H Company releases Holo4, open weights for an agent that drives your computer

H Company, the Paris-based agent startup, has published Holo4 on Hugging Face: a family of open-weight computer-use models, the kind of agent that operates a computer's interface the way a person would.

The release

• a 27-billion-parameter dense model and a 35B-A3B mixture-of-experts model
• BF16, FP8, NVFP4 and Q4 GGUF formats, plus hosted access through the H Models API
• licences differ: Holo4-27B is CC BY-NC 4.0 (non-commercial), built on Qwen3.8-27B; Holo4-35B-A3B is Apache 2.0, built on a Qwen3.6 MoE

The scores

In H Company's own harness, Holo4-27B scores 85.2% on OSWorld at about $0.08 per task. On the harder OSWorld 2.0 it scores 61.7% at $1.22 a task; the MoE model scores 30.9% at $0.61.

Unusually, H Company also published the evaluation trajectories, recordings of the models doing the tasks, so others can check the numbers rather than take them on trust.

Why it matters

This is exactly the kind of agent everyone else is building fences around, released for anyone to download. Nvidia's cage got the headlines; Holo4 got a quiet upload and almost no coverage. The capability is open and cheap, and that is what people will actually end up running.