318 points102 comments
Qwen 3.8 reads and edits neural net weights on a laptop
What is Qwen 3.8 27B on my laptop can interpret model weights, too?
Simon Willison demonstrated that the open-source Qwen-3.8-27B model can examine a raw weight matrix and infer the network’s purpose. It can also modify a tiny fraction of those weights to boost performance, all without any gradient-based training.
Who it is for
Anyone looking to inspect or cheaply fine-tune models can try weight-space programming on their own hardware.