MUI Chat Terms of Service

This Agreement constitutes a legally binding agreement between you or the business and/or entity which you represent (Licensee or Customer) and MUI (Licensor) for the MUI Chat service mentioned below. MUI and Customer are each referred to herein as a "Party" and collectively as the "Parties".

Definitions

  • "MUI" means Material-UI SAS, a legal entity located at 128 Rue La Boétie, 75008 Paris, France.
  • "Service" means MUI’s Chat service accessible from MUI docs or chat.mui.com (‘the Site’).
  • "Prompt" means text or other content submitted to the Service by Customer.
  • "Output" means code, text or other content generated by the Service in response to Prompts.
  • "Credits" Credits are consumed whenever a prompt message is sent. Currently, one prompt consumes one credit. We may introduce larger models in the future that consume more credits per prompt.
  • "Billing Cycle" means the recurring interval (e.g., monthly) for charging subscription fees, generally on the same day of each month as the subscription start date. If that day does not exist in a subsequent month, the charge occurs on the last day of that month.
  • "Personal Data" has the meaning set out in Regulation (EU) 2016/679 (GDPR) and includes equivalent concepts such as “Personally Identifiable Information (PII).”

Subscription Grant

2.1 Access

Subject to Customer’s timely payment of all applicable Fees (defined below) and compliance with this Agreement, MUI grants Customer a limited, non‑exclusive, non‑transferable right to access and use the Service during the Term (defined in Section 9) solely for Customer’s internal business purposes. This license includes the right to use the service for both personal and commercial purposes, subject to your subscription plan and these Terms.

2.2 Usage Limits

Customer’s use of the Service may be limited based on their chosen subscription plan.

2.3 Acceptance by Use

By using the Service, Customer agrees to and is legally bound by this Agreement and MUI’s Terms of Service (as updated from time to time and available at https://mui.com/legal/), without the need for any further action or signature.

2.4 Account creation and management

You must create an account to use the services. You are responsible for maintaining account security. Account deletion must be requested via support. We reserve the right to terminate accounts that violate these Terms.

2.5 Plan Changes or Service Cessation

Customer may upgrade their subscription plan or cease use of the Service at any time through the Service dashboard or by written notice to MUI. Plan upgrades take effect immediately upon confirmation, and corresponding subscription fees will be prorated for the remainder of the current Billing Cycle. If Customer ceases use of the Service, Fees accrued up to the effective date of cessation remain payable.

2.6 Additional License Terms – MUI X EULA

Customer acknowledges that its use of the Service is also subject to the MUI X End‑User License Agreement for commercial plans (the "EULA") available at https://mui.com/legal/mui-x-eula/, which is incorporated herein by reference.

2.7 Acceptable-Use and Content Standards

Customer shall not, and shall not permit any third party to, use the Service to:

  • Violate Applicable Law;
  • Upload or generate content that is unlawful, infringing, hateful, harassing, discriminatory, deceptive, or that facilitates the creation of deep-fakes, unauthorised surveillance, weapons design, personal medical advice, or other high-risk activities;
  • Attempt to probe, scan, or test the vulnerability of the Service or breach any security or authentication measures;
  • Interfere with or disrupt the Service or the data contained therein;
  • Reverse engineer, decompile, or disassemble the Service except to the extent such restriction is prohibited by law.

MUI may suspend or rate-limit the Service without liability if Customer’s use breaches this Section or poses a security or legal risk to MUI, its providers, or other users. MUI will use commercially reasonable efforts to give advance notice unless prohibited by law or prevented by exigent circumstances.

Fees and Payment

3.1 Subscription Fee

Customer shall pay MUI a monthly subscription fee for the MUI Chat Service as per the below tiers:

  • Free plan: You receive 30 credits per month with a daily limit of 10 credits.
  • Pro plan: At $20 per user per month, you receive 250 credits/month with no daily limit.
  • Enterprise plan: Not currently available.

3.1.1 Credit Rollover & Expiry

Unused Credits expire at the end of the applicable Billing Cycle and do not roll over to subsequent Billing Cycles. Credits have no cash or refund value except as expressly required by law.

MUI reserves the right to change the Subscription Fee or introduce new pricing tiers in the future. Any changes will apply to the next Billing Cycle and will be communicated to the Customer at least 30 days in advance via email or through the Service dashboard.

3.2 Payment Terms

  • The service is subscription-based with recurring monthly billing.
  • Subscriptions automatically renew at the end of each billing cycle.
  • We use Stripe as our third-party payment processor to facilitate subscription transactions and manage billing cycles. By providing your payment information, you authorize us and our designated payment processor to automatically charge all applicable subscription fees to your selected payment method on a recurring basis, in accordance with the terms of your subscription.
  • By using a third-party payment service such as Stripe, you also agree to be bound by that provider’s terms and conditions.

3.3 Currency

Unless otherwise stated, all amounts are in United States Dollars (USD).

Intellectual Property Rights

4.1 MUI's Rights

The Service, together with all associated intellectual‑property rights, is and shall remain the exclusive property of MUI and its licensors. Except for the access rights expressly granted in this Agreement, no other rights are granted, and all rights are reserved by MUI.

  • MUI owns and retains all rights, title, and interest in and to:
    • Brand elements: The "MUI Chat" name and brand, all MUI Chat logos, designs, and visual elements, all marketing materials and website content.
    • Site elements: The Site architecture and design, all site features and functionalities, our proprietary algorithms and systems, the user interface and experience design, all documentation and supporting materials.
    • Website content: All text, graphics, and media on our website, blog posts, documentation, and guides, marketing materials and promotional content, interface elements and design components.
  • These elements are protected by copyright, trademark, trade dress, patent laws, and other intellectual property rights.

4.2 User Rights / Usage Rights

MUI makes no claim to ownership of:

  • Code generated using the service;
  • Applications and solutions built using the service;
  • Custom implementations and modifications;
  • Derivative works based on generated code;
  • Your business logic and application structure.

You may freely:

  • Use generated code commercially;
  • Modify and adapt generated code;
  • Distribute generated code in any form;
  • Sell applications built using the service;
  • Open source your implementations.

To be explicitly clear:

  • MUI places no restrictions on your use of generated code.
  • You are free to use, modify, and distribute generated code without attribution.
  • No licenses or royalties are owed to MUI for using generated code.
  • Your implementations and modifications are yours to control.
  • You can combine generated code with other sources without restriction.

Data Usage, Ownership, and Training

We collect and process data from your use of the service to improve the service, provide support, and enhance user experience. While our Privacy Policy contains detailed information about data collection and processing, this section outlines how we use your data within the service.

We categorize data you interact with through the Services into three types:

5.1 Usage Data (Owned by MUI)

“Usage Data” refers to telemetry, logs, and technical metadata generated by your use of the Services including, but not limited to:

  • Feature usage statistics;
  • API request and performance metrics;
  • Device, browser, and operating system metadata;
  • Session activity and error logs.

MUI owns all Usage Data and may use it without restriction for any business purpose, without limitation, including to:

  • Monitor service performance and stability;
  • Diagnose issues and maintain reliability;
  • Improve system functionality;
  • Analyze user trends;
  • Generate anonymous benchmarks and analytics.

Usage Data never includes source code, user-submitted content, or identifiable Personal Data.

5.2 Customer Data (Owned by You)

“Customer Data” refers to all content you input, or generate through use of the Services, including:

  • Prompts submitted to the platform;
  • Generated code and outputs (subject to any third-party rights and excluding MUI materials);
  • Project structures, logic, and configurations.

MUI may collect, use, store, and process Customer Data solely to provide and improve the Services, including for system operations, support, diagnostics, and security purposes. In addition, MUI may use Customer Data, excluding any Personal Data therein, for the purposes of:

  • Training and fine-tuning machine learning and AI models;
  • Benchmarking and analytics; and
  • Developing, improving, and enhancing the functionality and performance of the Services and related technologies.

For the avoidance of doubt, MUI will not use Personal Data contained within Customer Data for training, benchmarking, or product development purposes.

5.2.1 Operational Access and Benchmarking

To troubleshoot and improve the platform, authorized MUI personnel may access your workspace data (including prompts, generated code, and logs).

  • Access is limited to personnel with a business need; and
  • All access is logged and audited.

MUI may generate aggregate, de-identified benchmarks (e.g., error rates, latency, usage statistics). These benchmarks:

  • Never include readable source code or project names;
  • Are retained even after account or project deletion; and
  • May be used for internal metrics, product development, or public-facing performance summaries.

5.3 Use of Personal Data

MUI will only use Personal Data for the following purposes:

  • To provide and support the Services, including account management, authentication, support, and billing; and
  • For any business purpose, but only in aggregated and de-identified form that does not reasonably identify you or any other individual.

Examples of business purposes include, but are not limited to:

  • Product improvement and feature development;
  • AI model training and system optimization;
  • Analytics and usage insights;
  • Reliability and performance benchmarking; and
  • Support content enhancement.

MUI does not use any Personal Data for AI training or fine-tuning. We do not sell Personal Data and do not share it with third parties for advertising or marketing. You may request access to or deletion of your Personal Data at any time by contacting: contact@mui.com

Data Sharing and Processing

6.1 Servers

Chat prompts are subject to being processed by a third-party provider (Anthropic, OpenAI, and Google). You should not add any Personal Data to your prompts. As per Section 5 (Data Usage, Ownership, and Training), MUI represents and warrants that no Personal Data is sent to the third-party provider servers unless you explicitly add it to your prompts or by editing generated code.

6.2 Data Privacy compliance

MUI represents and warrants that the Service is fully compliant with GDPR data privacy regulations.

Disclaimers

THE SERVICE IS PROVIDED "AS IS" WITHOUT WARRANTIES OF ANY KIND, WHETHER EXPRESS, IMPLIED, OR STATUTORY, INCLUDING WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND NON‑INFRINGEMENT.

Limitation of Liability

IN NO EVENT WILL EITHER PARTY BE LIABLE FOR ANY INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL, OR EXEMPLARY DAMAGES ARISING OUT OF OR IN CONNECTION WITH THIS AGREEMENT, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. EACH PARTY’S TOTAL LIABILITY UNDER THIS AGREEMENT WILL NOT EXCEED THE AMOUNTS ACTUALLY PAID BY CUSTOMER TO MUI UNDER THIS AGREEMENT DURING THE TWELVE (12) MONTHS PRECEDING THE CLAIM.

Term and Termination

9.1 Term

This Agreement begins on the Effective Date and continues on a month‑to‑month basis until terminated by either Party as provided herein (the "Term").

9.2 Termination for Convenience

Either Party may terminate this Agreement for convenience:

  • Written Notice. By providing the other Party at least thirty (30) days’ prior written notice; or
  • Self‑Service Cancellation. By completing the cancellation workflow in the Service’s account interface, when such workflow is made available by MUI. The use of the self‑service cancellation feature constitutes written notice.

9.3 Termination for Cause

Either Party may terminate this Agreement immediately upon written notice if the other Party materially breaches this Agreement and fails to cure such breach within 15 days after receiving written notice thereof.

9.4 Effect of Termination

Upon termination or expiration of this Agreement, Customer’s right to access the Service will cease, and Customer shall immediately cease all use of the Service. Sections 3 (Fees and Payment), 4 (Intellectual Property), 5 (Data Usage, Ownership, and Training), 6 (Data Sharing and Processing), 7 (Disclaimers), 8 (Limitation of Liability), and 10 (General Provisions) shall survive termination.

General Provisions

10.1 Governing Law; Venue. This Agreement is governed by the laws of France. Any dispute arising out of or in connection with this Agreement shall be submitted to the exclusive jurisdiction of the Paris Court of Appeal.

10.2 Force Majeure. Neither Party shall be liable for any delay or failure to perform due to causes beyond its reasonable control (including strikes, shortages, acts of God, war, terrorism, pandemics, or governmental action).

10.3 Assignment. Neither Party may assign this Agreement without the prior written consent of the other Party, except that MUI may assign this Agreement in connection with a merger or sale of substantially all of its assets, or sale of MUI Chat.

10.4 Entire Agreement; Amendments. This Agreement constitutes the entire agreement between the Parties with respect to its subject matter and supersedes all prior or contemporaneous agreements.