https://cdn.borisfx.com/borisfx/store/silhouette/2024-0/Silhouette-2024-WhatsNew.pdf

Matte Assist ML
Automatically generates a matte over time based on single or multiple
keyframed roto shapes or input mattes using machine learning object
segmentation and propagation.

Optical Flow ML
Generates machine learning powered optical flow data for use in one of the
Roto based node’s Flow Tracker: Roto, Roto Blend, Tracker, Power Mask,
Morph and Depth. Optical flow estimates per-pixel motion between frames and
can be used to track shapes and objects.

Retime ML
A machine learning motion estimation and retiming model that produces
smooth motion. Expands or contracts the timing of a selected range of frames.