diff --git a/supervision/detection/tools/inference_slicer.py b/supervision/detection/tools/inference_slicer.py
index 103b3fa4..4cc05f19 100644
--- a/supervision/detection/tools/inference_slicer.py
+++ b/supervision/detection/tools/inference_slicer.py
@@ -83,6 +83,8 @@ class InferenceSlicer:
         import supervision as sv
         from rfdetr import RFDETRMedium
 
+        model = RFDETRMedium()
+
         def callback(tile):
             return model.predict(tile)
 
@@ -97,6 +99,8 @@ class InferenceSlicer:
         from PIL import Image
         from ultralytics import YOLO
 
+        model = YOLO("yolo11m.pt")
+
         def callback(tile):
             results = model(tile)[0]
             return sv.Detections.from_ultralytics(results)