These wallpapers are based on two system apps: ‘Cinematic Wallpaper’ and ‘Android System Intelligence’. The former is already pre-installed in Android 14, and the problem here is with the second app.
Android System Intelligence (ASI) shipped with Android 14 is version U.0.beta and doesn’t contain the necessary com.google.android.apps.miphone.aiai.app.wallpapereffects.AiAiWallpaperEffectsGenerationService. It is the one responsible for the AI component of creating the wallpaper with the parallax effect. At the same time, the ASI in Android 13 has version T.26, which contains the necessary service*.
You won’t be able to install ASI version T.26 on Android 14, because logically it’s an earlier version than U.0.beta. You will have to wait for Google to release an ASI update for Android 14 with the required service.
*In addition to the service, some server flags are also needed here.