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Privacy policy

LAST UPDATED SEPTEMBER 11, 2026

  • This site collects almost nothing. There is no account, nothing to buy and no email list.

What is collected

  • Anonymous usage analytics: page views, the page you arrived from, your browser and operating system, an approximate location derived from your IP address, and errors. Nothing you type is stored, because there is nothing to type.

Who processes it

  • Vercel hosts the site and keeps its own request logs.

  • PostHog anonymous product analytics.

What is not done

  • There is no sign-in, no membership, no payment and no email list on this site, so there is no account, no card and no session anywhere in it.

  • Nothing here is sold, traded or shared for advertising. There is no ad network on the site, no retargeting pixel and no data broker in the path.

Cookies

  • The analytics library sets one anonymous identifier. The cookie policy says what it holds.

Corrections and removals

  • Corrections and removals go to hello@thecompound.tech, which reaches a person.

When a lab changes a document

The engine refetches every registered document on a schedule and files the line that moved. Model cards, system cards, pricing pages, API changelogs and deprecation notices all change without an announcement. Leave an address and Context Window writes when one does.