Claris, a wholly owned subsidiary of Apple, is testing an app called Harbor that can transform Apple silicon Macs into local AI servers. The app supports running on a single Mac and can also connect multiple Macs via Thunderbolt 5 interfaces to run larger-scale AI models, leveraging the Thunderbolt 5 RDMA support newly added in macOS Tahoe 26.2 to achieve faster data transfer. Harbor can automatically detect Thunderbolt 5 devices, supports browsing and downloading open-weight models, and enables Macs to gain on-device AI capabilities without manual configuration. Harbor is currently in an early experience phase and is not open to the public; it previously appeared briefly on the App Store, and the related page has since been taken down.
