Terms of Use

Last updated: 16 June 2026

These Terms of Use ("Terms") govern your access to and use of comparity.ai ("the Platform"), a scientific research platform operated by the Max Planck Institute for Intelligent Systems, Department of Social Foundations of Computation, Tübingen, Germany ("we", "us", "the study organisers"). By accessing or using the Platform you agree to be bound by these Terms. If you do not agree, you must not use the Platform.

The Platform is part of a scientific study on arena-style benchmarks and human judgement of side-by-side comparisons of generative AI model outputs. It is operated exclusively for non-commercial academic research purposes and funded by the Max Planck Society.

1. Eligibility

You must be at least 18 years of age to create an account or use the Platform. By registering you represent and warrant that you meet this requirement.

2. Account and authentication

You are responsible for safeguarding your login credentials and for all activity that occurs under your account. You may not share, transfer, or sell access to your account. If you suspect unauthorized use, contact us immediately at tom.suehr@tuebingen.mpg.de.

3. Acceptable use

You agree to use the Platform in a lawful, ethical, and responsible manner. In particular you agree not to:

• use the Platform for any purpose that is unlawful under applicable law, including but not limited to applicable European Union law, German federal and state law, or the law of your own jurisdiction;
• submit prompts that contain, solicit, or are intended to produce content that is illegal, defamatory, threatening, harassing, discriminatory, hateful, violent, sexually explicit, or otherwise harmful;
• submit prompts that constitute or facilitate discrimination on the basis of race, ethnicity, national origin, religion, gender, sexual orientation, disability, age, or any other protected characteristic;
• submit prompts containing personal data of third parties without their explicit consent, in accordance with the EU General Data Protection Regulation (GDPR);
• submit prompts intended to generate content that infringes intellectual property rights, trade secrets, or export control regulations;
• attempt to circumvent, bypass, or disable any safety filters, content moderation mechanisms, rate limits, or other technical safeguards implemented by the Platform or the underlying AI models;
• attempt to extract, reconstruct, or reverse-engineer the AI models, their training data, weights, system prompts, or internal configurations;
• use the Platform for any commercial purpose or for any purpose unrelated to the scientific study.

4. Prohibition of crawling, scraping, and automated access

You may not use any automated means — including bots, crawlers, scrapers, browser extensions, or scripts — to access, index, collect data from, or interact with the Platform. All use must occur through normal, manual interaction with the Platform's user interface. Automated bulk requests or programmatic access to the Platform's API endpoints without prior written authorisation are strictly prohibited.

To protect the Platform against automated abuse, account registration is protected by a CAPTCHA mechanism (Cloudflare Turnstile). You may not attempt to bypass, automate, defeat, or otherwise interfere with this or any other bot-protection measure. Details on how this mechanism processes data are set out in the Data Protection Information Sheet.

5. Prohibition of model distillation and competitive use

You may not use the Platform, any model outputs obtained through the Platform, or any data published as part of this study to:

• train, fine-tune, distil, or otherwise improve any machine learning model (whether commercial or non-commercial);
• build or enhance any product, service, or benchmark that competes with the Platform;
• systematically collect model responses for the purpose of creating datasets for model training or evaluation outside the scope of this study.

Anonymised research data published as part of the study's scientific output is governed by its own licence terms and may be used in accordance with those terms.

6. Prompt data and publication

All prompts you submit, the corresponding model responses, and your preference votes are recorded and stored as part of the scientific study. This data may be published in anonymised or pseudonymised form as part of a public scientific dataset. Published data may be used by third parties for research purposes.

Do not enter personal, confidential, or sensitive information in your prompts. You are solely responsible for the content of your submissions.

7. Third-party AI service providers

User-submitted prompts are transmitted to third-party AI model providers through Microsoft Azure for the purpose of generating model responses. By using the Platform you acknowledge that your prompts will be processed by third parties as described in the Data Protection Information Sheet.

8. Acceptance of Terms

Before submitting your first prompt on the Platform, you will be asked to accept these Terms via a popup dialogue. Your acceptance is recorded in a cookie (tos_accepted) stored in your browser, which expires after 365 days. If you decline, no prompts will be sent on your behalf. Registered users also accept these Terms as part of the registration process.

9. Rate limits and automated enforcement

To ensure fair usage and platform stability, the following rate limits are enforced:

• Each registered user account is limited to 500 requests per 24-hour window. Exceeding this limit will result in an automatic account lock for 24 hours.
• Each IP address is limited to 500 requests per 24-hour window. Exceeding this limit will result in the IP address being temporarily blocked from accessing the Platform for the remainder of the 24-hour window.
• Each registered user account is limited to 100 shared chat links per 24-hour window. Each IP address is also limited to 100 share requests per 24-hour window. Shared links expire after 30 days.

These limits may be adjusted at any time without prior notice.

10. Enforcement and sanctions

Violations of these Terms may result in one or more of the following measures, at the sole discretion of the study organisers:

• temporary suspension (lock) of your account for up to 24 hours (automated or manual);
• manual ban of your account for a specified duration of up to one year;
• permanent deletion of your account and all associated data;
• immediate exclusion from the study.

The study organisers reserve the right to review submitted prompts and usage patterns for compliance with these Terms.

11. Intellectual property

The Platform, its design, source code, and all associated materials are the intellectual property of the Max Planck Society or its licensors. Nothing in these Terms grants you any right, title, or interest in the Platform beyond the limited right to use it as a participant in the study.

AI model outputs generated through the Platform are provided on an "as is" basis and do not constitute advice or endorsement of any kind. The study organisers make no representations regarding the accuracy, completeness, or fitness for any particular purpose of any model output.

12. Disclaimer of warranties

The Platform is provided "as is" and "as available" without warranty of any kind, whether express, implied, or statutory, including but not limited to warranties of merchantability, fitness for a particular purpose, or non-infringement. The study organisers do not guarantee uninterrupted or error-free operation of the Platform.

13. Limitation of liability

To the maximum extent permitted by applicable law, the Max Planck Society and its employees, researchers, and agents shall not be liable for any indirect, incidental, special, consequential, or punitive damages arising out of or in connection with your use of the Platform, even if advised of the possibility of such damages.

14. Data protection

Your personal data is processed in accordance with the EU General Data Protection Regulation (GDPR) and the German Federal Data Protection Act (BDSG). For full details on data collection, storage, processing, and your rights as a data subject, please refer to the Data Protection Information Sheet and the Declaration of Consent.

15. Modifications to these Terms

We reserve the right to modify these Terms at any time. Material changes will be communicated through the Platform (e.g. via the news page or a notice upon login). Continued use of the Platform after such notice constitutes acceptance of the updated Terms.

16. Governing law and jurisdiction

These Terms are governed by the laws of the Federal Republic of Germany. Any disputes arising out of or in connection with these Terms shall be subject to the exclusive jurisdiction of the competent courts in Stuttgart, Germany, unless mandatory provisions of consumer protection law provide otherwise.

17. Contact

For questions about these Terms, please contact:
Tom Sühr, M.Sc.
Max Planck Institute for Intelligent Systems
Department: Social Foundations of Computation
Email: tom.suehr@tuebingen.mpg.de