diff --git a/backend/services/billing.py b/backend/services/billing.py
index 6111f280..67fa9bb4 100644
--- a/backend/services/billing.py
+++ b/backend/services/billing.py
@@ -194,6 +194,8 @@ async def calculate_monthly_usage(client, user_id: str) -> float:
         start_time = datetime.fromisoformat(run['started_at'].replace('Z', '+00:00')).timestamp()
         if run['completed_at']:
             end_time = datetime.fromisoformat(run['completed_at'].replace('Z', '+00:00')).timestamp()
+            if start_time < end_time - 7200:
+                continue
         else:
             # if the start time is more than an hour ago, don't consider that time in total. else use the current time
             if start_time < now_ts - 3600: