Holo4: A Model That Clicks, Codes and Calls Tools

Sam Witteveen
35,544 views •

How one open-weight model click through a GUI, write and run code, and call MCP tools, and also work out which one to use at each step. Thats Holo4 Thanks to Dell for Sponsoring the Compute #DellProPrecision #DellTech #NVIDIA #DellProMax Holo4 Blog: https://hcompany.ai/newsroom/holo4 Holo4 27B: https://huggingface.co/Hcompany/Holo4-27B Holo4 35B-A3B: https://huggingface.co/Hcompany/Holo4-35B-A3B Holotron4 Nano: https://huggingface.co/Hcompany/Holotron4-30B-A3B Trajectory Viewer: https://trajectories.hcompany.ai 2nd Channel: https://www.youtube.com/channel/UCUF7WtR4JpVbQqcQGrLeADw Twitter: https://x.com/Sam_Witteveen 🕵️ Interested in building LLM Agents? Fill out the form below Building LLM Agents Form: https://drp.li/dIMes 👨‍💻Github: https://github.com/samwit/llm-tutorials ⏱️Time Stamps: 00:00 Intro 01:24 Holo4 from H Company 02:08 Recap: how an agent loop works 02:52 Three lanes: GUI, code and tools 04:44 One model that works across interfaces 06:01 H's harness: hai-agents, Claude Code and MCP 06:23 The Holo4 model family 07:07 Weights, quantizations and the 54GB model 07:41 Benchmarks vs frontier models 08:52 Dense vs MoE: the big gap 09:35 The Agentic Task Factory 10:56 Training recipe and harness rebuild 12:07 Demo: GUI, MCP and code in action 15:57 Trajectories and the license

Keyboard shortcuts

On. Switch them off if they collide with your assistive tools; ? still opens this sheet.

Go to

Press g then the letter.

  • gh Latest
  • gs Sources
  • gm Media
  • gv Videos
  • gp Podcasts
  • gc Calendar
  • gd Decoder
  • gz Dataviz
  • ga Datasets
  • gb Blog
  • gk Markets
  • gj Careers
  • gn Prompt Notebook

On this page

  • / Focus search, where there is one
  • t Back to top
  • ? This list
  • Esc Close