# isRunning

> Returns true if an asynchronous build is still running.

## Definition

* **Type:** Property
* **Namespace:** [UnityEditor.AI](/engine/6000.7/script-reference/unityeditor/ai.md)
* **Assembly:** UnityEditor.AIModule

> **Warning:**
>
> **Deprecated.** UnityEditor NavMeshBuilder has been deprecated. Use UnityEngine.AI.NavMeshBuilder instead.

```csharp
public static bool isRunning { get; }
```