Update app.py

app.py

@@ -5,7 +5,7 @@ from openai import OpenAI
 # Initialize the Nebius OpenAI client
 client = OpenAI(
     base_url="https://api.studio.nebius.ai/v1/",
-    api_key=os.getenv("NEBIUS_API_KEY"), 
+    api_key=os.getenv("OPENAI_API_KEY"), 
 )
 
 # Function to process input and return the response