diff --git a/packages/node/core/src/handlers/openai/types.ts b/packages/node/core/src/handlers/openai/types.ts
index d8ec575..773173f 100644
--- a/packages/node/core/src/handlers/openai/types.ts
+++ b/packages/node/core/src/handlers/openai/types.ts
@@ -1,26 +1,14 @@
 export const supportedOpenAiChatModels = [
-    'gpt-4-0125-preview',
-    'gpt-4-turbo-preview',
-    'gpt-4-1106-preview',
-    'gpt-4-vision-preview',
-    'gpt-4',
-    'gpt-4-0314',
-    'gpt-4-0613',
-    'gpt-4-32k',
-    'gpt-4-32k-0314',
-    'gpt-4-32k-0613',
-    'gpt-3.5-turbo',
-    'gpt-3.5-turbo-16k',
-    'gpt-3.5-turbo-0301',
-    'gpt-3.5-turbo-0613',
-    'gpt-3.5-turbo-1106',
-    'gpt-3.5-turbo-0125',
-    'gpt-3.5-turbo-16k-0613',
+    "gpt-4",
+    "gpt-4-turbo",
+    "gpt-4o",
+    "gpt-4o-mini",
+    "gpt-3.5-turbo",
 ];
 
 export type OpenAiChatModel = typeof supportedOpenAiChatModels[number];
 
-export const openAiDefaultChatModel: OpenAiChatModel = 'gpt-3.5-turbo';
+export const openAiDefaultChatModel: OpenAiChatModel = 'gpt-4o';
 
 export const asOpenAiChatModel = (value: any): OpenAiChatModel | undefined => {
     if (supportedOpenAiChatModels.includes(value)) {
diff --git a/packages/node/server/src/utils/createServer.ts b/packages/node/server/src/utils/createServer.ts
index 977e17a..9d36d60 100644
--- a/packages/node/server/src/utils/createServer.ts
+++ b/packages/node/server/src/utils/createServer.ts
@@ -50,7 +50,7 @@ export const createServer = (config: ServerConfig) => {
 
     const middlewareConfig: MiddlewareConfig = {
         apiKey: config.apiKey,
-        chatModel: 'gpt-4'
+        chatModel: 'gpt-4o'
     }
 
     const nlbridge = defaultMiddleware(config.api, middlewareConfig);