License class

Aspose.LLM.License is the class used to apply and check the product license at runtime. This page covers the API surface; for the process of obtaining and deploying a license (including the free temporary license), see Licensing.

Class reference

namespace Aspose.LLM;

public class License
{
    public License();
    public void SetLicense(string licensePath);
    public void SetLicense(Stream licenseStream);
    public static bool IsLicensed { get; }
}

Apply a license

Apply the license once per process, before the first inference call.

From a file

var license = new Aspose.LLM.License();
license.SetLicense("Aspose.LLM.lic");

If you pass a file name without a directory, the loader searches:

  1. The folder of the Aspose.LLM assembly.
  2. The folder of the calling assembly.
  3. The folder of the entry assembly.
  4. The current working directory.
  5. Embedded resources in the calling assembly.

Pass a full path to bypass this search.

From a stream

using var stream = new FileStream("Aspose.LLM.lic", FileMode.Open, FileAccess.Read);
var license = new Aspose.LLM.License();
license.SetLicense(stream);

Use a stream for licenses coming from secret stores, HTTP responses, or encrypted storage.

Check license status

bool isLicensed = Aspose.LLM.License.IsLicensed;

IsLicensed is a static property. It returns true when a valid license is applied to the current process and false otherwise (including when the license has expired).

Effect of licensing on the API

  • Without a license — StartNewChatAsync, SendMessageAsync, and SendMessageToSessionAsync throw Exception("Not licensed for this method").
  • With a valid license — all methods work normally.
  • With an expired temporary license — same behavior as without a license.

Non-inference operations (AsposeLLMApi.Create, Dispose, GetDefaultPreset) work regardless of license state.

What’s next

  • Licensing — how to obtain and deploy a license, including embedded resources and temporary licenses.
  • Hello, world! — first runnable example with licensing.
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