AI sources.twitter 3h ago 2 min read
Meta said on March 27, 2026 that SAM 3.1 is a drop-in update to SAM 3 that improves video processing efficiency through object multiplexing. The project's release notes say the update introduces shared-memory joint multi-object tracking, new checkpoints, and about 7x speedup at 128 objects on a single H100 compared with the November 2025 SAM 3 release.