Use gpt-4 model for answer generation (#1178)

* use gpt-4 model for answer generation

* lint fix

Author: anastasiya1155

client/src/components/Chat/index.tsx

@@ -129,9 +129,7 @@ const Chat = () => {
             }`
           : ''
       }&answer_model=${
-        preferredAnswerSpeed === 'normal'
-          ? 'gpt-4-turbo-24k'
-          : 'gpt-3.5-turbo-finetuned'
+        preferredAnswerSpeed === 'normal' ? 'gpt-4' : 'gpt-3.5-turbo-finetuned'
       }`;
       console.log(url);
       const eventSource = new EventSource(url);