ByteDanceSeedreamNode - ComfyUI Built-in Node Documentation

Complete documentation for the ByteDanceSeedreamNode node in ComfyUI. Learn its inputs, outputs, parameters and usage.

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The ByteDance Seedream 4.5 & 5.0 node provides unified text-to-image generation and precise single-sentence editing capabilities at up to 4K resolution. It can create new images from text prompts or edit existing images using text instructions. The node supports both single image generation and sequential generation of multiple related images.

Inputs

Parameter	Data Type	Required	Range	Description
model	STRING	Yes	”seedream 5.0 lite" "seedream-4-5-251128" "seedream-4-0-250828”	The Seedream model to use for generation.
prompt	STRING	Yes	-	Text prompt for creating or editing an image. Must be at least 1 character long.
image	IMAGE	No	-	Input image(s) for image-to-image generation. Reference image(s) for single or multi-reference generation. Maximum of 14 reference images for seedream-5-0-260128, or 10 for other models.
size_preset	STRING	No	Multiple options available	Pick a recommended size. Select Custom to use the width and height below. Default: first preset from RECOMMENDED_PRESETS_SEEDREAM_4.
width	INT	No	1024 to 6240 (step 2)	Custom width for image. Value is working only if size_preset is set to Custom. Default: 2048.
height	INT	No	1024 to 4992 (step 2)	Custom height for image. Value is working only if size_preset is set to Custom. Default: 2048.
sequential_image_generation	STRING	No	”disabled" "auto”	Group image generation mode. “disabled” generates a single image. “auto” lets the model decide whether to generate multiple related images (e.g., story scenes, character variations). Default: “disabled”.
max_images	INT	No	1 to 15 (step 1)	Maximum number of images to generate when sequential_image_generation=‘auto’. Total images (input + generated) cannot exceed 15. Default: 1.
seed	INT	No	0 to 2147483647 (step 1)	Seed to use for generation. Default: 0.
watermark	BOOLEAN	No	-	Whether to add an “AI generated” watermark to the image. Default: False.
fail_on_partial	BOOLEAN	No	-	If enabled, abort execution if any requested images are missing or return an error. Default: True.

Notes on parameter constraints:

• The minimum image resolution depends on the selected model: 3.68MP for seedream-4-5 and seedream-5-0 models, 0.92MP for seedream-4-0 models.
• The maximum image resolution is 10.4MP for seedream-5-0 models and 16.78MP for other models.
• Reference images must have an aspect ratio between 1:3 and 3:1.
• When sequential_image_generation is set to “auto”, the total number of input images plus max_images cannot exceed 15.
• The width and height parameters are only used when size_preset is set to “Custom”.

Outputs

Output Name	Data Type	Description
IMAGE	IMAGE	Generated image(s) based on the input parameters and prompt. Returns a single image tensor or a batch of image tensors if multiple images are generated.

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