diff --git a/src/agents/pi-embedded-helpers.test.ts b/src/agents/pi-embedded-helpers.test.ts
index 97a332224..1fb719c2b 100644
--- a/src/agents/pi-embedded-helpers.test.ts
+++ b/src/agents/pi-embedded-helpers.test.ts
@@ -26,6 +26,14 @@ describe("isRateLimitAssistantError", () => {
     expect(isRateLimitAssistantError(msg)).toBe(true);
   });
 
+  it("detects quota exceeded messages", () => {
+    const msg = asAssistant({
+      errorMessage:
+        "You exceeded your current quota, please check your plan and billing details. For more information on this error, read the docs: https://platform.openai.com/docs/guides/error-codes/api-errors.",
+    });
+    expect(isRateLimitAssistantError(msg)).toBe(true);
+  });
+
   it("returns false for non-error messages", () => {
     const msg = asAssistant({
       stopReason: "end_turn",
diff --git a/src/agents/pi-embedded-helpers.ts b/src/agents/pi-embedded-helpers.ts
index 79808d9e2..4cb5f86a2 100644
--- a/src/agents/pi-embedded-helpers.ts
+++ b/src/agents/pi-embedded-helpers.ts
@@ -117,7 +117,10 @@ export function isRateLimitAssistantError(
   if (!msg || msg.stopReason !== "error") return false;
   const raw = (msg.errorMessage ?? "").toLowerCase();
   if (!raw) return false;
-  return /rate[_ ]limit|too many requests|429/.test(raw);
+  return (
+    /rate[_ ]limit|too many requests|429/.test(raw) ||
+    raw.includes("exceeded your current quota")
+  );
 }
 
 function extractSupportedValues(raw: string): string[] {