Holo4: powering generalist computer-use agents
Holo4 is a new generalist agent that can click, code, and call APIs on any platform, beating big models on real workflows while costing less.
Why Now
Holo4 was released by Hcompany on SeptemberâŻ28âŻ2026 as a new series of agentic models built on Qwen and Nemotron foundations.
What Happened
Holo4 comes in 27B dense and 35BâA3B MixtureâofâExperts variants, plus Holotron4 Nano. It scores 61.7% on OSWorldâŻ2.0 versus 81.8% for OpusâŻ5.5, and 30.9% for 35BâA3B, yet uses far fewer parameters and lower cost. The model was trained with supervised and reinforcement learning on ~10,000 tasks from the Agentic Task Factory and can run on desktops, web, Android, code sandboxes, and business APIs.
Why It Matters
By unifying GUI, code, and API interactions, Holo4 enables singleâmodel deployment across diverse business workflows, reducing engineering overhead and inference cost. It shows that smaller open models can compete with closedâsource leaders on complex, longâhorizon tasks.
The Limitation
Performance on private benchmarks and longâterm reliability are not yet publicly validated; cost estimates depend on token usage and cloud pricing.
What You Can Do
Try Holo4 via the H Models API to run a multiâinterface task like building a 3D model in FreeCAD or automating a web app.
Source
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The article discusses a new generalist agent model, a core AI development.