Update app.py

app.py

@@ -134,7 +134,7 @@ def initialize_story(api_key, genre, theme, length):
         # Initialize LLM
         llm = ChatOpenAI(
             openai_api_key=api_key,
-            model="gpt-4-turbo",
+            model="gpt-4.5-preview",
             temperature=0.7
         )
         
@@ -169,7 +169,7 @@ def continue_story(api_key):
         # Initialize LLM
         llm = ChatOpenAI(
             openai_api_key=api_key,
-            model="gpt-4-turbo",
+            model="gpt-4.5-preview",
             temperature=0.7
         )
         
@@ -190,7 +190,7 @@ def generate_branches(api_key):
         # Initialize LLM
         llm = ChatOpenAI(
             openai_api_key=api_key,
-            model="gpt-4-turbo",
+            model="gpt-4.5-preview",
             temperature=0.8  # Higher temperature for more creative branches
         )