ComfyUI Node
arkennemasis fal · Flux Vision Upscaler · $0.10/MP of output
Flux Vision Upscaler for magnify/upscaling images with high fidelity and creativity. Pricing (from fal, 2026-09-30): $0.1 per megapixel (fal's billing unit). Model page: https://fal.ai/models/fal-ai/flux-vision-upscaler Key: FAL_KEY in the .env next to run_nvidia_gpu.bat. Results are saved in output/fal/fal-ai_flux-vision-upscaler/.
arkennemasis fal · Flux Vision Upscaler · $0.10/MP of output
- image
- images
- image_paths
- seed
- caption
- timings
- info
◄upscale_factor2.00►
◄seed-1►
◄creativity0.30►
◄guidance1.00►
◄steps20►
◄enable_safety_checkertrue►
◄max_cost_usd20.0►
◄reuse_identical_runtrue►
◄extra_json►
◄max_concurrent1►
Categoryarkennemasis/fal/Image/Flux
Inputs (11)
| Name | Type | Default | Description |
|---|---|---|---|
| image | IMAGE | The URL of the image to upscale. | |
| upscale_factor | FLOAT | 2.001–4 | The upscale factor (1-4x). |
| seed | INT | -1-1–2147483647 | The seed to use for the upscale. If not provided, a random seed will be used. -1 leaves it to the model. |
| creativity | FLOAT | 0.300–1 | The creativity of the model. The higher the creativity, the more the model will deviate from the original. Refers to the denoise strength of the sampling. |
| guidance | FLOAT | 1.001–4 | CFG/guidance scale (1-4). Controls how closely the model follows the prompt. |
| steps | INT | 204–50 | Number of inference steps (4-50). |
| enable_safety_checker | BOOLEAN | true | Whether to enable the safety checker. |
| 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 (6)
| Name | Type | Description |
|---|---|---|
| images | IMAGE | — |
| image_paths | STRING | — |
| seed | INT | — |
| caption | STRING | — |
| timings | STRING | — |
| info | STRING | JSON: request id, cost estimate, saved files and fal's full answer. |