diff --git a/label_anything/sam/mmdetection.py b/label_anything/sam/mmdetection.py
index 0c30271..74a13ba 100644
--- a/label_anything/sam/mmdetection.py
+++ b/label_anything/sam/mmdetection.py
@@ -62,6 +62,7 @@ def load_my_model(
 class MMDetection(LabelStudioMLBase):
     """Object detector based on https://github.com/open-mmlab/mmdetection."""
 
+     _predictor = None
     def __init__(self,
                  model_name="sam_hq",
                  config_file=None,
@@ -78,10 +79,13 @@ def __init__(self,
                  **kwargs):
 
         super(MMDetection, self).__init__(**kwargs)
-
-        PREDICTOR = load_my_model(
-            model_name, device, sam_config, sam_checkpoint_file)
-        self.PREDICTOR = PREDICTOR
+        
+        # Only load the model if it hasn't been loaded before
+        if MMDetection._predictor is None:
+           MMDetection._predictor = load_my_model(
+               model_name, device, sam_config, sam_checkpoint_file)
+          
+        self.PREDICTOR = MMDetection._predictor
 
         self.out_mask = out_mask
         self.out_bbox = out_bbox