Functionality rework

app.py

@@ -35,7 +35,7 @@ def model_gen(
     if len(content) == 0:
         return '', []
     
-    chat_history = chat_history[-1] if no_context and len(chat_history)>1  else chat_history
+    chat_history = [chat_history[-1]] if no_context and len(chat_history)>=1  else chat_history
     
     return model_response(
         content, 
@@ -91,7 +91,7 @@ def tab_online_arena():
     global S3_SESSION, GEN_LIB, MODEL_LIB, INIT_MODELS, CURRENT_MODELS
     with gradio.Row():
         with gradio.Column():
-            model_left = gradio.Dropdown(["TINYLLAMA", "QWEN2INS1B", "RUBASE"], value="TINYLLAMA", interactive=True, multiselect=False, label="Left model")
+            model_left = gradio.Dropdown(["TINYLLAMA", "QWEN2INS1B", "RUBASE"], value="QWEN2INS1B", interactive=True, multiselect=False, label="Left model")
             chatbot_left = gradio.Chatbot()
         with gradio.Column():
             model_right = gradio.Dropdown(["TINYLLAMA", "QWEN2INS1B", "RUBASE"], value= "RUBASE", interactive=True, multiselect=False, label="Right model")

utils.py

@@ -1,7 +1,6 @@
 import requests
 import json
 import os
-import boto3
 from datetime import datetime
 from copy import copy