diff --git a/llama_stack/cli/model/list.py b/llama_stack/cli/model/list.py
index a89b9c143..2f62cb9ce 100644
--- a/llama_stack/cli/model/list.py
+++ b/llama_stack/cli/model/list.py
@@ -7,6 +7,7 @@
 import argparse
 import os
 import time
+from pathlib import Path
 
 from llama_stack.cli.subcommand import Subcommand
 from llama_stack.cli.table import print_table
@@ -14,17 +15,8 @@ from llama_stack.distribution.utils.config_dirs import DEFAULT_CHECKPOINT_DIR
 from llama_stack.models.llama.sku_list import all_registered_models
 
 
-def _convert_size_to_gb(size):
-    return size / (1024**3)
-
-
 def _get_model_size(model_dir):
-    model_size = 0
-    for dirpath, _, files in os.walk(model_dir):
-        for file in files:
-            file_path = os.path.join(dirpath, file)
-            model_size += os.path.getsize(file_path)
-    return model_size
+    return sum(f.stat().st_size for f in Path(model_dir).rglob("*") if f.is_file())
 
 
 def _run_model_list_downloaded_cmd() -> None:
@@ -34,7 +26,7 @@ def _run_model_list_downloaded_cmd() -> None:
     for model in os.listdir(DEFAULT_CHECKPOINT_DIR):
         abs_path = os.path.join(DEFAULT_CHECKPOINT_DIR, model)
         space_usage = _get_model_size(abs_path)
-        model_size = f"{_convert_size_to_gb(space_usage):.2f} GB"
+        model_size = f"{space_usage / (1024**3):.2f} GB"
         modified_time = time.strftime("%Y-%m-%d %H:%M:%S", time.localtime(os.path.getmtime(abs_path)))
         rows.append(
             [