---
title: Qwen-Image-2.1 Prompt Enhancer
emoji: ✍️
colorFrom: indigo
colorTo: pink
sdk: gradio
sdk_version: 6.28.0
app_file: app.py
short_description: Official prompt rewriters for Qwen-Image-2.1, kept warm
python_version: "3.12"
startup_duration_timeout: 1h
license: other
license_name: qwen-research
license_link: https://huggingface.co/Qwen/Qwen-Image-2.1/blob/main/LICENSE
---

# Qwen-Image-2.1 Prompt Enhancer

Prompt-enhancement service behind the [Qwen-Image-2.1](https://huggingface.co/Qwen/Qwen-Image-2.1)
demo. It hosts both official rewriting models on one ZeroGPU worker:

| Model | Used when |
|---|---|
| [`Qwen/Qwen-Image-2.1-PE-T2I`](https://huggingface.co/Qwen/Qwen-Image-2.1-PE-T2I) | no input images — expands a short brief into a long English prompt + aspect ratio |
| [`Qwen/Qwen-Image-2.1-PE-I2I`](https://huggingface.co/Qwen/Qwen-Image-2.1-PE-I2I) | input images present — turns a vague edit instruction into a precise directive |

Both are loaded at module scope and moved to CUDA eagerly, so ZeroGPU packs them at
startup and they stay resident on the worker across calls — no per-request cold load.

## API

```python
from gradio_client import Client, handle_file

client = Client("hugging-apps/qwen-image-2-1-prompt-enhancer")
rewritten, wh_ratio, raw, seed, elapsed = client.predict(
    prompt="a corgi playing guitar in the rain",
    image_paths=[],                    # or [handle_file("photo.png"), ...] for editing
    api_name="/enhance",
)
```

## License and attribution

The rewriting models are released under the
[Qwen Research License Agreement](https://huggingface.co/Qwen/Qwen-Image-2.1/blob/main/LICENSE) —
research / evaluation use only.

> Qwen is licensed under the Qwen RESEARCH LICENSE AGREEMENT, Copyright (c) 2026
> Hangzhou Tongyi Laboratory Technology Co., Ltd. All Rights Reserved.