diff --git a/src/lib/components/admin/Analytics/AnalyticsModelModal.svelte b/src/lib/components/admin/Analytics/AnalyticsModelModal.svelte
index c9eb9cf3d..adcc6f33d 100644
--- a/src/lib/components/admin/Analytics/AnalyticsModelModal.svelte
+++ b/src/lib/components/admin/Analytics/AnalyticsModelModal.svelte
@@ -128,7 +128,9 @@
 				user_id: c.user_id,
 				user_name: c.user_name
 			}));
-			chatList = [...chatList, ...newChats];
+			const existingIds = new Set(chatList.map((c) => c.id));
+			const uniqueNewChats = newChats.filter((c) => !existingIds.has(c.id));
+			chatList = [...chatList, ...uniqueNewChats];
 			allChatsLoaded = chats.length < PAGE_SIZE;
 		} catch (err) {
 			console.error('Failed to load more chats:', err);
diff --git a/src/lib/components/admin/Users/UserList/UserChatsModal.svelte b/src/lib/components/admin/Users/UserList/UserChatsModal.svelte
index 480f7ccf5..4ae550d0c 100644
--- a/src/lib/components/admin/Users/UserList/UserChatsModal.svelte
+++ b/src/lib/components/admin/Users/UserList/UserChatsModal.svelte
@@ -81,7 +81,9 @@
 		allChatsLoaded = newChatList.length === 0;
 
 		if (newChatList.length > 0) {
-			chatList = [...chatList, ...newChatList];
+			const existingIds = new Set(chatList.map((c) => c.id));
+			const uniqueNewChats = newChatList.filter((c) => !existingIds.has(c.id));
+			chatList = [...chatList, ...uniqueNewChats];
 		}
 
 		chatListLoading = false;
diff --git a/src/lib/components/chat/MessageInput/InputMenu/Knowledge.svelte b/src/lib/components/chat/MessageInput/InputMenu/Knowledge.svelte
index 2df974c83..9037dfd4d 100644
--- a/src/lib/components/chat/MessageInput/InputMenu/Knowledge.svelte
+++ b/src/lib/components/chat/MessageInput/InputMenu/Knowledge.svelte
@@ -78,7 +78,9 @@
 			}
 
 			if (selectedFileItems) {
-				selectedFileItems = [...selectedFileItems, ...pageItems];
+				const existingIds = new Set(selectedFileItems.map((item) => item.id));
+				const newItems = pageItems.filter((item) => !existingIds.has(item.id));
+				selectedFileItems = [...selectedFileItems, ...newItems];
 			} else {
 				selectedFileItems = pageItems;
 			}
@@ -137,7 +139,9 @@
 			}
 
 			if (items) {
-				items = [...items, ...pageItems];
+				const existingIds = new Set(items.map((item) => item.id));
+				const newItems = pageItems.filter((item) => !existingIds.has(item.id));
+				items = [...items, ...newItems];
 			} else {
 				items = pageItems;
 			}
diff --git a/src/lib/components/layout/SearchModal.svelte b/src/lib/components/layout/SearchModal.svelte
index b0fe91491..a8c1fd5f6 100644
--- a/src/lib/components/layout/SearchModal.svelte
+++ b/src/lib/components/layout/SearchModal.svelte
@@ -163,7 +163,9 @@
 		allChatsLoaded = newChatList.length === 0;
 
 		if (newChatList.length > 0) {
-			chatList = [...chatList, ...newChatList];
+			const existingIds = new Set(chatList.map((c) => c.id));
+			const uniqueNewChats = newChatList.filter((c) => !existingIds.has(c.id));
+			chatList = [...chatList, ...uniqueNewChats];
 		}
 
 		chatListLoading = false;
diff --git a/src/lib/components/layout/Sidebar.svelte b/src/lib/components/layout/Sidebar.svelte
index b1cf1260d..2a8416b95 100644
--- a/src/lib/components/layout/Sidebar.svelte
+++ b/src/lib/components/layout/Sidebar.svelte
@@ -249,7 +249,9 @@
 
 		// once the bottom of the list has been reached (no results) there is no need to continue querying
 		allChatsLoaded = newChatList.length === 0;
-		await chats.set([...($chats ? $chats : []), ...newChatList]);
+		const existingIds = new Set(($chats ?? []).map((c) => c.id));
+		const uniqueNewChats = newChatList.filter((c) => !existingIds.has(c.id));
+		await chats.set([...($chats ? $chats : []), ...uniqueNewChats]);
 
 		chatListLoading = false;
 	};
diff --git a/src/lib/components/notes/Notes.svelte b/src/lib/components/notes/Notes.svelte
index bca2e4b51..4b4a208a8 100644
--- a/src/lib/components/notes/Notes.svelte
+++ b/src/lib/components/notes/Notes.svelte
@@ -221,7 +221,9 @@
 			}
 
 			if (items) {
-				items = [...items, ...pageItems];
+				const existingIds = new Set(items.map((item) => item.id));
+				const newItems = pageItems.filter((item) => !existingIds.has(item.id));
+				items = [...items, ...newItems];
 			} else {
 				items = pageItems;
 			}
diff --git a/src/lib/components/workspace/Knowledge.svelte b/src/lib/components/workspace/Knowledge.svelte
index 25b59d476..b2e117912 100644
--- a/src/lib/components/workspace/Knowledge.svelte
+++ b/src/lib/components/workspace/Knowledge.svelte
@@ -101,7 +101,9 @@
 			}
 
 			if (items) {
-				items = [...items, ...pageItems];
+				const existingIds = new Set(items.map((item) => item.id));
+				const newItems = pageItems.filter((item) => !existingIds.has(item.id));
+				items = [...items, ...newItems];
 			} else {
 				items = pageItems;
 			}