# H Company — Lab Notes: Post-training Nemotron 3.5 Super VL 120B-A12B for computer use

- Company: H Company (hcompany.ai)
- Announced: 2026-10-15
- Category: research-paper
- Coverage: not counted
- Announcement: yes
- Group: announcements
- Source: https://hcompany.ai/newsroom/lab-notes-nemotron-3.5-super-vl
- Record: https://forck.live/items/22909-lab-notes-post-training-nemotron-3-5-super-vl-120b-a12b-for-computer-use
- Subject: Holo
- Models affected: Nemotron 3.5 Super VL, Holotron4-Super-Preview

H Company published a research note detailing the post-training of NVIDIA's Nemotron 3.5 Super VL 120B-A12B vision model for computer use. Their resulting checkpoint, Holotron4-Super-Preview, improved on the base model across benchmarks including OSWorld (+25.1), OSWorld 2.1 (+12.0), and AutomationBench (+17.9). The recipe involved supervised fine-tuning, weight merging with the base model, and two reinforcement-learning experts merged back in.

## Evidence

Verbatim from https://hcompany.ai/newsroom/lab-notes-nemotron-3.5-super-vl:

> Our latest checkpoint, Holotron4-Super-Preview, improves on the base model across computer-use tasks involving GUI, MCP/API and code use: OSWorld (+25.1), OSWorld 2.1 (+12.0) and AutomationBench (+17.9).

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