Update main.py

main.py

@@ -353,7 +353,7 @@ async def generate_roadmap(study_input: StudyInput):
     openai.api_key = os.getenv("KEY")  # Replace with your actual API key or use environment variables
     try:
         response = openai.ChatCompletion.create(
-            model="gpt-4-0613",
+            model="gpt-4o-mini",
             messages=[
                 {
                     "role": "system",
@@ -369,9 +369,9 @@ async def generate_roadmap(study_input: StudyInput):
         answer = response['choices'][0]['message']['content'].strip()
 
         # Second OpenAI API call
-        provided_subtopics = list(phy.keys()) + list(chem.keys()) + list(maths.keys())
+        provided_subtopics = phy+chem+maths
         response = openai.ChatCompletion.create(
-            model="gpt-4-0613",
+            model="gpt-4o-mini",
             messages=[
                 {
                     "role": "system",