Update app.py

app.py

@@ -295,7 +295,7 @@ class Educational_Agent:
     """Modern LangChain agent with LLM-based tool decision making"""
     
     def __init__(self):
-        self.llm = Qwen25SmallLLM(model_path="Qwen/Qwen2.5-3B-Instruct")
+        self.llm = Qwen25SmallLLM(model_path="Qwen/Qwen2.5-1.5B-Instruct", use_4bit=True)
         self.tool_decision_engine = Tool_Decision_Engine(self.llm)
         self.memory = ConversationBufferWindowMemory(
             memory_key="chat_history",