Terms of use

Last Updated: August 11, 2026

Introduction

Mono (“Service”) is offered by Solid Technologies AG (“Company”). These Terms of Service (“Terms”) govern your use of the Mono website, services, and features (collectively, the “Service”). By accessing or using the Service, you agree to be bound by these Terms. If you do not agree, you may not use the Service.

1. Acceptance of Terms

By creating an account or otherwise using the Service, you acknowledge that you have read, understood, and agree to these Terms, the Privacy Policy, and the Cookie Policy, each of which is incorporated into these Terms by reference. If you do not agree to all applicable terms and policies, you must discontinue use of the Service.

If you use the Service as a business customer and Mono processes personal data on your behalf as a processor, the Data Processing Agreement (“DPA”) also forms part of these Terms and is incorporated by reference. In the event of a conflict between the DPA and these Terms with respect to processing of personal data on your behalf, the DPA will prevail to the extent of that conflict.

2. Eligibility

  1. Age Requirement: You must be at least 18 years old to use the Service.
  2. Legal Compliance: You are solely responsible for ensuring that your use of the Service is in compliance with all applicable laws, rules, and regulations, including data protection laws in your jurisdiction.

3. Description of the Service

Mono provides a unified interface to access and chat with models from multiple third-party model providers. Features may include:

  1. Selecting and using different large language models made available through the Service.
  2. Entering prompts, uploading permitted content (provided you have the legal rights), and receiving model-generated outputs.
  3. Using models that are offered either with or without usage limits, depending on the model.

Important notes:

  • Mono may add, remove, or modify available models or features at any time without notice.
  • There is no public or private API for Mono. Access must occur through the human-operated user interface only.

4. Account Registration and Security

  1. Account Creation: You may need to create an account to access certain features. You agree to provide accurate, current, and complete information when creating your account and to keep it updated.
  2. Account Security: You are responsible for maintaining the confidentiality of your credentials and for all activities under your account. Notify Mono promptly of any unauthorized use or suspected breach.

5. User Content and Model Outputs

  1. User Content Ownership: Any prompts, images, text, or other materials you upload (“User Content”) remain your property. By uploading User Content, you represent and warrant that you own or have all necessary rights to use and distribute that content.
  2. License to Mono (Service Operation): You grant Solid Technologies AG a non-exclusive, worldwide, royalty-free license to store, display, reproduce, and distribute your User Content solely to operate, secure, troubleshoot, and improve the Service.
  3. Model Outputs: Model-generated outputs may be subject to the terms, licenses, and usage rules of the relevant third-party model provider. Ownership, licensing, re-use, and restrictions on outputs can vary by provider. You are solely responsible for reviewing and complying with the applicable provider terms before using or distributing any outputs. Inputs and outputs are not used to train providers' models unless the interface clearly discloses that the selected provider may use data for training and you explicitly agree before continuing.
  4. Responsibility: You are solely responsible for User Content and for your use of outputs. Ensure that neither your User Content nor your use of outputs violates law or infringes third-party rights.
  5. Monitoring and Removal: Mono may remove or restrict access to User Content or outputs that violate these Terms or are otherwise objectionable, at Mono's discretion.

6. Intellectual Property

  1. Mono's Intellectual Property: The Service (including software, UI, designs, templates, and all related intellectual property) is owned by or licensed to Solid Technologies AG. Except for the limited rights necessary to use the Service, no rights are granted. You may not reproduce, modify, distribute, translate, reverse engineer (except to the extent such restriction is prohibited by law), or create derivative works of Mono's intellectual property without Mono's prior written consent.
  2. Trademarks: All trademarks, service marks, and trade names (including “Mono” and “Solid Technologies AG”) are owned by or licensed to Solid Technologies AG. You may not use these marks without Mono's express written permission.

7. Free Usage, Subscriptions, Usage Limits, and Pricing

  1. Free Usage: You may use up to 10 chat messages and 10 minutes in voice mode free of charge. After the free allowance is exhausted, a paid subscription is required to continue using the corresponding feature.
  2. Paid Subscriptions: Mono offers paid subscription tiers. The features, models, and usage available may vary by subscription tier.
  3. Limited and Unlimited Models: Some models are offered without a fixed usage limit, while others are subject to usage limits. Current estimated limits are published at mono.chat/details. Published message limits are estimates based on typical request sizes. Your actual limit is determined by the actual token usage of your requests and responses and may therefore be higher or lower than the published estimate.
  4. Pricing and Taxes: Subscription prices are determined by Mono. Value-added tax is included when it is shown during the checkout process and on the receipt. The customer is responsible for any other applicable taxes, duties, and government charges.
  5. Changes: Mono may change plan pricing, model availability, model classifications, and usage limits at any time and without prior notice. Updated terms will apply to subsequent use.
  6. Billing and Renewal: Subscriptions may auto-renew unless you cancel before the renewal date. By subscribing, you authorize Mono or the payment processor to charge the recurring subscription fee and any applicable taxes.
  7. No Refunds: All payments are non-refundable unless required by law, including for partial billing periods or downgrades.

8. Prohibited Conduct

You agree not to:

  1. Violate any applicable law, regulation, or third-party right (including IP, privacy, and publicity rights).
  2. Upload, create, or distribute content that is unlawful, defamatory, abusive, threatening, harassing, hateful, deceptive, or otherwise objectionable; or that exploits or harms minors; or that invades others' privacy or security.
  3. Generate or disseminate malware or malicious code; probe or scan systems; interfere with or disrupt the Service or networks.
  4. Scrape, crawl, harvest, or use automated means to access, query, or extract data from the Service without Mono's express written permission.
  5. Circumvent rate limits, usage quotas, or access controls; test or benchmark in ways that degrade the Service; or attempt to access non-public areas.
  6. Use any automation technologies (including bots, scripts, RPA, headless browsers, or API wrappers) to interact with the Service. The Service must be used by humans through the Mono interface. Accessibility tools may be used at your own risk.
  7. Share, sell, or transfer your account or credentials; or enable others to access the Service via your account.
  8. Engage in activities involving political persuasion, medical or legal advice generation, high-risk or regulated uses, biometric identifiers, or other sensitive or potentially harmful applications. Where any such activity is lawful in your jurisdiction, you do so solely at your own risk, and Mono disclaims responsibility to the maximum extent permitted by law.

9. Termination

  1. Termination by You: You may stop using the Service or cancel your subscription at any time. Cancellation takes effect at the end of the then-current billing period; no refunds are provided unless required by law.
  2. Termination or Suspension by Mono: Mono may suspend or terminate your access at any time, with or without notice, including for actual or suspected violations of these Terms, non-payment, abuse, fraud, automated access, or risk to the Service or others.
  3. Effect of Termination: Upon termination, your right to use the Service ceases immediately. Sections that by their nature should survive (including Sections 5–6 and 10–16) will survive.

10. Disclaimer of Warranties

  1. As Is: The Service is provided on an “as is” and “as available” basis, without warranties of any kind, express or implied, including merchantability, fitness for a particular purpose, and non-infringement.
  2. No Guarantee: Mono does not guarantee that the Service will be uninterrupted, secure, or error-free, or that User Content or outputs will be preserved without loss or corruption. Model outputs may be inaccurate, incomplete, or otherwise unreliable.
  3. Firebase and Other Infrastructure: The Service runs on third-party infrastructure (including Firebase). Mono is not responsible for downtime, data loss, or issues caused by Firebase or other third-party services.
  4. Third-Party Model Providers: Your prompts, outputs, and related data may be transmitted to third-party model providers for inference and processing. Those providers may handle data under their own terms and privacy practices; Mono does not control and is not responsible for their acts or omissions.

11. Limitation of Liability

  1. No Liability for Certain Damages: To the fullest extent permitted by law, Solid Technologies AG shall not be liable for indirect, incidental, special, consequential, exemplary, or punitive damages, or any loss of profits or revenues, or loss of data, goodwill, or reputation.
  2. Cap on Liability: In no event shall Mono's total liability exceed the amount you paid to Mono for use of the Service in the 12 months preceding the event giving rise to liability, or one hundred US dollars (US$100), whichever is greater.
  3. Some Jurisdictions: Some jurisdictions do not allow exclusions or limitations of certain damages; in such jurisdictions, the above limitations may not apply to you.

12. Indemnification

You agree to indemnify, defend, and hold harmless Solid Technologies AG and its officers, directors, employees, and agents from any claims, liabilities, damages, losses, and expenses (including reasonable attorneys' fees) arising out of or related to your use of the Service, your User Content, your use or distribution of outputs, or your violation of these Terms or applicable law.

13. Governing Law and Dispute Resolution

  1. Governing Law: These Terms and any disputes arising out of or related to them are governed by the laws of Switzerland, without regard to conflict-of-law principles.
  2. Forum: Exclusive jurisdiction and venue lie in the courts located in Luzern, Switzerland, and you consent to the personal jurisdiction of such courts.

14. Modifications to the Terms

Mono may update these Terms at any time at Mono's discretion. If Mono makes material changes, Mono will notify you by posting the revised Terms on the website and updating the “Last Updated” date above. By continuing to use the Service after changes become effective, you agree to the revised Terms.

15. Privacy, Cookies, and Data Processing

  1. Privacy Policy: The Privacy Policy explains how Mono collects, uses, shares, and protects personal data. By using the Service, you acknowledge that you have read and understood it.
  2. Cookie Policy: The Cookie Policy explains the use of cookies and similar technologies and how you can manage your preferences.
  3. Data Processing Agreement: If you use the Service as a business customer and Mono processes personal data on your behalf as a processor, the Data Processing Agreement applies and forms part of these Terms. In the event of a conflict between the Data Processing Agreement and these Terms with respect to such processing, the Data Processing Agreement will prevail to the extent of that conflict.

16. Contact Information

Service Provider: Solid Technologies AG
Data Protection Officer: Jonas Kamber, jonas@mono.chat

If you have any questions, concerns, or feedback regarding these Terms, please contact Mono at the email above.