Update app.py

app.py

@@ -80,7 +80,7 @@ async def chat_function(text_in, gender, history):
 
     try:
         completion = client.chat.completions.create(
-            model="stepfun/step-3.5-flash:free",
+            model="arcee-ai/trinity-large-preview:free",
             messages=messages,
             temperature=1.0
         )