diff --git a/litellm/constants.py b/litellm/constants.py
index 9c25cf77906..83acf087c18 100644
--- a/litellm/constants.py
+++ b/litellm/constants.py
@@ -48,6 +48,14 @@ DEFAULT_REPLICATE_POLLING_DELAY_SECONDS = int(
     os.getenv("DEFAULT_REPLICATE_POLLING_DELAY_SECONDS", 1)
 )
 DEFAULT_IMAGE_TOKEN_COUNT = int(os.getenv("DEFAULT_IMAGE_TOKEN_COUNT", 250))
+
+# Model cost map validation constants
+MODEL_COST_MAP_MIN_MODEL_COUNT = int(
+    os.getenv("MODEL_COST_MAP_MIN_MODEL_COUNT", 50)
+)  # Minimum number of models a fetched cost map must contain to be considered valid
+MODEL_COST_MAP_MAX_SHRINK_PERCENT = float(
+    os.getenv("MODEL_COST_MAP_MAX_SHRINK_PERCENT", 0.5)
+)  # Maximum allowed shrinkage vs local backup (0.5 = reject if fetched map is <50% of backup)
 DEFAULT_IMAGE_WIDTH = int(os.getenv("DEFAULT_IMAGE_WIDTH", 300))
 DEFAULT_IMAGE_HEIGHT = int(os.getenv("DEFAULT_IMAGE_HEIGHT", 300))
 # Maximum size for image URL downloads in MB (default 50MB, set to 0 to disable limit)