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Terms of Service

Last updated: August 20, 2026

1. Service Scope

Zeteyn provides a research-focused writing and analysis platform, including cloud and desktop capabilities.

2. Accounts

3. Acceptable Use

4. Content and Ownership

You retain ownership of your content. You grant Zeteyn the rights necessary to host, process, and deliver the service features you request.

Free accounts using Zeteyn-provided models share the research decisions made on them, which is how Zeteyn builds and improves its research models. That exchange is part of what the free plan is. To share nothing, install the local AI pack and work entirely on your own device, which is free, or move to a paid plan; self-hosted deployments are excluded as well. Bringing your own API key changes which provider answers your prompts and leaves this in place while you are on a free plan. The Privacy Policy describes precisely what a research decision record contains.

5. Subscriptions and Billing

Paid plans renew according to your subscription settings. Pricing, limits, and plan details are shown in-product and may be updated with notice.

6. Termination

You may stop using the service at any time. We may suspend or terminate accounts that violate these terms or legal requirements.

7. Liability

Service is provided on an as-available basis. To the maximum extent permitted by law, Zeteyn disclaims implied warranties and limits liability for indirect damages.

8. Privacy

Processing of personal data is described in the Privacy Policy.