feat: make it easier to use gpt4

README.md

@@ -383,7 +383,11 @@ Technology comparison:
 <details><a id="switch-gpt4"></a>
 <summary>How do you use GPT-4 with this sample?</summary>
 
-In `infra/main.bicep`, change `chatGptModelName` to 'gpt-4' instead of 'gpt-35-turbo'. You may also need to adjust the capacity above that line depending on how much TPM your account is allowed.
+Run these commands:
+```bash
+azd env set AZURE_OPENAI_CHATGPT_MODEL gpt-4
+```
+You may also need to adjust the capacity in `infra/main.bicep` file, depending on how much TPM your account is allowed.
 
 </details>
 <details><a id="chat-ask-diff"></a>

infra/main.bicep

@@ -64,8 +64,8 @@ param formRecognizerSkuName string = 'S0'
 
 param chatGptDeploymentName string // Set in main.parameters.json
 param chatGptDeploymentCapacity int = 30
-param chatGptModelName string = 'gpt-35-turbo'
-param chatGptModelVersion string = '0613'
+param chatGptModelName string // Set in main.parameters.json
+param chatGptModelVersion string // Set in main.parameters.json
 param embeddingDeploymentName string = 'embedding'
 param embeddingDeploymentCapacity int = 30
 param embeddingModelName string = 'text-embedding-ada-002'

infra/main.parameters.json

@@ -62,6 +62,12 @@
     "storageSkuName": {
       "value": "${AZURE_STORAGE_SKU=Standard_LRS}"
     },
+    "chatGptModelName": {
+      "value": "${AZURE_OPENAI_CHATGPT_MODEL=gpt-35-turbo}"
+    },
+    "chatGptModelVersion": {
+      "value": "${AZURE_OPENAI_CHATGPT_MODEL_VERSION=0613}"
+    },
     "chatGptDeploymentName": {
       "value": "${AZURE_OPENAI_CHATGPT_DEPLOYMENT=chat}"
     },