anuj0456/OpenArch
PyTorch implementations of modern open-source LLM architectures (Llama, Qwen, DeepSeek, Gemma, GPT-OSS, Kimi, and more) — written from scratch for readability and learning, based on Sebastian Raschka's LLM Architecture Gallery.
About the project
Educational PyTorch implementations of modern open-source LLM architectures (Llama, Qwen, DeepSeek, Gemma, GPT-OSS, Kimi, and more), written from scratch with one readable file per model for comparing architectural choices.
Useful for
- Study how attention, MoE, and normalization work in a specific model from a single file
- Compare architectural choices across LLMs side by side for an article or talk
- Contribute an implementation of an uncovered model from the LLM Architecture Gallery
README summarized by DeepSeek V4.1 Flash. Details may be inaccurate.
Why it’s trending
- 7 stars so far today, about 9 expected by the end of the day.
- The spike has held for 3 days in a row — not a one-off blip.
- Hacker News: “OpenArch – PyTorch implementations of modern LLM architectures” — 139 points, 4 days ago.
- Recent forks include notable developers: @ccckmit (675 followers), @pjt3591oo (382 followers).
Stars per day
Bars are daily stars, the line is the usual pace. Red marks spike days.
Numbers
- Total stars
- 397
- Stars in a day
- 9
- Forks
- 34
- Issues and pull requests
- 17
- Watchers
- 4
- Language
- Python
- License
- MIT
- Created
- May 27, 2026
- Last push
- September 18, 2026
Star trust
Growth looks organic: forks and discussion are in line with active projects, and stars arrive unevenly, the way people give them.
These are heuristics, not a verdict: we judge by the repository’s behavior, not by a list of stargazers.
Hacker News discussions
- OpenArch – PyTorch implementations of modern LLM architectures139 points, September 14, 2026
Spotted in
- September 18, 2026Spotted on Hacker News
- September 17, 2026Spotted on Hacker News
- September 16, 2026Spotted on Hacker News
- September 15, 2026Spotted on Hacker News
- September 14, 2026Spotted on Hacker News
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