Update app.py

app.py

@@ -60,7 +60,7 @@ def preprocess_pdf(pdf_path, tokenizer):
 
 def translate_text(text, target_language):
     response = openai.ChatCompletion.create(
-        model="gpt-4",
+        model="gpt-4-1106-preview",
         messages=[
             {"role": "system", "content": "You are a helpful assistant that translates English text to other languages."},
             {"role": "user", "content": f'Translate the following English text to {target_language}: "{text}"'},
@@ -70,7 +70,7 @@ def translate_text(text, target_language):
 
 def explain_term(term):
     response = openai.ChatCompletion.create(
-        model="gpt-4.5-turbo",
+        model="gpt-4-1106-preview",
         messages=[
             {
                 "role": "system",
@@ -143,7 +143,7 @@ if uploaded_file is not None:
         chat_history = "\n".join([sentence[0] for sentence in top_5_sentences])
 
         response = openai.ChatCompletion.create(
-            model="gpt-4.5-turbo",
+            model="gpt-4-1106-preview",
             messages=[
                 {"role": "system", "content": "You are a helpful generator which read the short paragraphs and answer the question."},
                 {"role": "user", "content": chat_history},