ComfyUi-ConditioningTimestepSwitch

A custom node for ComfyUI that allows temporal switching between prompts.

✨ 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 starts the denoising process with an empty (or alternative) prompt and then switches to your desired prompt after a specified timestep threshold.

• By delaying the main prompt, you introduce more randomness early in the diffusion process, which can significantly improve output diversity.

<img src="https://github.com/user-attachments/assets/c49fe009-dace-4479-8c40-fcc2e68e270f" width="700" />

📥 Installation

Navigate to the ComfyUI/custom_nodes folder and run the following command in your terminal:

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

🛠️ Usage

<img src="https://github.com/user-attachments/assets/a305dd07-ef65-4040-b581-7c6bc9fd3b8b" width="700" />

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