Update app.py

app.py

@@ -42,7 +42,7 @@ final_answer = FinalAnswerTool()
 model = HfApiModel(
 max_tokens=2096,
 temperature=0.5,
-model_id='deepseek-ai/DeepSeek-R1',# it is possible that this model may be overloaded
+model_id='perplexity-ai/r1-1776',# it is possible that this model may be overloaded
 custom_role_conversions=None,
 )