TokenPrint: open-source interactive explorer for tokens, attention, hidden states and KV cache seeks contributors

Rich-Fruit-326 · reddit · 2026-09-10

TokenPrint is an open-source project to explore transformer/LLM internals interactively — tokens, embeddings, attention, hidden states, inference steps, KV cache, and architecture — beyond static diagrams.

It has reached 65+ GitHub stars with active issues, and the author is recruiting contributors: good first issues, advanced Python/PyTorch/Transformers work, React/Three.js visualization, GGUF/llama.cpp and local LLMs, UI/UX, and new ideas or criticism. Repo: Sudharsanselvaraj/Token-Print. He also asks what's missing from the ecosystem for understanding and debugging LLMs.

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