diff --git a/litellm/router_strategy/lowest_cost.py b/litellm/router_strategy/lowest_cost.py
index b927df0c438..81a49fa2518 100644
--- a/litellm/router_strategy/lowest_cost.py
+++ b/litellm/router_strategy/lowest_cost.py
@@ -251,10 +251,20 @@ class LowestCostLoggingHandler(CustomLogger):
             item_input_cost = None
             item_output_cost = None
             if _deployment.get("litellm_params", {}).get("input_cost_per_token", None):
-                item_input_cost = _deployment.get("litellm_params", {}).get("input_cost_per_token")
+                try:
+                    item_input_cost = float(
+                        _deployment.get("litellm_params", {}).get("input_cost_per_token")
+                    )
+                except (ValueError, TypeError):
+                    item_input_cost = None
 
             if _deployment.get("litellm_params", {}).get("output_cost_per_token", None):
-                item_output_cost = _deployment.get("litellm_params", {}).get("output_cost_per_token")
+                try:
+                    item_output_cost = float(
+                        _deployment.get("litellm_params", {}).get("output_cost_per_token")
+                    )
+                except (ValueError, TypeError):
+                    item_output_cost = None
 
             if item_input_cost is None:
                 item_input_cost = item_litellm_model_cost_map.get("input_cost_per_token", 5.0)