PlatformNSFW
HiDream-Studio v0.1 hits 20-second Stable Diffusion inference on RTX 4090
Open-source PySide desktop app matches ComfyUI speeds with one-click Windows install and square-aspect-ratio optimization.
HiDream-Studio v0.1 is an open-source desktop application that runs Stable Diffusion inference through a PySide interface. Released this week on GitHub, the tool ships with a one-click Windows installer and achieves inference speeds competitive with ComfyUI—around 20 seconds per image on an RTX 4090.
The app bakes aspect-ratio preferences directly into the model checkpoint, optimizing for 2048×2048 and 1024×1024 outputs. Non-square resolutions can actually slow generation, an unusual constraint for Stable Diffusion tooling.
What stands out
- 01Desktop-native speed. Most Python-based UIs lag behind ComfyUI's node-graph execution, but HiDream-Studio reportedly matches ComfyUI's 20-second 4090 baseline without requiring a node editor.
- 02Baked aspect ratios. The model checkpoint itself is tuned for square outputs—2048×2048 and 1024×1024. Odd aspect ratios (portrait, landscape, widescreen) degrade performance, which limits flexibility but may explain the speed gains.
- 03Turnkey install. The GitHub repo includes
install.batfor Windows. Clone, double-click, run—no manual dependency wrangling. - 04PySide over web. The app uses PySide (Qt for Python) instead of a Gradio or Streamlit web interface, which can reduce overhead on local hardware.
- 05Open weights. The repo is MIT-licensed and the model checkpoint is distributed openly, making it a candidate for fine-tuning or integration into other pipelines.