# ChatGptResponse.SystemFingerprint property

This fingerprint represents the backend configuration that the model runs with. Can be used in conjunction with the [`Seed`](../ChatGptParameters/Seed.md) request parameter to understand when backend changes have been made that might impact determinism.

```csharp
public string? SystemFingerprint { get; set; }
```

## See Also

* class [ChatGptResponse](../ChatGptResponse.md)
* namespace [ChatGptNet.Models](../../ChatGptNet.md)

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