Holo4
Hcompany released Holo4, a family of agentic models in two sizes: a 27B dense model and a 35B MoE (35B-A3B) model, plus an updated Holotron4 Nano. They work across GUIs, code, MCP, and APIs, and are available through the H Models API with open weights on Hugging Face.
For buildersEvaluate Holo4 through the H Models API on a multi-step task that mixes screen interaction, code execution, and API tool calls, since it is built to switch between interfaces within one workflow.