diff --git a/sandbox/BlazorApp1/Components/Pages/Home.razor.cs b/sandbox/BlazorApp1/Components/Pages/Home.razor.cs
index ce75114..70c8cee 100644
--- a/sandbox/BlazorApp1/Components/Pages/Home.razor.cs
+++ b/sandbox/BlazorApp1/Components/Pages/Home.razor.cs
@@ -27,7 +27,7 @@ async void SendClick()
 
             var stream = Anthropic.Messages.CreateStreamAsync(new()
             {
-                Model = Models.Claude3Opus,
+                Model = Models.Claude3Sonnet,
                 MaxTokens = 1024,
                 Temperature = temperature,
                 System = string.IsNullOrWhiteSpace(systemInput) ? null : systemInput,