> Index of every Falcon docs page, for assistants: https://falcon.com/docs/llms.txt

# Use the parent company's models

A sub-company uses the parent company's models, tiers and routes until the parent allows changes. The parent's model rules always apply, and a route on a parent key is labelled as the parent company's key.

Open the sub-company, then **Connections › Model providers**. The key itself is never shown.

## Set by the parent

- When the parent still chooses the models, Models opens with **Set by** and the parent company's name.
- If the sub-company may not change them, the note is **Ask** the parent **to let sub-companies change models. You can still add your own model keys.**
- If the parent has allowed changes and this company has not changed them yet, the note is **You can change these models here.** The parent's **model rules still apply.**
- If this company has changed them, the note is **You've changed these models here.** The parent's **model rules still apply.**

## What is inherited

- While the switch is off, the sub-company uses the parent's models, tiers and routes.
- The parent's model rules always apply to the sub-company, even when the sub-company may change its own list.
- In **Runs through**, a route that uses a parent key starts with **Parent company's** instead of **Your**. The rest of the label is that key's name. The key is not shown, and the sub-company cannot replace or remove it.
- Removing that key on the parent removes those routes on the sub-company.
- A key the sub-company adds for the same provider is used instead. See [Add the sub-company's own key](https://falcon.com/docs/sub-company-own-key).

## Let sub-companies change models

On the parent company, open **Connections › Model providers › Limits**. **Sub-companies can change models** is off until you turn it on. The note while it is off: **Off: your sub-companies use your models, tiers and routes. Your model rules always apply to them, and they can always add their own model keys.** Turning it on lets each sub-company change its own models, tiers and routes. It does not share apps, accounts or channels, and it does not show the parent keys.

## Related

- [Add the sub-company's own key](https://falcon.com/docs/sub-company-own-key)
- [Add a sub-company](https://falcon.com/docs/add-a-sub-company)
- [Detach a sub-company](https://falcon.com/docs/detach-a-sub-company)