Flux2Scheduler - ComfyUI Built-in Node Documentation - ComfyUI

Flux2Scheduler generates a sequence of noise levels (sigmas) for the denoising process, specifically tailored for the Flux model. It calculates a schedule based on the number of denoising steps and the dimensions of the target image, which influences the progression of noise removal during image generation.

Inputs

Parameter	Description	Data Type	Required	Range
`steps`	The number of denoising steps to perform. A higher value typically leads to more detailed results but takes longer to process (default: 20).	INT	Yes	1 to 4096
`width`	The width of the image to be generated, in pixels. This value influences the noise schedule calculation (default: 1024).	INT	Yes	16 to 16384
`height`	The height of the image to be generated, in pixels. This value influences the noise schedule calculation (default: 1024).	INT	Yes	16 to 16384

Note: The schedule is computed from the image sequence length, which is derived from width and height as (width * height) / 256, reflecting the model’s 16x latent downsampling. Larger images produce longer sequences, which shifts the noise schedule accordingly.

Outputs

Output Name	Description	Data Type
`sigmas`	A sequence of noise level values (sigmas) that define the denoising schedule for the sampler.	SIGMAS

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