GPT-2 Internal States Fully Decoded
Revolutionary-Lab882 · reddit · 2026-07-11
BABEL codec claims to have fully decoded the internal states of the production language model GPT-2 small into English for the first time, and can also write English back into the model.
The author states that this method can reconstruct approximately 94.7% of the behavior across various layer depths and text scenarios. Furthermore, the project is entirely open source, including the paper, vocabulary, grammar table, encoding/decoding weights, reproduction scripts, and a demo.
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