One Open Source Project a Day (No. 62): UI-TARS-Desktop - ByteDance's Open-Source Multimodal GUI Agent Stack

Introduction "See the screen, understand the task, take the action." This is the No.62 article in the "One Open Source Project a Day" series. Today, we are exploring UI-TARS-Desktop . The AI agent projects we have covered recently—OpenHarness, Symphony, Agent Skills—all operate within the "code world": files, APIs, terminal commands. UI-TARS-Desktop does something fundamentally different: it lets AI directly control a real desktop GUI —not through code, not via API calls, but by clicking buttons