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

# Browser and API domains for Braintrust orgs

> Understand how browser and API URLs work for Braintrust-hosted and self-hosted organizations, and find the correct endpoint for your data plane region.

> [!NOTE]
>
> **Applies to:**
>
> * Plan - Any
> * Deployment - Any
> *
> * Identify the browser URL and API endpoint for your Organization

## Summary

Braintrust-hosted organizations use `https://www.braintrust.dev` for browser access. The API endpoint depends on the organization's data plane region:

| Region | Browser URL | API URL |
| - | - | - |
| US | `https://www.braintrust.dev` | `https://api.braintrust.dev` |
| EU | `https://www.braintrust.dev` | `https://api-eu.braintrust.dev` |

For self-hosted deployments, use the API endpoint configured for your organization's data plane.

## What is happening

## How browser and API URLs work

The browser URL opens the Braintrust web app. The API URL identifies the data plane used to store and retrieve your AI data.

Development, staging, and production organizations share the browser domain. Separate organizations have different organization paths within the app.

An organization's API endpoint depends on its region or self-hosted configuration, rather than whether you use it for development or production.

## Find the correct endpoint

### Braintrust-hosted organizations

1. Open `https://www.braintrust.dev` and select your organization.
2. Go to **Settings > Data plane** to view its region and API URL.
3. Go to ** Settings** > [** Data plane**](https://www.braintrust.dev/app/~/configuration/data-plane) to view its region and API URL.
   See [Data plane regions](https://docs.braintrust.dev/admin/organizations.md#data-plane-region).

### Self-hosted data planes

Configure your organization's API, Gateway, and Realtime URLs under ** Settings** > [** Data plane**](https://www.braintrust.dev/app/~/configuration/data-plane). Use the applicable data plane endpoint when explicitly configuring API clients.

Self-hosting the data plane does not by itself change the browser URL. The standard web app remains at `https://www.braintrust.dev`.

See [Configure API URLs](https://docs.braintrust.dev/admin/organizations.md#configure-api-urls-self-hosted) and [Client routing](https://docs.braintrust.dev/admin/self-hosting/configure/networking.md#client-routing) for custom routing configurations.

## How to confirm your configuration

* Confirm that you selected the intended organization in the web app.
* Check its region and API URL under **Settings > Data plane**.
* Check its region and API URL under ** Settings** > [** Data plane**](https://www.braintrust.dev/app/~/configuration/data-plane).

## Notes

## Dev and prod organization separation

For production and staging separation, Braintrust recommends separate projects. Separate organizations are an option when you need physical isolation across different deployments. See [Separate production and staging](https://docs.braintrust.dev/admin.md#separate-production-and-staging).

The browser URL alone does not identify your data plane region or API endpoint.


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