Update app.py

app.py

@@ -34,7 +34,7 @@ def call_grok(prompt):
     }
 
     data = {
-        "model": "grok-2-latest",
+        "model": "grok-4-1-fast-non-reasoning",
         "messages": [
             {"role": "system", "content": "You are an expert AI research analyst."},
             {"role": "user", "content": prompt}