Holo3.1 represents H Company’s advanced suite of swift and localized computer-use agents designed for seamless operation across web, desktop, and mobile platforms, while ensuring better integration within various agent frameworks and deployment targets. Drawing from the Qwen family, Holo3.1 significantly enhances reliability in the diverse environments where these agents are utilized, tackling the distribution changes that arise on mobile devices, alternative agent frameworks, and varied execution environments. The latest version broadens Holo3’s functionality, going beyond mere browser and desktop control, with notable advancements in mobile automation; for instance, the performance in AndroidWorld has surged from 67% to 79.3% for the 35B-A3B model, while the smaller 4B and 9B variants have also shown improvements from 58% to 71%. In addition, Holo3.1 brings forth native support for function-calling protocols alongside structured JSON outputs, which aids teams in integrating the model into third-party agent ecosystems, achieving almost identical performance between function-calling and native execution. This release marks a significant step in enhancing the versatility and effectiveness of computer-use agents across multiple platforms.