diff --git a/infra/modules/ca-aihub/main.tf b/infra/modules/ca-aihub/main.tf
index 90e2456..10d66ca 100644
--- a/infra/modules/ca-aihub/main.tf
+++ b/infra/modules/ca-aihub/main.tf
@@ -83,8 +83,8 @@ resource "azapi_resource" "ca_back" {
                 secretRef = "content-safety-key"
               },
               {
-                name      = "ContentModerator__JailbreakDetectionEndpoint",
-                value     = "contentsafety/text:detectJailbreak?api-version=2023-10-15-preview"
+                name  = "ContentModerator__JailbreakDetectionEndpoint",
+                value = "contentsafety/text:detectJailbreak?api-version=2023-10-15-preview"
               },
               {
                 name  = "BrandAnalyzer__BingEndpoint",
@@ -132,7 +132,7 @@ resource "azapi_resource" "ca_back" {
               },
               {
                 name  = "ImageAnalyzer__DeploymentName",
-                value = var.chat_gpt_deployment
+                value = var.chat_gpt4_vision_deployment
               },
               {
                 name  = "FormAnalyzer__FormRecogEndpoint",
diff --git a/src/AIHub/Controllers/ImageAnalyzerController.cs b/src/AIHub/Controllers/ImageAnalyzerController.cs
index b1a862e..79aa384 100644
--- a/src/AIHub/Controllers/ImageAnalyzerController.cs
+++ b/src/AIHub/Controllers/ImageAnalyzerController.cs
@@ -48,7 +48,15 @@ public async Task<IActionResult> DenseCaptionImage(string image_url, string prom
 
         using (httpClient = new HttpClient())
         {
-            httpClient.DefaultRequestHeaders.Add("api-key", AOAIsubscriptionKey);
+            if (string.IsNullOrEmpty(AOAIsubscriptionKey))
+            {
+                var credential = new DefaultAzureCredential();
+                httpClient.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", credential.GetToken(new TokenRequestContext(["https://api.openai.com/.default"])).Token);
+            }
+            else
+            {
+                httpClient.DefaultRequestHeaders.Add("api-key", AOAIsubscriptionKey);
+            }
             var payload = new
             {
                 enhancements = new
diff --git a/src/AIHub/GlobalUsings.cs b/src/AIHub/GlobalUsings.cs
index 9b4e269..8395264 100644
--- a/src/AIHub/GlobalUsings.cs
+++ b/src/AIHub/GlobalUsings.cs
@@ -3,6 +3,7 @@
 global using MVCWeb.Models;
 global using Azure.AI.ContentSafety;
 global using Azure;
+global using Azure.Core;
 global using Azure.Identity;
 global using Azure.Storage.Blobs;
 global using Azure.Storage.Blobs.Models;