diff --git a/src/ui/src/assets/custom-agent-deprecation-banner-bg.png b/src/ui/src/assets/custom-agent-deprecation-banner-bg.png
deleted file mode 100644
index e366587fa..000000000
Binary files a/src/ui/src/assets/custom-agent-deprecation-banner-bg.png and /dev/null differ
diff --git a/src/ui/src/builder/BuilderApp.vue b/src/ui/src/builder/BuilderApp.vue
index 78158ccc8..b265726d1 100644
--- a/src/ui/src/builder/BuilderApp.vue
+++ b/src/ui/src/builder/BuilderApp.vue
@@ -1,13 +1,5 @@
 <template>
 	<div class="BuilderApp" tabindex="-1" :style="WDS_CSS_PROPERTIES">
-		<BuilderDeprecationBanner
-			v-if="showDeprecationBanner"
-			class="deprecationBanner"
-			:is-organization-admin="isOrganizationAdmin"
-			:is-post-cutoff="isPostCutoff"
-			:show-dismiss="!isPostCutoff && !dismissed"
-			@dismiss="onDismissBanner"
-		/>
 		<div
 			class="mainGrid"
 			:class="{ openPanels: ssbm.openPanels.value.size > 0 }"
@@ -145,9 +137,6 @@
 		<div id="drawer"></div>
 
 		<BuilderAppSocketTimeoutModal />
-		<BuilderRemigrationWarningDialog
-			v-model:is-open="showRemigrationWarningDialog"
-		/>
 		<!-- TOOLTIP -->
 
 		<BuilderTooltip id="tooltip" />
@@ -187,12 +176,6 @@ import { defineAsyncComponentWithLoader } from "@/utils/defineAsyncComponentWith
 import BuilderAppSocketTimeoutModal from "./BuilderAppSocketTimeoutModal.vue";
 import { useSocketTimeout } from "./useSocketTimeout";
 import BlueprintsNavigationStack from "@/components/blueprints/BlueprintsNavigationStack.vue";
-import BuilderDeprecationBanner from "./BuilderDeprecationBanner.vue";
-import BuilderRemigrationWarningDialog from "./BuilderRemigrationWarningDialog.vue";
-
-const DEPRECATION_BANNER_DISMISSED_KEY =
-	"customAgentDeprecationBannerDismissed";
-const REMIGRATION_WARNING_QUERY_PARAM = "showRemigrationWarning";
 
 provide(injectionKeys.isAutogenModalShown, ref(false));
 
@@ -221,66 +204,6 @@ const ssbm = inject(injectionKeys.builderManager);
 const notesManager = inject(injectionKeys.notesManager);
 const collaborationManager = inject(injectionKeys.collaborationManager);
 
-// Deprecation banner
-const dismissed = ref(
-	localStorage.getItem(DEPRECATION_BANNER_DISMISSED_KEY) === "true",
-);
-const isPreCutoffFlagEnabled = computed(() =>
-	wf.featureFlags.value.includes("beforeDeprecationCutoffAbv2"),
-);
-const isPostCutoff = computed(() =>
-	wf.featureFlags.value.includes("afterDeprecationCutoffAbv2"),
-);
-const isOrganizationAdmin = computed(() => wf.isOrganizationAdmin.value);
-const showDeprecationBanner = computed(
-	() =>
-		wf.isWriterCloudApp.value &&
-		(isPostCutoff.value ||
-			(isPreCutoffFlagEnabled.value && !dismissed.value)),
-);
-const showRemigrationWarningDialog = ref(false);
-
-function onDismissBanner() {
-	localStorage.setItem(DEPRECATION_BANNER_DISMISSED_KEY, "true");
-	dismissed.value = true;
-}
-
-function isPageRefresh() {
-	const navigation = performance.getEntriesByType("navigation")[0] as
-		| PerformanceNavigationTiming
-		| undefined;
-
-	return navigation?.type === "reload";
-}
-
-function consumeRemigrationWarningQueryParam() {
-	const url = new URL(window.location.href);
-	const shouldShowFromOpener =
-		url.searchParams.get(REMIGRATION_WARNING_QUERY_PARAM) === "true";
-
-	if (shouldShowFromOpener) {
-		url.searchParams.delete(REMIGRATION_WARNING_QUERY_PARAM);
-		window.history.replaceState(
-			window.history.state,
-			document.title,
-			url.toString(),
-		);
-	}
-
-	return shouldShowFromOpener;
-}
-
-onMounted(() => {
-	const shouldShowFromOpener = consumeRemigrationWarningQueryParam();
-
-	showRemigrationWarningDialog.value =
-		shouldShowFromOpener &&
-		!isPageRefresh() &&
-		wf.isWriterCloudApp.value &&
-		isPreCutoffFlagEnabled.value &&
-		!isPostCutoff.value;
-});
-
 const tracking = useWriterTracking(wf);
 const toasts = useToasts();
 
@@ -620,11 +543,6 @@ onUnmounted(() => {
 	pointer-events: auto;
 }
 
-.deprecationBanner {
-	flex-shrink: 0;
-	z-index: 10;
-}
-
 .mainGrid {
 	position: relative;
 	width: 100vw;
diff --git a/src/ui/src/builder/BuilderDeprecationBanner.vue b/src/ui/src/builder/BuilderDeprecationBanner.vue
deleted file mode 100644
index f2133f9aa..000000000
--- a/src/ui/src/builder/BuilderDeprecationBanner.vue
+++ /dev/null
@@ -1,291 +0,0 @@
-<template>
-	<section
-		aria-label="Custom agent deprecation notice"
-		class="BuilderDeprecationBanner"
-	>
-		<img
-			:src="bannerBg"
-			alt=""
-			aria-hidden="true"
-			class="BuilderDeprecationBanner__background"
-		/>
-		<div aria-hidden="true" class="BuilderDeprecationBanner__overlay" />
-		<div class="BuilderDeprecationBanner__content">
-			<div class="BuilderDeprecationBanner__copy">
-				<p class="BuilderDeprecationBanner__title">{{ title }}</p>
-				<p class="BuilderDeprecationBanner__body">
-					{{ body }}
-					<a
-						:href="LEARN_MORE_URL"
-						target="_blank"
-						rel="noopener noreferrer"
-						class="BuilderDeprecationBanner__learnMore"
-						:aria-label="`Learn more (opens in new tab)`"
-						>Learn more</a
-					>
-				</p>
-			</div>
-			<div class="BuilderDeprecationBanner__actions">
-				<WdsButton
-					v-if="showMigrateButton"
-					variant="neutral"
-					size="small"
-					class="BuilderDeprecationBanner__cta"
-					@click="onMigrateClick"
-				>
-					<svg
-						xmlns="http://www.w3.org/2000/svg"
-						width="16"
-						height="16"
-						viewBox="0 0 24 24"
-						fill="none"
-						stroke="currentColor"
-						stroke-width="2"
-						stroke-linecap="round"
-						stroke-linejoin="round"
-						aria-hidden="true"
-						style="flex-shrink: 0"
-					>
-						<path
-							d="M22 19a2 2 0 0 1-2 2H4a2 2 0 0 1-2-2V5a2 2 0 0 1 2-2h5l2 3h9a2 2 0 0 1 2 2z"
-						/>
-						<line x1="12" y1="11" x2="12" y2="17" />
-						<line x1="9" y1="14" x2="15" y2="14" />
-					</svg>
-					{{ migrateLabel }}
-				</WdsButton>
-				<WdsButton
-					v-else-if="showPlaybookButton"
-					variant="neutral"
-					size="small"
-					class="BuilderDeprecationBanner__cta"
-					@click="onPlaybookClick"
-				>
-					{{ CREATE_PLAYBOOK_LABEL }}
-					<svg
-						xmlns="http://www.w3.org/2000/svg"
-						width="16"
-						height="16"
-						viewBox="0 0 24 24"
-						fill="none"
-						stroke="currentColor"
-						stroke-width="2"
-						stroke-linecap="round"
-						stroke-linejoin="round"
-						aria-hidden="true"
-						style="flex-shrink: 0"
-					>
-						<line x1="7" y1="17" x2="17" y2="7" />
-						<polyline points="7 7 17 7 17 17" />
-					</svg>
-				</WdsButton>
-				<WdsButton
-					v-if="!isPostCutoff && showDismiss"
-					variant="secondary"
-					size="smallIcon"
-					aria-label="Dismiss deprecation notice"
-					class="BuilderDeprecationBanner__dismiss"
-					@click="$emit('dismiss')"
-				>
-					<svg
-						xmlns="http://www.w3.org/2000/svg"
-						width="16"
-						height="16"
-						viewBox="0 0 24 24"
-						fill="none"
-						stroke="currentColor"
-						stroke-width="2"
-						stroke-linecap="round"
-						stroke-linejoin="round"
-						aria-hidden="true"
-					>
-						<line x1="18" y1="6" x2="6" y2="18" />
-						<line x1="6" y1="6" x2="18" y2="18" />
-					</svg>
-				</WdsButton>
-			</div>
-		</div>
-	</section>
-</template>
-
-<script setup lang="ts">
-import { computed, inject } from "vue";
-import WdsButton from "@/wds/WdsButton.vue";
-import injectionKeys from "@/injectionKeys";
-import bannerBg from "@/assets/custom-agent-deprecation-banner-bg.png";
-
-const LEARN_MORE_URL =
-	"https://docs.google.com/document/d/1Zi1zNMVesciYSqL5Qv5oBskIiBysY5vghocyA0LdBYc/edit";
-const CREATE_PLAYBOOK_LABEL = "Create a playbook";
-const MIGRATE_AGENT_LABEL = "Migrate agent";
-const MIGRATE_AGENTS_LABEL = "Migrate agents";
-
-const DEPRECATION_CUTOFF_DATE = new Date("2026-09-10T00:00:00");
-
-function getDaysUntilCutoff(): number {
-	const msPerDay = 1000 * 60 * 60 * 24;
-	const diff = DEPRECATION_CUTOFF_DATE.getTime() - Date.now();
-	return Math.max(0, Math.ceil(diff / msPerDay));
-}
-
-function formatDaysTitle(daysRemaining: number): string {
-	const dayLabel = daysRemaining === 1 ? "day" : "days";
-	return `In ${daysRemaining} ${dayLabel} this Agent Builder is going away`;
-}
-
-const props = defineProps<{
-	isOrganizationAdmin: boolean;
-	isPostCutoff: boolean;
-	daysRemaining?: number;
-	showDismiss?: boolean;
-}>();
-
-defineEmits<{
-	dismiss: [];
-}>();
-
-const wf = inject(injectionKeys.core);
-
-const daysRemaining = computed(
-	() => props.daysRemaining ?? getDaysUntilCutoff(),
-);
-
-const title = computed(() => {
-	if (props.isPostCutoff) {
-		return "This agent builder is no longer supported";
-	}
-	return formatDaysTitle(daysRemaining.value);
-});
-
-const body = computed(() => {
-	if (props.isPostCutoff) {
-		return props.isOrganizationAdmin
-			? "Migrate your team's agents to the new Agent Builder now."
-			: "Create a Playbook instead.";
-	}
-	return props.isOrganizationAdmin
-		? "This legacy agent editor will no longer be available - migrate your agent to the new Agent Builder now."
-		: "This legacy agent editor will no longer be available - work with your Admin to migrate your agent to the new Agent Builder now.";
-});
-
-const migrateLabel = computed(() =>
-	props.isPostCutoff ? MIGRATE_AGENTS_LABEL : MIGRATE_AGENT_LABEL,
-);
-
-const showMigrateButton = computed(() => props.isOrganizationAdmin);
-const showPlaybookButton = computed(() => !props.isOrganizationAdmin);
-
-const playbooksUrl = computed(() => {
-	if (!wf) return "#";
-	const orgId = wf.writerOrgId.value;
-	if (!orgId) return "#";
-	return `/organization/${orgId}/team/default/ai-studio/agent-flow`;
-});
-
-function onMigrateClick() {
-	if (!wf) return;
-	const orgId = wf.writerOrgId.value;
-	if (!orgId) return;
-	window.location.href = `/organization/${orgId}/team/default/ai-studio/agents`;
-}
-
-function onPlaybookClick() {
-	window.open(playbooksUrl.value, "_blank", "noopener,noreferrer");
-}
-</script>
-
-<style scoped>
-.BuilderDeprecationBanner {
-	position: relative;
-	isolation: isolate;
-	flex-shrink: 0;
-	height: 80px;
-	width: 100%;
-	overflow: hidden;
-}
-
-.BuilderDeprecationBanner__background {
-	position: absolute;
-	inset: 0;
-	width: 100%;
-	height: 100%;
-	object-fit: cover;
-	object-position: center;
-}
-
-.BuilderDeprecationBanner__overlay {
-	pointer-events: none;
-	position: absolute;
-	inset: 0;
-	background: linear-gradient(
-		to bottom,
-		rgb(0 0 0 / 80%),
-		rgb(0 0 0 / 40%),
-		transparent
-	);
-}
-
-.BuilderDeprecationBanner__content {
-	position: relative;
-	display: flex;
-	height: 80px;
-	align-items: center;
-	justify-content: space-between;
-	gap: 16px;
-	padding: 14px 24px 14px 40px;
-}
-
-.BuilderDeprecationBanner__copy {
-	min-width: 0;
-	max-width: calc(100% - 200px);
-	color: white;
-}
-
-.BuilderDeprecationBanner__title {
-	margin: 0;
-	font-size: 18px;
-	font-weight: 500;
-	line-height: 1.35;
-}
-
-.BuilderDeprecationBanner__body {
-	margin: 0;
-	font-size: 12px;
-	line-height: 1.5;
-}
-
-.BuilderDeprecationBanner__learnMore {
-	color: inherit;
-	text-decoration: underline;
-	text-underline-offset: 2px;
-	white-space: nowrap;
-}
-
-.BuilderDeprecationBanner__actions {
-	display: flex;
-	flex-shrink: 0;
-	align-items: center;
-	gap: 8px;
-}
-
-.BuilderDeprecationBanner__cta {
-	border-color: white !important;
-	background-color: white !important;
-	color: black !important;
-	gap: 6px !important;
-}
-
-.BuilderDeprecationBanner__cta:hover {
-	background-color: rgb(255 255 255 / 90%) !important;
-}
-
-.BuilderDeprecationBanner__dismiss {
-	color: white !important;
-	background-color: transparent !important;
-	border-color: transparent !important;
-}
-
-.BuilderDeprecationBanner__dismiss:hover {
-	background-color: rgb(255 255 255 / 10%) !important;
-}
-</style>
diff --git a/src/ui/src/builder/BuilderRemigrationWarningDialog.vue b/src/ui/src/builder/BuilderRemigrationWarningDialog.vue
deleted file mode 100644
index 8d0819b74..000000000
--- a/src/ui/src/builder/BuilderRemigrationWarningDialog.vue
+++ /dev/null
@@ -1,42 +0,0 @@
-<template>
-	<WdsModal
-		v-if="isOpen"
-		title="Migrate again to update your app"
-		size="compact"
-		display-close-button
-		:actions="actions"
-		@close="closeDialog"
-	>
-		<p class="BuilderRemigrationWarningDialog__body">
-			Changes made here won't sync automatically. If you already migrated
-			to Agent Builder v2, please migrate again to update your app.
-		</p>
-	</WdsModal>
-</template>
-
-<script setup lang="ts">
-import { computed } from "vue";
-import WdsModal, { type ModalAction } from "@/wds/WdsModal.vue";
-
-const isOpen = defineModel("isOpen", { type: Boolean, default: false });
-
-const actions = computed<ModalAction[]>(() => [
-	{
-		desc: "I understand",
-		fn: closeDialog,
-	},
-]);
-
-function closeDialog() {
-	isOpen.value = false;
-}
-</script>
-
-<style scoped>
-.BuilderRemigrationWarningDialog__body {
-	margin: 0 0 4px;
-	color: var(--primaryTextColor);
-	font-size: 16px;
-	line-height: 1.6;
-}
-</style>