance of doubt, the license authorizes the Maintainers and their sublicensees to exercise the licensed rights without payment, accounting, notice, attribution, or further consent, except to the extent expressly required by applicable law.
To the extent permitted by law, you waive, and agree not to assert, moral rights or similar rights in User Content. Where a waiver is not permitted, you agree not to exercise those rights in a manner that interferes with the licensed uses above.
The license granted in this Section 5.2 is irrevocable and shall survive closure or deletion of an Account, any request to remove User Content, and any expiration or termination of these Terms. Notwithstanding the foregoing, where applicable privacy law requires deletion of personal information, we will process valid requests as required by such law; provided, however, that we may retain and continue to use information that has been lawfully de-identified or aggregated such that it no longer constitutes personal information, as well as information that we are otherwise permitted or required by law to retain.
You represent and warrant that:
YOU SHALL NOT SUBMIT ANY MATERIAL THAT YOU ARE NOT LEGALLY ENTITLED TO DISCLOSE OR THAT YOU DO NOT WISH TO HAVE USED, PUBLISHED, LICENSED, SOLD, OR INCORPORATED INTO DATASETS OR ARTIFICIAL-INTELLIGENCE OR MACHINE-LEARNING TRAINING PROCESSES.
Feedback and suggestions are voluntary and are not confidential. You grant us the same license described in Section 5.2 for any feedback you provide.
Except for User Content and third-party materials, the Maintainers own all right, title, and interest in the Service and its materials, including its software, design, branding, documentation, research methodologies, scoring systems, selection and arrangement of data, annotations, rankings, aggregate statistics, and derived or de-identified datasets (collectively, “Project Materials”), to the extent those materials are protectable by law.
Except for the limited rights expressly granted under these Terms or a separate written license accompanying particular software, data, or materials, no right, title, license, or interest is granted by implication, estoppel, or otherwise. All rights not expressly granted are reserved by the Maintainers and their licensors.
Subject to your continuing compliance with these Terms, all applicable documentation and rate limits, and any separate license displayed with a particular dataset, the Maintainers grant you a limited, revocable, nonexclusive, nontransferable, and nonsublicensable license to access and use data intentionally made available through an authorized public download or API solely for noncommercial research, provided that you:
Access through an API or download does not transfer ownership. Automated scraping, crawling, extraction, or bulk collection outside an interface we intentionally provide for that purpose is prohibited unless we give prior written permission.
In the event of an express conflict between this Section and a separate license accompanying specific data, the separate license shall control solely with respect to such data. Any commercial use, commercial model training, redistribution, or other use outside the scope of the foregoing limited license requires our prior written authorization at contact@desloparena.com and may be conditioned upon execution of a separate agreement and payment of applicable fees.
We may modify, rate-limit, suspend, or discontinue any API, download, dataset, or access credential at any time. We make no representation or warranty regarding continued access, compatibility, completeness, or retention of any data.
You may not, and may not help anyone else to:
We may investigate suspected violations and remove or exclude accounts, votes, submissions, or data. We have no obligation to monitor or preserve User Content.
Our separate Privacy Policy explains how we collect, use, disclose, and retain personal information, including account email addresses and usernames. By using the Service, you acknowledge the practices described in the Privacy Policy.
User Content may be made publicly available and may be included in datasets that are published, licensed, sold, or used for model training. You shall not include personal or sensitive information in any submission. To the extent User Content contains personal information, the license in Section 5 applies subject to applicable privacy law and the Privacy Policy.
If you believe material on the Service infringes your intellectual-property rights, email contact@desloparena.com with:
We may remove or restrict content and terminate repeat infringers where appropriate. Submitting a knowingly false complaint may create legal liability.
The Service may offer paid features, data licenses, API plans, sponsorships, advertisements, or other commercial arrangements. All applicable prices, fees, and supplemental terms shall be disclosed prior to purchase. Unless expressly provided otherwise in applicable supplemental terms, all fees are due and payable when charged and are noncancelable and nonrefundable, except to the extent otherwise required by applicable law.
You are responsible for applicable taxes and for providing accurate billing information. We may use third-party payment processors and do not directly control their services.
Advertising or sponsorship does not necessarily constitute our endorsement of a third party. We are not responsible for third-party products, services, claims, websites, or transactions.
The Service is experimental and is subject to continuing modification. To the maximum extent permitted by applicable law, we reserve the right, at any time and with or without notice, to add, modify, suspend, restrict, or discontinue any portion of the Service, temporarily or permanently. We shall have no obligation to preserve Accounts, User Content, rankings, datasets, API compatibility, or access to the Service.
You may stop using the Service at any time and may request account closure by emailing contact@desloparena.com. Account closure does not revoke the license granted for User Content and does not require removal of nonpersonal, de-identified, aggregate, published, or previously sublicensed data, except where applicable law requires otherwise.
All provisions that by their nature should survive expiration or termination—including Sections 5 through 7 and 13 through 18—shall so survive.
TO THE FULLEST EXTENT PERMITTED BY LAW, THE SERVICE, PROJECT MATERIALS, USER CONTENT, DATASETS, APPLICATION PROGRAMMING INTERFACES, DOWNLOADS, RANKINGS, AND RESULTS ARE PROVIDED “AS IS” AND “AS AVAILABLE,” WITH ALL FAULTS AND WITHOUT WARRANTIES OF ANY KIND.
The Maintainers disclaim all express, implied, and statutory warranties, including warranties of accuracy, completeness, reliability, title, noninfringement, merchantability, fitness for a particular purpose, quiet enjoyment, security, and uninterrupted or error-free operation.
We do not warrant that data or results are scientifically valid, unbiased, reproducible, representative, current, or suitable for any use. We do not warrant that User Content is lawful or that we have independently verified its ownership, accuracy, or provenance. You assume all risk arising from your access to or reliance on the Service.
Some jurisdictions do not allow certain warranty exclusions, so some exclusions may not apply to you.
TO THE FULLEST EXTENT PERMITTED BY LAW, THE MAINTAINERS AND THEIR CONTRIBUTORS, CONTRACTORS, AGENTS, SERVICE PROVIDERS, LICENSORS, SUCCESSORS, AND ASSIGNS WILL NOT BE LIABLE FOR ANY INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, PUNITIVE, OR CONSEQUENTIAL DAMAGES; LOSS OF PROFITS, REVENUE, GOODWILL, DATA, OR USE; BUSINESS INTERRUPTION; COST OF SUBSTITUTE SERVICES; OR DAMAGES ARISING FROM UNAUTHORIZED ACCESS, DATA LOSS, USER CONTENT, THIRD-PARTY SERVICES, RESEARCH RESULTS, OR RELIANCE ON THE SERVICE, UNDER ANY THEORY OF LIABILITY, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
TO THE FULLEST EXTENT PERMITTED BY LAW, THE TOTAL AGGREGATE LIABILITY OF THE MAINTAINERS AND THE OTHER PARTIES LISTED ABOVE FOR ALL CLAIMS ARISING OUT OF OR RELATING TO THE SERVICE OR THESE TERMS WILL NOT EXCEED THE GREATER OF (A) THE AMOUNT YOU PAID TO DESLOP ARENA FOR THE SERVICE DURING THE 12 MONTHS BEFORE THE EVENT GIVING RISE TO THE CLAIM OR (B) US $100.
These limitations do not exclude liability that cannot legally be excluded or limited. Some jurisdictions do not allow certain liability limitations, so some limitations may not apply to you.
To the fullest extent permitted by law, you agree to defend, indemnify, and hold harmless the Maintainers and their contributors, contractors, agents, service providers, licensors, successors, and assigns from claims, liabilities, damages, judgments, losses, and reasonable costs and legal fees arising from or relating to:
We reserve the right, at our own expense, to assume the exclusive defense and control of any matter otherwise subject to indemnification by you, in which event you shall reasonably cooperate in asserting available defenses. You shall not settle any claim in a manner that admits fault by, imposes liability or obligations upon, or otherwise adversely affects any indemnified party without that party’s prior written consent.
These Terms and any dispute arising out of or relating to them or the Service are governed by the laws of the State of Illinois, without regard to conflict-of-law principles.
You and the Maintainers consent to exclusive jurisdiction and venue in the state courts located in Cook County, Illinois, and the federal courts for the Northern District of Illinois. Nothing in this Section prevents either party from seeking emergency or injunctive relief in a court with appropriate jurisdiction. Mandatory consumer-protection rights that apply where you live remain unaffected.
We may update these Terms. When we do, we will post the revised Terms and update the effective or “last updated” date. If a change materially affects registered users, we will provide reasonable notice through the Service or by email when practical.
Changes apply prospectively from the stated effective date. If you do not agree to revised Terms, you must stop using the Service. Your continued use after revised Terms take effect constitutes acceptance to the extent permitted by law. Licenses granted for User Content submitted under an earlier version remain governed by the version accepted when the content was submitted unless you separately accept a revised license.
These Terms, together with the Privacy Policy and any supplemental terms presented for a particular feature, constitute the entire agreement between you and the Maintainers with respect to the subject matter hereof and supersede all prior or contemporaneous understandings, representations, communications, and agreements concerning such subject matter. In the event of an express conflict, applicable supplemental terms shall control solely with respect to the feature to which they relate.
You may not assign or transfer these Terms without our written consent. The Maintainers may assign these Terms, the Service, Project Materials, User Content licenses, and related rights and obligations to an entity formed to own or operate DeSlop Arena, or in connection with a reorganization, financing, merger, acquisition, asset transfer, or similar transaction, without your consent, subject to applicable law.
If any provision of these Terms is determined by a court of competent jurisdiction to be invalid, illegal, or unenforceable, such provision shall be enforced to the maximum extent permissible and modified only to the minimum extent necessary, and the remaining provisions shall continue in full force and effect. No waiver of any provision shall be deemed a further or continuing waiver of such provision or a waiver of any other provision. Headings are for convenience only and shall not affect interpretation. The words “including” and “includes” mean “including without limitation.”
Neither these Terms nor your use of the Service creates any employment, agency, partnership, joint venture, fiduciary, or franchise relationship between you and any Maintainer. Except for parties expressly entitled to indemnification or liability protection under these Terms, there are no third-party beneficiaries.
No Maintainer shall be liable for any delay or failure to perform resulting from causes beyond such Maintainer’s reasonable control, including acts of God, natural disasters, war, terrorism, civil unrest, labor disputes, governmental action, utility or telecommunications failures, internet disruptions, cyberattacks, or failures of third-party service providers.
You consent to receive notices and communications from us electronically, including by email, by posting through the Service, or by other electronic means. Electronic communications shall satisfy any legal requirement that such communications be in writing, to the extent permitted by applicable law.
Questions, legal notices, and permission requests may be sent to:
DeSlop Arena Maintainers — Kirill Skobelev, Eric Fithian, and Giulio Frey — Chicago, Illinois, USA — contact@desloparena.com