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Endpoint: POST https://fal.run/fal-ai/flux-pro/v1.1-ultra-finetuned Endpoint ID: fal-ai/flux-pro/v1.1-ultra-finetuned

Try it in the Playground

Run this model interactively with your own prompts.

Quick Start

Capabilities

  • Text prompt input
  • Reproducible generation (seed)
  • Synchronous mode
  • Batch generation
  • Image input
  • Aspect ratio control

API Reference

Input Schema

string
required
The prompt to generate an image from.
integer
The same seed and the same prompt given to the same version of the model will output the same image every time.
boolean
default:"false"
If True, the media will be returned as a data URI and the output data won’t be available in the request history.
integer
default:"1"
The number of images to generate. Default value: 1Range: 1 to 4
OutputFormatEnum
default:"jpeg"
The format of the generated image. Default value: "jpeg"Possible values: jpeg, png
SafetyToleranceEnum
default:"2"
The safety tolerance level for the generated image. 1 being the most strict and 5 being the most permissive. Default value: "2"Possible values: 1, 2, 3, 4, 5, 6
boolean
default:"false"
Whether to enhance the prompt for better results.
string
The image URL to generate an image from.
float
default:"0.1"
The strength of the image prompt, between 0 and 1. Default value: 0.1Range: 0 to 1
Enum | string
default:"16:9"
The aspect ratio of the generated image. Default value: 16:9Possible values: 21:9, 16:9, 4:3, 3:2, 1:1, 2:3, 3:4, 9:16, 9:21
boolean
default:"false"
Generate less processed, more natural-looking images.
string
required
References your specific model
float
required
Controls finetune influence. Increase this value if your target concept isn’t showing up strongly enough. The optimal setting depends on your finetune and promptRange: 0 to 2

Output Schema

list<registry__image__fast_sdxl__models__Image>
required
The generated image files info.
Timings
required
integer
required
Seed of the generated Image. It will be the same value of the one passed in the input or the randomly generated that was used in case none was passed.
list<boolean>
required
Whether the generated images contain NSFW concepts.
string
required
The prompt used for generating the image.

Input Example

Output Example

Limitations

  • num_images range: 1 to 4
  • output_format restricted to: jpeg, png
  • safety_tolerance restricted to: 1, 2, 3, 4, 5, 6
  • image_prompt_strength range: 0 to 1
  • finetune_strength range: 0 to 2