Apple's Claris Testing 'Harbor' App for Local AI on Macs

Apple's Claris subsidiary is testing Harbor, an early-access app that turns Apple silicon Macs into a private AI inference server for open-weight models, with data staying on local hardware. Harbor can cluster multiple Macs over Thunderbolt 5 to pool unified memory for larger models and higher concurrency, using RDMA support added in macOS Tahoe 26.2, and requires no manual configuration or command line. The App Store listing has been removed, and the sign-up page asks for a company name, suggesting a business focus.