diff --git a/frontend-web/src/components/workspace/thread-title.tsx b/frontend-web/src/components/workspace/thread-title.tsx
index a5d86205..d001ca07 100644
--- a/frontend-web/src/components/workspace/thread-title.tsx
+++ b/frontend-web/src/components/workspace/thread-title.tsx
@@ -1,9 +1,10 @@
 import type { BaseStream } from "@langchain/langgraph-sdk";
-import { useEffect } from "react";
-
-import { useI18n } from "@/core/i18n/hooks";
-import type { AgentThreadState } from "@/core/threads";
-import { desensitize } from "@/lib/desensitize";
+import { useEffect } from "react";
+
+import { useI18n } from "@/core/i18n/hooks";
+import type { AgentThreadState } from "@/core/threads";
+import { sanitizeThreadTitleForDisplay } from "@/core/threads/utils";
+import { desensitize } from "@/lib/desensitize";
 
 import { useThreadChat } from "./chats";
 import { FlipDisplay } from "./flip-display";
@@ -16,16 +17,18 @@ export function ThreadTitle({
   threadId: string;
   thread: BaseStream<AgentThreadState>;
 }) {
-  const { t } = useI18n();
-  const { isNewThread } = useThreadChat();
-  useEffect(() => {
-    let _title = t.pages.untitled;
-
-    if (thread.values?.title) {
-      _title = thread.values.title;
-    } else if (isNewThread) {
-      _title = t.pages.newChat;
-    }
+  const { t } = useI18n();
+  const { isNewThread } = useThreadChat();
+  const displayTitle = sanitizeThreadTitleForDisplay(thread.values?.title);
+
+  useEffect(() => {
+    let _title = t.pages.untitled;
+
+    if (thread.values?.title) {
+      _title = displayTitle;
+    } else if (isNewThread) {
+      _title = t.pages.newChat;
+    }
     if (thread.isThreadLoading) {
       document.title = `Loading... - ${t.pages.appName}`;
     } else {
@@ -35,17 +38,18 @@ export function ThreadTitle({
     isNewThread,
     t.pages.newChat,
     t.pages.untitled,
-    t.pages.appName,
-    thread.isThreadLoading,
-    thread.values,
-  ]);
+    t.pages.appName,
+    thread.isThreadLoading,
+    thread.values,
+    displayTitle,
+  ]);
 
   if (!thread.values?.title) {
     return null;
   }
-  return (
-    <FlipDisplay uniqueKey={threadId}>
-      {desensitize(thread.values.title ?? "Untitled")}
-    </FlipDisplay>
-  );
-}
+  return (
+    <FlipDisplay uniqueKey={threadId}>
+      {desensitize(displayTitle)}
+    </FlipDisplay>
+  );
+}
diff --git a/frontend-web/src/core/threads/utils.ts b/frontend-web/src/core/threads/utils.ts
index 8877eda3..cf25b7b7 100644
--- a/frontend-web/src/core/threads/utils.ts
+++ b/frontend-web/src/core/threads/utils.ts
@@ -65,3 +65,15 @@ export function textOfMessage(message: Message) {
 export function titleOfThread(thread: AgentThread) {
   return thread.values?.title ?? "Untitled";
 }
+
+export function sanitizeThreadTitleForDisplay(title: string | null | undefined) {
+  if (!title) return "Untitled";
+
+  const cleaned = title
+    .replace(/<\/?[^>\n]+>/g, " ")
+    .replace(/<[^>\n]*$/g, " ")
+    .replace(/\s+/g, " ")
+    .trim();
+
+  return cleaned || "Untitled";
+}