Index: backend/ai/processRequestAi.js
===================================================================
--- backend/ai/processRequestAi.js	(revision 0750a8f61836e0ea352dfe8011e87ae53cbe7b64)
+++ backend/ai/processRequestAi.js	(revision 3c1fd8b587fc6d63f4fce19d2a6f6a089f6fceb4)
@@ -28,5 +28,5 @@
 
     const response = await openai.chat.completions.create({
-      model: 'gpt-4',
+      model: 'gpt-3.5-turbo',
       messages: [{ role: 'user', content: prompt }],
       temperature: 0.2, // Even lower temperature for more consistent responses