Apple ($AAPL) develops 'Harbor', a local AI app that connects multiple Macs

Apple ($AAPL) is reportedly developing Harbor, a local AI app for Apple-silicon Macs that runs and manages open-weight AI models on-device and links multiple Macs via Thunderbolt 5, turning them into personal AI inference servers. The app lets users find, download, run and manage models, and processes input data locally rather than sending it to the cloud. The report, based on an app description shared with 9to5Mac, positions the Mac as a private inference hub for open-weight models whose trained parameters are publicly downloadable. The move matters because it keeps Apple's AI push on-device and could reduce reliance on cloud compute, while multi-Mac clustering via Thunderbolt 5 hints at a scalable local inference setup. What to watch next: official confirmation and a release timeline from Apple, plus which open-weight models Harbor supports at launch.