Meta releases SAM 3.1 for real-time multi-object video tracking
Meta released SAM 3.1 as a drop-in replacement for SAM 3, adding object multiplexing that tracks as many as 16 objects in one forward pass. Meta said the update doubled throughput from 16 to 32 frames per second for medium-object videos on one H100 GPU and published the checkpoint and updated code.
Why it matters: Real-time open video segmentation and tracking becomes feasible with fewer GPU resources, widening practical use in media, robotics, monitoring, and annotation.