diff --git a/src/agents/failover-error.ts b/src/agents/failover-error.ts
index ddef89717..cfd9d37c4 100644
--- a/src/agents/failover-error.ts
+++ b/src/agents/failover-error.ts
@@ -1,6 +1,7 @@
 import { classifyFailoverReason, type FailoverReason } from "./pi-embedded-helpers.js";
 
-const TIMEOUT_HINT_RE = /timeout|timed out|deadline exceeded|context deadline exceeded/i;
+const TIMEOUT_HINT_RE =
+  /timeout|timed out|deadline exceeded|context deadline exceeded|stop reason:\s*abort|unhandled stop reason:\s*abort/i;
 const ABORT_TIMEOUT_RE = /request was aborted|request aborted/i;
 
 export class FailoverError extends Error {
diff --git a/src/agents/pi-embedded-helpers/errors.ts b/src/agents/pi-embedded-helpers/errors.ts
index ab1407668..98a740e2f 100644
--- a/src/agents/pi-embedded-helpers/errors.ts
+++ b/src/agents/pi-embedded-helpers/errors.ts
@@ -599,6 +599,9 @@ const ERROR_PATTERNS = {
     "deadline exceeded",
     "context deadline exceeded",
     /without sending (?:any )?chunks?/i,
+    /\bstop reason:\s*abort\b/i,
+    /\breason:\s*abort\b/i,
+    /\bunhandled stop reason:\s*abort\b/i,
   ],
   billing: [
     /["']?(?:status|code)["']?\s*[:=]\s*402\b|\bhttp\s*402\b|\berror(?:\s+code)?\s*[:=]?\s*402\b|\b(?:got|returned|received)\s+(?:a\s+)?402\b|^\s*402\s+payment/i,