AI People Wiki

Builders & open source

Joshua Lochner

Working on Transformers.js, Hugging Face

Joshua Lochner works on Transformers.js at Hugging Face, a library that runs Transformers models directly in the browser without a server. Lochner wrote Hugging Face's announcement of Transformers.js v3 in 2024, which added WebGPU support, and co-wrote the v4 announcement in 2026. Lochner's GitHub profile describes the work as bringing machine learning to the web.1234

At a glance

Current role
Working on Transformers.js
Sector
Company
Work listed
1
Sources cited
8
Profile reviewed

Open-source work

Transformers.js, whose repository was created in February 2023 and is released under the Apache-2.0 license, lets developers run Hugging Face Transformers models directly in the browser with no need for a server. Lochner published releases ranging from the 2.0 alphas in May 2023 to the 4.3 releases in 2026, and wrote the Hugging Face blog posts announcing version 3, with WebGPU support and new models and tasks, and version 4.2534

Browser demos and other projects

Lochner's own GitHub repositories include browser demos built on these tools. Whisper Web runs speech recognition entirely in the browser, and Kokoro Web does the same for speech synthesis. Earlier projects include sponsorblock-ml, a model that detects sponsored segments and self-promotion in YouTube videos.678

Work and contributions

  • Transformers.js

    Authored Hugging Face's announcement of Transformers.js v3, which added WebGPU support, and co-authored the announcement of Transformers.js v4.34

Timeline

  1. Created sponsorblock-ml, a model for detecting sponsorships and promotions in YouTube videos.8
  2. Created Whisper Web, in-browser speech recognition built with Transformers.js.6
  3. Published the first Transformers.js 2.0 alpha releases.5
  4. Announced Transformers.js v3 with WebGPU support on the Hugging Face blog.3
  5. Created Kokoro Web for in-browser speech synthesis.7
  6. Co-wrote the Hugging Face announcement of Transformers.js v4.4

Where they work

Suggest a correction or removal

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References

8 sources · profile reviewed Oct 21, 2026 · data updated Oct 21, 2026

  1. xenova (Joshua Lochner) on GitHubGitHub · Official page · accessed Oct 21, 2026
  2. huggingface/transformers.js READMEHugging Face (GitHub repository) · Repository · accessed Oct 21, 2026
  3. Transformers.js v3: WebGPU Support, New Models & Tasks, and More…Hugging Face · Announcement · published Oct 22, 2024 · accessed Oct 21, 2026
  4. Transformers.js v4: Now Available on NPM!Hugging Face · Announcement · published Feb 9, 2026 · accessed Oct 21, 2026
  5. huggingface/transformers.js releasesHugging Face (GitHub repository) · Release notes · accessed Oct 21, 2026
  6. xenova/whisper-web (GitHub repository)GitHub · Repository · accessed Oct 21, 2026
  7. xenova/kokoro-web (GitHub repository)GitHub · Repository · accessed Oct 21, 2026
  8. xenova/sponsorblock-ml (GitHub repository)GitHub · Repository · accessed Oct 21, 2026