Update ChatGPTService.java

Author: Dema-koder

src/main/java/org/example/project/service/ChatGPTService.java

@@ -45,7 +45,7 @@ public String sendMessage(String prompt, String question) {
 
     private String sendMessagesToChatGPT(){
         ChatCompletion chatCompletion = ChatCompletion.builder()
-                .model(ChatCompletion.Model.GPT4)
+                .model(ChatCompletion.Model.GPT_3_5_TURBO)
                 .messages(messageHistory)
                 .maxTokens(3000)
                 .temperature(0.9)