diff --git a/src/gateway/chat-abort.test.ts b/src/gateway/chat-abort.test.ts
index 9829f45c999..db978d8b684 100644
--- a/src/gateway/chat-abort.test.ts
+++ b/src/gateway/chat-abort.test.ts
@@ -1,6 +1,7 @@
 import { describe, expect, it, vi } from "vitest";
 import {
   abortChatRunById,
+  isChatStopCommandText,
   type ChatAbortOps,
   type ChatAbortControllerEntry,
 } from "./chat-abort.js";
@@ -42,6 +43,20 @@ function createOps(params: {
   };
 }
 
+describe("isChatStopCommandText", () => {
+  it("matches slash and standalone multilingual stop forms", () => {
+    expect(isChatStopCommandText(" /STOP!!! ")).toBe(true);
+    expect(isChatStopCommandText("stop please")).toBe(true);
+    expect(isChatStopCommandText("停止")).toBe(true);
+    expect(isChatStopCommandText("やめて")).toBe(true);
+    expect(isChatStopCommandText("توقف")).toBe(true);
+    expect(isChatStopCommandText("stopp")).toBe(true);
+    expect(isChatStopCommandText("pare")).toBe(true);
+    expect(isChatStopCommandText("/status")).toBe(false);
+    expect(isChatStopCommandText("keep going")).toBe(false);
+  });
+});
+
 describe("abortChatRunById", () => {
   it("broadcasts aborted payload with partial message when buffered text exists", () => {
     const runId = "run-1";