Update backend/app.py

backend/app.py

@@ -14,6 +14,11 @@ async def custom_auth():
 
 
 
+import langroid as lr
+import langroid.language_models as lm
+import chainlit as cl
+
+
 import langroid as lr
 import langroid.language_models as lm
 import chainlit as cl
@@ -21,7 +26,13 @@ import chainlit as cl
 
 @cl.on_chat_start
 async def on_chat_start():
-    lm_config = lm.OpenAIGPTConfig(chat_model="ollama/mistral")
+      lm_config = lm.OpenAIGPTConfig(
+        chat_model=model or lm.OpenAIChatModel.GPT4_TURBO,
+        chat_context_length=8_000,
+        temperature=0,
+        max_output_tokens=200,
+        timeout=45,
+    )
     agent = lr.ChatAgent(lr.ChatAgentConfig(llm=lm_config))
     task = lr.Task(agent, interactive=True)