H Company ships Holo4, open-weight agents for any software interface

H Company detailed Holo4, a series of agentic models in 27B dense and 35B-A3B MoE sizes that operate software via GUI, code, MCP or direct API calls. The models are available on the H Models API and as open weights on Hugging Face in BF16, FP8, NVFP4 and 4-bit GGUF. Holo4 27B scored 61.7% on OSWorld 2.0 versus 81.8% for Opus 5.5.

• Holo4 comes in 27B dense and 35B-A3B MoE variants with open weights
• OSWorld 2.0: Holo4 27B scores 61.7%, Opus 5.5 81.8%, 35B-A3B 30.9%
• Trained on roughly 10,000 tasks from an internal Agentic Task Factory
• Holotron4 Nano built on Nvidia's Nemotron 3 Nano Omni