> ## Documentation Index
> Fetch the complete documentation index at: https://docs.trynito.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Private Level

> Open-weight models with zero data retention enforced on the upstream provider.

Private is where open-weight models start. The upstream provider is held to **zero data retention**: instructed, contractually and technically, not to keep your request after serving it.

## What You Get

* **Nothing retained upstream.** A model is carried at Private only if the provider serving it can meet that requirement.
* **Nothing retained by Nito.** Your prompt, the response, reasoning, tool payloads, and attachment contents are never persisted. That holds at every level.

## How to Pick It

Choose a model whose level is Private. The level travels with the model, so there is nothing else to set. Browse with the `models` command, or see the [Model List](/models/all-models).

The level is a property of the model, so a call never runs at a level the model does not carry. One that cannot be served at the level you chose fails with a clear message.

## When to Use It

When what the provider retains is the deciding factor: confidential business content, customer data, anything where the provider keeping nothing is the assurance you need. When you also want proof of where the call ran, that is [Confidential](/privacy/levels/confidential).

## Related Resources

<CardGroup cols={3}>
  <Card title="Privacy Levels in Depth" icon="square-list" href="/privacy/levels">
    All four levels, and how each is chosen.
  </Card>

  <Card title="Confidential Level" icon="postage-stamp" href="/privacy/levels/confidential">
    Sealed execution with an attestation you can verify.
  </Card>

  <Card title="Data Retention and Visibility" icon="cubes" href="/privacy/data-retention-and-visibility">
    What is kept, and who can see what.
  </Card>
</CardGroup>