Apple’s Claris subsidiary is testing an app called Harbor , which turns Apple silicon Macs into a private AI server. Harbor works with a single Apple silicon Mac, but it also supports connecting multiple Mac computers over Thunderbolt 5 to pool unified memory for larger models. Apple added RDMA over Thunderbolt 5 with macOS Tahoe 26. 2, making clustering faster. Harbor detects devices connected over Thunderbolt 5 and lets users browse for, download, and load open-weight models. It’s described as an easy-to-use app with no manual configuration required. Harbor turns your Mac into a private AI inference server. Run open-weight models locally on Apple silicon—your data never leaves your hardware, and nothing reaches the cloud. Connect multiple Mac computers over Thunderbolt 5 to pool unified memory, enabling large models and higher concurrency than a single computer can handle alone. Set up in minutes, not hours. Harbor automatically detects your devices over Thunderbolt 5 to form a cluster. Plug in, start, and you’re running—no manual configuration, no command line, no infrastructure expertise required. Download and run models directly…
