Update app.py

app.py

@@ -74,12 +74,12 @@ def parse_query(nl_query):
 
     try:
         response = openai.chat.completions.create(
-            model="gpt-4",
+            model="gpt-4o-mini",
             messages=messages,
             temperature=0,
             max_tokens=150,
         )
-        sql_query = response.choices[0].message['content'].strip()
+        sql_query = response.choices[0].message.content.strip()
         return sql_query
     except Exception as e:
         return f"Error generating SQL query: {e}"