ComfyUi-ConditioningNoiseInjection

A custom node for ComfyUI that injects controlled noise into conditioning embeddings (like prompts) for a portion of the diffusion process.

✨ Use case

• Some models such as Z-Image Turbo exhibit low seed variance, meaning they generate very similar images even when the seed changes.

• This node adds noise directly to the conditioning embeddings at the start of denoising, then restores the clean conditioning once the specified threshold is reached.

• By perturbing the conditioning instead of the latent, you can:

  • Increase compositional diversity
  • Better preserve prompt adherence

<img src="https://github.com/user-attachments/assets/98baeead-5ca5-4bdb-97bb-dfdbd1174aae" width="700" />

📥 Installation

Navigate to the ComfyUI/custom_nodes folder, open cmd and run:

git clone https://github.com/BigStationW/ComfyUi-ConditioningNoiseInjection

Restart ComfyUI after installation.

🛠️ Usage

<img src="https://github.com/user-attachments/assets/0bd62054-c061-4b87-8bea-bbebafe91bf1" width="700" />

An example workflow (for Z-image turbo) can be found here.