Qwen-Scope: Official Sparse Autoencoders (SAEs) for Qwen 3.5 models

Qwen Team released Qwen-Scope, SAEs for Qwen 3.5 models from 2B to 35B MoE. It maps residual-stream features across all layers, including Feature #6159 for Chinese activation. The key point is feature-level debugging and steering; the license discourages removing safety filters.

Why it matters: HKR-H/K/R all pass: official Qwen SAEs are novel, concrete, and useful for interpretability work. This is not a new model release, so it stays in the 78–84 recommendation band.