LLM Neuroanatomy: Topping the Leaderboard Without Changing a Weight

AI
LLMs
inference
links
Duplicate a block of middle transformer layers and run them twice at inference. The power of thinking it over twice.
Author

synesis

Published

March 24, 2026

Diagram from the dnhkng.github.io post showing the duplicated middle-layer block.

Improve an LLM without training by duplicating a specific block of middle transformer layers and running them twice during inference. The power of thinking it over twice [1].


References

[1] “LLM Neuroanatomy: How I Topped the LLM Leaderboard Without Changing a Single Weight.” dnhkng.github.io. https://dnhkng.github.io/posts/rys/

Originally posted on LinkedIn.