diff --git a/agent/error_classifier.py b/agent/error_classifier.py
index 0780bde90..511ab353c 100644
--- a/agent/error_classifier.py
+++ b/agent/error_classifier.py
@@ -91,6 +91,7 @@ class ClassifiedError:
 _BILLING_PATTERNS = [
     "insufficient credits",
     "insufficient_quota",
+    "insufficient balance",
     "credit balance",
     "credits have been exhausted",
     "top up your credits",