Holo3: How a 10B-Parameter Open Model Beat GPT-5.4 and Opus 4.6 at Controlling Desktops

H Company's Holo3 sets a new state of the art on OSWorld-Verified at 78.85% — beating proprietary models with a fraction of the active parameters. The open-source 3B-active variant scores 77.8% under Apache 2.0. Here's the architecture, training pipeline, and what it means for desktop automation.