Z-Image Turbo - Simple T2I Workflow + Ultimate Upscaler
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Model description
β‘ Z-Image Turbo
Simple Text 2 Image Workflow + Ultimate SD Upscaler
Z-Image Turbo is a fast, distilled, powerful and highly efficient image generation model with 6B parameters. The strength of this model lies in its ability to generate photorealistic images. But even though the model follows prompts very well, the output still isnβt premium in terms of quality. We still need an upscaling process here to make the images presentable. This is where this workflow comes in, including the well-known Ultimate SD Upscaler.
π What do you need to get started right away?
This Workflow - just download it and load it into ComfyUI
The new Z-Image Model: z_image_turbo_bf16.safetensors (place in \models\diffusion_models\)
The text encoder file: qwen_3_4b.safetensors (place in \models\text_encoders\)
The VAE file: ae.safetensors (place in \models\vae\)
If you used FLUX before then you already have the ae.safetensors file and dont need to download it again.
You can also use the fp8 checkpoint if you run a gpu with 8gb of vram.
β Do I need some special nodes to run this workflow?
No, the nodes inside the workflow are all standard nodes that should be already installed on your ComfyUI. If ComfyUI still indicates a missing node, just install it and restart briefly.
π οΈ Why the Text Encoder (Positive Prompt) is connected to negative and positive on the KSampler Node?
If the CFG value is set to 1.0 the negative prompt is ignored. This is one of the reasons why the model is so fast. This is intentional and not a mistake. Other workflows are ignoring this fact. Simply enter your positive prompt and you're good to go!
π‘ Usage Tips:
Simply set the desired resolution on the left, select your preferred upscaler on the far right and start generating.
Feel free to experiment with the denoise and cfg values ββin the ultimate sd upscale node to get the perfect result. Also try out different upscale models.
You don't need to go higher than 10 steps with this model. It is a 8 Steps Model. It will not generate better images if you go higher. Just leave it on 8, 9 or max 10 steps.
I like to have the option to directly select the aspect ratio (e.g. 5:7 or 9:16) in the node. If you prefer to enter the resolution manually simply disconnect or delete the "Base Resolution Node". Afterwards you can enter your desired resolution in the "latent image" node.
If you have a question or comment about the workflow feel free to leave a post in the comment section.
Have fun and feel free to post your generated images in the gallery below! π
