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title: QwenScope
emoji: 🔥
colorFrom: indigo
colorTo: gray
sdk: gradio
sdk_version: 5.49.1
python_version: '3.12'
app_file: app.py
pinned: false
license: apache-2.0
---
# QwenScope Feature Explorer
Interactive Sparse Autoencoder (SAE) feature exploration and steering demo for Qwen3.5-2B, powered by Hugging Face ZeroGPU.
## Features
- **Feature Comparison**: Compare SAE feature activations between two text examples across all transformer layers.
- **Feature Steering**: Inject SAE decoder vectors into the residual stream to steer model generation behavior.
## Model Info
| Property | Value |
|---|---|
| Base model | [Qwen/Qwen3.5-2B](https://huggingface.co/Qwen/Qwen3.5-2B) |
| SAE width | 32,768 |
| Top-K | 100 |
| Layers | 0 – 23 (24 total) |
| Hidden size | 2,048 |
## Citation
```bibtex
@misc{qwenscope,
title = {{Qwen-Scope}: Turning Sparse Features into Development Tools for Large Language Models},
author = {{Qwen Team}},
month = {April},
year = {2026}
}
```
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