Update useapi.py

useapi.py

@@ -64,7 +64,7 @@ def get_models():
                     if model_info['model'] in ['gemma-2-9b', 'llama-3.1-8b']:
                         weight = 12  # Assign a low weight to reduce their frequency
                     else:
-                        weight = int(math.ceil(25 / model_info['price'] + 0.5))
+                        weight = int(math.ceil(25 / (model_info['price'] + 0.5)))
                     self.models.extend([model_info['model']] * weight)
 
     model_storage = ModelStorage()