diff --git a/go/quickstep/src/com/android/quickstep/GoActivityControlHelper.java b/go/quickstep/src/com/android/quickstep/GoActivityControlHelper.java
index 7078871..8b6f8bc 100644
--- a/go/quickstep/src/com/android/quickstep/GoActivityControlHelper.java
+++ b/go/quickstep/src/com/android/quickstep/GoActivityControlHelper.java
@@ -34,6 +34,11 @@
     }
 
     @Override
+    public void onAssistantVisibilityChanged(float visibility) {
+        // Go does not support assistant visibility transitions.
+    }
+
+    @Override
     public HomeAnimationFactory prepareHomeUI(T activity) {
         // Go does not support gestures from app to home.
         return null;
diff --git a/go/quickstep/src/com/android/quickstep/TouchInteractionService.java b/go/quickstep/src/com/android/quickstep/TouchInteractionService.java
index 80e1325..70739ef 100644
--- a/go/quickstep/src/com/android/quickstep/TouchInteractionService.java
+++ b/go/quickstep/src/com/android/quickstep/TouchInteractionService.java
@@ -80,6 +80,11 @@
             // TODO handle assistant
         }
 
+        @Override
+        public void onAssistantVisibilityChanged(float visibility) {
+            // TODO handle assistant
+        }
+
         /** Deprecated methods **/
         public void onQuickStep(MotionEvent motionEvent) { }
 
diff --git a/quickstep/recents_ui_overrides/src/com/android/quickstep/FallbackActivityControllerHelper.java b/quickstep/recents_ui_overrides/src/com/android/quickstep/FallbackActivityControllerHelper.java
index 73fcf78..31d6042 100644
--- a/quickstep/recents_ui_overrides/src/com/android/quickstep/FallbackActivityControllerHelper.java
+++ b/quickstep/recents_ui_overrides/src/com/android/quickstep/FallbackActivityControllerHelper.java
@@ -75,6 +75,11 @@
         // TODO:
     }
 
+    @Override
+    public void onAssistantVisibilityChanged(float visibility) {
+        // TODO:
+    }
+
     @NonNull
     @Override
     public HomeAnimationFactory prepareHomeUI(RecentsActivity activity) {
diff --git a/quickstep/recents_ui_overrides/src/com/android/quickstep/LauncherActivityControllerHelper.java b/quickstep/recents_ui_overrides/src/com/android/quickstep/LauncherActivityControllerHelper.java
index df2b687..766f484 100644
--- a/quickstep/recents_ui_overrides/src/com/android/quickstep/LauncherActivityControllerHelper.java
+++ b/quickstep/recents_ui_overrides/src/com/android/quickstep/LauncherActivityControllerHelper.java
@@ -45,6 +45,7 @@
 import com.android.launcher3.LauncherInitListener;
 import com.android.launcher3.LauncherState;
 import com.android.launcher3.LauncherStateManager;
+import com.android.launcher3.Workspace;
 import com.android.launcher3.allapps.AllAppsTransitionController;
 import com.android.launcher3.allapps.DiscoveryBounce;
 import com.android.launcher3.anim.AnimatorPlaybackController;
@@ -98,6 +99,14 @@
         DiscoveryBounce.showForOverviewIfNeeded(activity);
     }
 
+    @Override
+    public void onAssistantVisibilityChanged(float visibility) {
+        Launcher launcher = getCreatedActivity();
+        if (launcher != null) {
+            launcher.setQuickSearchBarAlpha(1f - visibility);
+        }
+    }
+
     @NonNull
     @Override
     public HomeAnimationFactory prepareHomeUI(Launcher activity) {
diff --git a/quickstep/recents_ui_overrides/src/com/android/quickstep/TouchInteractionService.java b/quickstep/recents_ui_overrides/src/com/android/quickstep/TouchInteractionService.java
index 60ba27d..311824f 100644
--- a/quickstep/recents_ui_overrides/src/com/android/quickstep/TouchInteractionService.java
+++ b/quickstep/recents_ui_overrides/src/com/android/quickstep/TouchInteractionService.java
@@ -133,6 +133,14 @@
             mAssistantAvailable = available;
         }
 
+        @Override
+        public void onAssistantVisibilityChanged(float visibility) {
+            MAIN_THREAD_EXECUTOR.execute(() -> {
+                mOverviewComponentObserver.getActivityControlHelper()
+                        .onAssistantVisibilityChanged(visibility);
+            });
+        }
+
         /** Deprecated methods **/
         public void onQuickStep(MotionEvent motionEvent) { }
 
diff --git a/quickstep/src/com/android/quickstep/ActivityControlHelper.java b/quickstep/src/com/android/quickstep/ActivityControlHelper.java
index 418f7f4..a71b7bb 100644
--- a/quickstep/src/com/android/quickstep/ActivityControlHelper.java
+++ b/quickstep/src/com/android/quickstep/ActivityControlHelper.java
@@ -53,6 +53,8 @@
 
     void onSwipeUpComplete(T activity);
 
+    void onAssistantVisibilityChanged(float visibility);
+
     @NonNull HomeAnimationFactory prepareHomeUI(T activity);
 
     AnimationFactory prepareRecentsUI(T activity, boolean activityVisible,
diff --git a/src/com/android/launcher3/Launcher.java b/src/com/android/launcher3/Launcher.java
index 89236aa..f8d9959 100644
--- a/src/com/android/launcher3/Launcher.java
+++ b/src/com/android/launcher3/Launcher.java
@@ -408,6 +408,13 @@
         onIdpChanged(idp);
     }
 
+    public void setQuickSearchBarAlpha(float alpha) {
+        View qsbAllApps = findViewById(R.id.search_container_all_apps);
+        if (qsbAllApps != null) {
+            qsbAllApps.setAlpha(alpha);
+        }
+    }
+
     private void onIdpChanged(InvariantDeviceProfile idp) {
         mUserEventDispatcher = null;