Update server.js

server.js

@@ -68,8 +68,8 @@ app.post('/chat', async (req, res) => {
         ];
 
         const response = await axios.post(targetUrl, {
-            model: 'gemini-1.5-pro-latest',
-            temperature: 0.2,
+            model: 'gemini-ultra',
+            temperature: 0.3,
             messages: messages
         }, {
             headers: {