arkennemasis fal · Flux Pro Kontext Max Multi · $0.08/image

Experimental version of FLUX.1 Kontext [max] with multi image handling capabilities Pricing (from fal, 2026-09-29): $0.08 per image (fal's billing unit). Model page: https://fal.ai/models/fal-ai/flux-pro/kontext/max/multi Key: FAL_KEY in the .env next to run_nvidia_gpu.bat. Results are saved in output/fal/fal-ai_flux-pro_kontext_max_multi/.

By Hishamahmer·Created 2 months ago·Updated 4 days ago· 10

image_1
image_2
image_3
image_4
image_5
image_6

images
image_paths
seed
has_nsfw_concepts
prompt
timings
info

◄prompt►

◄seed-1►

◄guidance_scale3.50►

◄num_images1►

◄output_formatjpeg►

◄safety_tolerance2►

◄enhance_promptfalse►

◄aspect_ratio(not set)►

◄max_cost_usd20.0►

◄reuse_identical_runtrue►

◄extra_json►

◄max_concurrent1►

Categoryarkennemasis/fal/Image/Flux

Inputs (18)

Name	Type	Default	Description
prompt	STRING		The prompt to generate an image from.
seed	INT	-1-1–2147483647	The same seed and the same prompt given to the same version of the model will output the same image every time. -1 leaves it to the model.
guidance_scale	FLOAT	3.501–20	The CFG (Classifier Free Guidance) scale is a measure of how close you want the model to stick to your prompt when looking for a related image to show you.
num_images	INT	11–4	The number of images to generate.
output_format	COMBO	jpeg	The format of the generated image.
safety_tolerance	COMBO	2	The safety tolerance level for the generated image. 1 being the most strict and 5 being the most permissive.
enhance_prompt	BOOLEAN	false	Whether to enhance the prompt for better results.
aspect_ratio	COMBO	(not set)	The aspect ratio of the generated image. '(not set)' leaves it to the model.
image_1	IMAGE		Image prompt for the omni model. Each socket may carry a batch; they are sent in socket order (the first picture of socket 1 is number 1).
image_2opt	IMAGE		Image prompt for the omni model. Each socket may carry a batch; they are sent in socket order (the first picture of socket 1 is number 1).
image_3opt	IMAGE		Image prompt for the omni model. Each socket may carry a batch; they are sent in socket order (the first picture of socket 1 is number 1).
image_4opt	IMAGE		Image prompt for the omni model. Each socket may carry a batch; they are sent in socket order (the first picture of socket 1 is number 1).
image_5opt	IMAGE		Image prompt for the omni model. Each socket may carry a batch; they are sent in socket order (the first picture of socket 1 is number 1).
image_6opt	IMAGE		Image prompt for the omni model. Each socket may carry a batch; they are sent in socket order (the first picture of socket 1 is number 1).
max_cost_usdopt	FLOAT	20.00–100000	Safety cap. If the estimated cost of this run is above this many US dollars the node stops BEFORE sending anything to fal. 0 = no cap.
reuse_identical_runopt	BOOLEAN	true	If these exact inputs (the settings AND the same pictures/clips/audio) were already paid for and the files are still in output/fal, return them instead of paying again - also after a ComfyUI restart. Turn off for a fresh take with the same settings.
extra_jsonopt	STRING		Advanced: a JSON object merged into the request last, for any fal field this node has no box for. Example: {"seed": 7}. Leave empty normally.
max_concurrentopt	INT	11–32	How many paid fal calls may run at the same time in one run, across every fal node. 1 (default) = one after another. This node starts its paid part only while fewer than this many fal calls are running. Once any fal node fails, the ones still waiting are not started, so nothing more is billed.

Outputs (7)

Name	Type	Description
images	IMAGE	—
image_paths	STRING	—
seed	INT	—
has_nsfw_concepts	STRING	—
prompt	STRING	—
timings	STRING	—
info	STRING	JSON: request id, cost estimate, saved files and fal's full answer.