Het verhaal
On 28 September 2026 Hcompany released Holo4 via the Hugging Face blog: a new series of generalist computer-use agents in 27B dense and 35B-A3B MoE sizes, plus an updated Holotron4 Nano. The models are trained to mix GUI actions, coding sandboxes, MCP and business APIs in a single harness rather than one interface only. On OSWorld 2.0 the 27B scores about 61.7% (vs ~81.8% for Opus 5.5) at much lower cost; AutomationBench results are similarly competitive with frontier closed models. Weights are on Hugging Face (BF16, FP8, NVFP4, 4-bit GGUF) and both sizes run on the H Models API; trajectories for public benchmarks are open-sourced.