added gpt4o as default chat model

Author: pavsingh7

infra/main.bicep

@@ -98,10 +98,10 @@ param chatGptDeploymentName string = ''
 param chatGptDeploymentVersion string = ''
 param chatGptDeploymentCapacity int = 0
 var chatGpt = {
-  modelName: !empty(chatGptModelName) ? chatGptModelName : startsWith(openAiHost, 'azure') ? 'gpt-35-turbo' : 'gpt-3.5-turbo'
+  modelName: !empty(chatGptModelName) ? chatGptModelName : startsWith(openAiHost, 'azure') ? 'gpt-4o' : 'gpt-4o'
   deploymentName: !empty(chatGptDeploymentName) ? chatGptDeploymentName : 'chat'
-  deploymentVersion: !empty(chatGptDeploymentVersion) ? chatGptDeploymentVersion : '0613'
-  deploymentCapacity: chatGptDeploymentCapacity != 0 ? chatGptDeploymentCapacity : 30
+  deploymentVersion: !empty(chatGptDeploymentVersion) ? chatGptDeploymentVersion : '2024-05-13'
+  deploymentCapacity: chatGptDeploymentCapacity != 0 ? chatGptDeploymentCapacity : 57
 }
 
 param embeddingModelName string = ''
@@ -351,7 +351,7 @@ var defaultOpenAiDeployments = [
       version: chatGpt.deploymentVersion
     }
     sku: {
-      name: 'Standard'
+      name: 'GlobalStandard'
       capacity: chatGpt.deploymentCapacity
     }
   }