In the video titled “Meta New Models – SAM 2.1, Spirit LM, MEXMA and Mo” by Prompt Engineering, the host discusses the latest AI models released by Meta, including SAM 2.1 for advanced image segmentation, MetaSpirit LM for speech and text integration, LayerSkip for faster inference, and MetaLingua for efficient model training. The video highlights the significance of these models in advancing AI technology and their applications in various fields. The host explains the functionality of each model and emphasizes the importance of open-source AI in driving innovation. The video also touches on how these models can enhance machine intelligence and improve user experiences.