Apple subsidiary Claris tests Harbor app to transform macs into local AI servers

Apple's wholly-owned subsidiary, Claris, is currently testing a new application named Harbor. This software is designed to enable Apple silicon Macs to function as local AI servers, providing on-device AI capabilities to users without requiring complex manual setup. Harbor supports running AI models on a single Apple silicon Mac, or it can utilize the Thunderbolt 5 interface to connect multiple Macs for running larger-scale AI models. This multi-device capability is supported by the inclusion of Thunderbolt 5 RDMA in macOS Tahoe 26.2, which enhances data transfer speeds across clustered devices. The application automatically detects Thunderbolt 5 hardware and allows users to browse and download open-weight models. However, it is important to note that Harbor remains in an early access phase and is not yet available to the general public; its previous listing on the App Store has since been removed.