Update app.py

app.py

@@ -73,13 +73,10 @@ demo = gr.ChatInterface(
     fn=bot_streaming,
     title="Multimodal Chat Assistant",
     additional_inputs=[
-        gr.Slider(
-            minimum=10,
-            maximum=500,
-            value=250,
-            step=10,
-            label="Maximum number of new tokens to generate",
-        )
+        gr.Textbox(value="You are a friendly assistant.", label="System message"),
+        gr.Slider(minimum=10, maximum=500, value=250, step=10, label="Maximum number of new tokens to generate"),
+        gr.Slider(minimum=0.1, maximum=4.0, value=0.7, step=0.1, label="Temperature"),
+        gr.Slider(minimum=0.1, maximum=1.0, value=0.95, step=0.05, label="Top-p (nucleus sampling)"),
     ],
     description=(
         "This demo combines text and image understanding using Moondream2 for visual "