diff --git a/app/javascript/mastodon/actions/markers.ts b/app/javascript/mastodon/actions/markers.ts
index 6254e3f083..0b3280c212 100644
--- a/app/javascript/mastodon/actions/markers.ts
+++ b/app/javascript/mastodon/actions/markers.ts
@@ -2,7 +2,6 @@ import { debounce } from 'lodash';
 
 import type { MarkerJSON } from 'mastodon/api_types/markers';
 import { getAccessToken } from 'mastodon/initial_state';
-import { selectUseGroupedNotifications } from 'mastodon/selectors/settings';
 import type { AppDispatch, RootState } from 'mastodon/store';
 import { createAppAsyncThunk } from 'mastodon/store/typed_functions';
 
@@ -76,12 +75,7 @@ interface MarkerParam {
 }
 
 function getLastNotificationId(state: RootState): string | undefined {
-  // eslint-disable-next-line @typescript-eslint/no-unsafe-return
-  return selectUseGroupedNotifications(state)
-    ? state.notificationGroups.lastReadId
-    : // @ts-expect-error state.notifications is not yet typed
-      // eslint-disable-next-line @typescript-eslint/no-unsafe-call
-      state.getIn(['notifications', 'lastReadId']);
+  return state.notificationGroups.lastReadId;
 }
 
 const buildPostMarkersParams = (state: RootState) => {
diff --git a/app/javascript/mastodon/actions/notifications_migration.tsx b/app/javascript/mastodon/actions/notifications_migration.tsx
index 0d4da765ec..cd9f5ca3d6 100644
--- a/app/javascript/mastodon/actions/notifications_migration.tsx
+++ b/app/javascript/mastodon/actions/notifications_migration.tsx
@@ -1,14 +1,10 @@
-import { selectUseGroupedNotifications } from 'mastodon/selectors/settings';
 import { createAppAsyncThunk } from 'mastodon/store';
 
 import { fetchNotifications } from './notification_groups';
-import { expandNotifications } from './notifications';
 
 export const initializeNotifications = createAppAsyncThunk(
   'notifications/initialize',
-  (_, { dispatch, getState }) => {
-    if (selectUseGroupedNotifications(getState()))
-      void dispatch(fetchNotifications());
-    else void dispatch(expandNotifications({}));
+  (_, { dispatch }) => {
+    void dispatch(fetchNotifications());
   },
 );
diff --git a/app/javascript/mastodon/actions/streaming.js b/app/javascript/mastodon/actions/streaming.js
index 03013110c3..b6fc31fae8 100644
--- a/app/javascript/mastodon/actions/streaming.js
+++ b/app/javascript/mastodon/actions/streaming.js
@@ -1,7 +1,5 @@
 // @ts-check
 
-import { selectUseGroupedNotifications } from 'mastodon/selectors/settings';
-
 import { getLocale } from '../locales';
 import { connectStream } from '../stream';
 
@@ -105,18 +103,14 @@ export const connectTimelineStream = (timelineId, channelName, params = {}, opti
           const notificationJSON = JSON.parse(data.payload);
           dispatch(updateNotifications(notificationJSON, messages, locale));
           // TODO: remove this once the groups feature replaces the previous one
-          if(selectUseGroupedNotifications(getState())) {
-            dispatch(processNewNotificationForGroups(notificationJSON));
-          }
+          dispatch(processNewNotificationForGroups(notificationJSON));
           break;
         }
         case 'notifications_merged':
           const state = getState();
           if (state.notifications.top || !state.notifications.mounted)
             dispatch(expandNotifications({ forceLoad: true, maxId: undefined }));
-          if (selectUseGroupedNotifications(state)) {
-            dispatch(refreshStaleNotificationGroups());
-          }
+          dispatch(refreshStaleNotificationGroups());
           break;
         case 'conversation':
           // @ts-expect-error
@@ -141,21 +135,15 @@ export const connectTimelineStream = (timelineId, channelName, params = {}, opti
 
 /**
  * @param {Function} dispatch
- * @param {Function} getState
  */
-async function refreshHomeTimelineAndNotification(dispatch, getState) {
+async function refreshHomeTimelineAndNotification(dispatch) {
   await dispatch(expandHomeTimeline({ maxId: undefined }));
 
-  // TODO: remove this once the groups feature replaces the previous one
-  if(selectUseGroupedNotifications(getState())) {
-    // TODO: polling for merged notifications
-    try {
-      await dispatch(pollRecentGroupNotifications());
-    } catch {
-      // TODO
-    }
-  } else {
-    await dispatch(expandNotifications({}));
+  // TODO: polling for merged notifications
+  try {
+    await dispatch(pollRecentGroupNotifications());
+  } catch {
+    // TODO
   }
 
   await dispatch(fetchAnnouncements());
diff --git a/app/javascript/mastodon/features/notifications/components/column_settings.jsx b/app/javascript/mastodon/features/notifications/components/column_settings.jsx
index ed2f4ada3a..ed2947c175 100644
--- a/app/javascript/mastodon/features/notifications/components/column_settings.jsx
+++ b/app/javascript/mastodon/features/notifications/components/column_settings.jsx
@@ -6,7 +6,6 @@ import { FormattedMessage } from 'react-intl';
 import ImmutablePropTypes from 'react-immutable-proptypes';
 
 import { identityContextPropShape, withIdentity } from 'mastodon/identity_context';
-import { forceGroupedNotifications } from 'mastodon/initial_state';
 import { PERMISSION_MANAGE_USERS, PERMISSION_MANAGE_REPORTS } from 'mastodon/permissions';
 
 import ClearColumnButton from './clear_column_button';
@@ -36,7 +35,6 @@ class ColumnSettings extends PureComponent {
 
     const filterAdvancedStr = <FormattedMessage id='notifications.column_settings.filter_bar.advanced' defaultMessage='Display all categories' />;
     const unreadMarkersShowStr = <FormattedMessage id='notifications.column_settings.unread_notifications.highlight' defaultMessage='Highlight unread notifications' />;
-    const groupingShowStr = <FormattedMessage id='notifications.column_settings.beta.grouping' defaultMessage='Group notifications' />;
     const alertStr = <FormattedMessage id='notifications.column_settings.alert' defaultMessage='Desktop notifications' />;
     const showStr = <FormattedMessage id='notifications.column_settings.show' defaultMessage='Show in column' />;
     const soundStr = <FormattedMessage id='notifications.column_settings.sound' defaultMessage='Play sound' />;
@@ -68,18 +66,6 @@ class ColumnSettings extends PureComponent {
 
         <PolicyControls />
 
-        {!forceGroupedNotifications && (
-          <section role='group' aria-labelledby='notifications-beta'>
-            <h3 id='notifications-beta'>
-              <FormattedMessage id='notifications.column_settings.beta.category' defaultMessage='Experimental features' />
-            </h3>
-
-            <div className='column-settings__row'>
-              <SettingToggle id='unread-notification-markers' prefix='notifications' settings={settings} settingPath={['groupingBeta']} onChange={onChange} label={groupingShowStr} />
-            </div>
-          </section>
-        )}
-
         <section role='group' aria-labelledby='notifications-unread-markers'>
           <h3 id='notifications-unread-markers'>
             <FormattedMessage id='notifications.column_settings.unread_notifications.category' defaultMessage='Unread notifications' />
diff --git a/app/javascript/mastodon/features/notifications_wrapper.jsx b/app/javascript/mastodon/features/notifications_wrapper.jsx
index 4b3efeb54e..50383d5ebf 100644
--- a/app/javascript/mastodon/features/notifications_wrapper.jsx
+++ b/app/javascript/mastodon/features/notifications_wrapper.jsx
@@ -1,13 +1,8 @@
-import Notifications from 'mastodon/features/notifications';
 import Notifications_v2 from 'mastodon/features/notifications_v2';
-import { selectUseGroupedNotifications } from 'mastodon/selectors/settings';
-import { useAppSelector } from 'mastodon/store';
 
 export const NotificationsWrapper = (props) => {
-  const optedInGroupedNotifications = useAppSelector(selectUseGroupedNotifications);
-
   return (
-    optedInGroupedNotifications ? <Notifications_v2 {...props} /> : <Notifications {...props} />
+    <Notifications_v2 {...props} />
   );
 };
 
diff --git a/app/javascript/mastodon/features/ui/components/navigation_panel.jsx b/app/javascript/mastodon/features/ui/components/navigation_panel.jsx
index 407276d126..0ca21e8976 100644
--- a/app/javascript/mastodon/features/ui/components/navigation_panel.jsx
+++ b/app/javascript/mastodon/features/ui/components/navigation_panel.jsx
@@ -37,7 +37,6 @@ import { timelinePreview, trendsEnabled } from 'mastodon/initial_state';
 import { transientSingleColumn } from 'mastodon/is_mobile';
 import { canManageReports, canViewAdminDashboard } from 'mastodon/permissions';
 import { selectUnreadNotificationGroupsCount } from 'mastodon/selectors/notifications';
-import { selectUseGroupedNotifications } from 'mastodon/selectors/settings';
 
 import ColumnLink from './column_link';
 import DisabledAccountBanner from './disabled_account_banner';
@@ -65,19 +64,17 @@ const messages = defineMessages({
 });
 
 const NotificationsLink = () => {
-  const optedInGroupedNotifications = useSelector(selectUseGroupedNotifications);
-  const count = useSelector(state => state.getIn(['notifications', 'unread']));
-  const intl = useIntl();
 
-  const newCount = useSelector(selectUnreadNotificationGroupsCount);
+  const count = useSelector(selectUnreadNotificationGroupsCount);
+  const intl = useIntl();
 
   return (
     <ColumnLink
       key='notifications'
       transparent
       to='/notifications'
-      icon={<IconWithBadge id='bell' icon={NotificationsIcon} count={optedInGroupedNotifications ? newCount : count} className='column-link__icon' />}
-      activeIcon={<IconWithBadge id='bell' icon={NotificationsActiveIcon} count={optedInGroupedNotifications ? newCount : count} className='column-link__icon' />}
+      icon={<IconWithBadge id='bell' icon={NotificationsIcon} count={count} className='column-link__icon' />}
+      activeIcon={<IconWithBadge id='bell' icon={NotificationsActiveIcon} count={count} className='column-link__icon' />}
       text={intl.formatMessage(messages.notifications)}
     />
   );
diff --git a/app/javascript/mastodon/initial_state.js b/app/javascript/mastodon/initial_state.js
index cf33b12dd9..60b35cb31a 100644
--- a/app/javascript/mastodon/initial_state.js
+++ b/app/javascript/mastodon/initial_state.js
@@ -43,7 +43,6 @@
  * @property {boolean=} use_pending_items
  * @property {string} version
  * @property {string} sso_redirect
- * @property {boolean} force_grouped_notifications
  */
 
 /**
@@ -119,7 +118,6 @@ export const criticalUpdatesPending = initialState?.critical_updates_pending;
 // @ts-expect-error
 export const statusPageUrl = getMeta('status_page_url');
 export const sso_redirect = getMeta('sso_redirect');
-export const forceGroupedNotifications = getMeta('force_grouped_notifications');
 
 /**
  * @returns {string | undefined}
diff --git a/app/javascript/mastodon/locales/en.json b/app/javascript/mastodon/locales/en.json
index 1de2dce440..7f2e88d440 100644
--- a/app/javascript/mastodon/locales/en.json
+++ b/app/javascript/mastodon/locales/en.json
@@ -559,8 +559,6 @@
   "notifications.column_settings.admin.report": "New reports:",
   "notifications.column_settings.admin.sign_up": "New sign-ups:",
   "notifications.column_settings.alert": "Desktop notifications",
-  "notifications.column_settings.beta.category": "Experimental features",
-  "notifications.column_settings.beta.grouping": "Group notifications",
   "notifications.column_settings.favourite": "Favorites:",
   "notifications.column_settings.filter_bar.advanced": "Display all categories",
   "notifications.column_settings.filter_bar.category": "Quick filter bar",
diff --git a/app/javascript/mastodon/selectors/settings.ts b/app/javascript/mastodon/selectors/settings.ts
index 22e7c13b93..93276c6692 100644
--- a/app/javascript/mastodon/selectors/settings.ts
+++ b/app/javascript/mastodon/selectors/settings.ts
@@ -1,4 +1,3 @@
-import { forceGroupedNotifications } from 'mastodon/initial_state';
 import type { RootState } from 'mastodon/store';
 
 /* eslint-disable @typescript-eslint/no-unsafe-call, @typescript-eslint/no-unsafe-member-access */
@@ -26,10 +25,6 @@ export const selectSettingsNotificationsQuickFilterAdvanced = (
 ) =>
   state.settings.getIn(['notifications', 'quickFilter', 'advanced']) as boolean;
 
-export const selectUseGroupedNotifications = (state: RootState) =>
-  forceGroupedNotifications ||
-  (state.settings.getIn(['notifications', 'groupingBeta']) as boolean);
-
 export const selectSettingsNotificationsShowUnread = (state: RootState) =>
   state.settings.getIn(['notifications', 'showUnread']) as boolean;
 
diff --git a/app/serializers/initial_state_serializer.rb b/app/serializers/initial_state_serializer.rb
index 25a352806f..13f332c95c 100644
--- a/app/serializers/initial_state_serializer.rb
+++ b/app/serializers/initial_state_serializer.rb
@@ -109,7 +109,6 @@ class InitialStateSerializer < ActiveModel::Serializer
       trends_as_landing_page: Setting.trends_as_landing_page,
       trends_enabled: Setting.trends,
       version: instance_presenter.version,
-      force_grouped_notifications: ENV['FORCE_GROUPED_NOTIFICATIONS'] == 'true',
     }
   end