Julien Chaumond
CTO of Hugging Face; added the Hub's local-apps registry and works on the hf command-line tool
- CTO, Hugging Face12
Julien Chaumond is CTO of Hugging Face. In the huggingface.js repository, Chaumond authored the 2024 pull request that added local apps, a registry that now lists local tools such as llama.cpp, LM Studio, and Ollama with the commands for running a Hub model in each, as well as an earlier one adding a parser for remotely hosted GGUF model files. Chaumond co-authored the 2025 announcement of hf, the Hugging Face command-line tool for downloading files from and uploading them to the Hub, and has committed changes to it in 2026. Chaumond is also an author of the Transformers paper.123468910
Work
Local apps on the Hugging Face Hub (external site: huggingface.co)
Authored huggingface.js pull request 659, merged in May 2024, which added local-apps.ts, a registry that now lists local applications such as llama.cpp, LM Studio, and Ollama with snippets for running a model in each. The Hub documentation describes picking a local app from a model page's "Use this model" menu and running the command it shows.345
GGUF parser in huggingface.js (external site: github.com)
Authored the March 2024 pull request that added a parser for GGUF files hosted remotely, read over HTTP range requests. A July 2026 commit by Chaumond added the Q2_0 quantization type to it to match llama.cpp.67
hf command-line tool (external site: github.com)
Co-authored the July 2025 post introducing hf, the redesigned Hugging Face CLI for downloading files from and uploading them to the Hub. The huggingface_hub commit history shows CLI changes by Chaumond in 2026, such as new hf subcommands.89
Transformers
Listed among the authors of the Transformers paper, which the library's README asks users to cite.1011
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