Is flux-pro the same as FLUX1.1 [pro]?
When calling it, use the exact model ID flux-pro; do not rewrite it as FLUX1.1 [pro]. FLUX.1 [pro] and FLUX1.1 [pro] are different versions; when choosing this option, evaluate it based on image quality, prompt adherence, and actual task results rather than assuming 1.1 speed performance.
Can flux-pro edit existing images?
Yes. Use action=edit, and provide image_url, the modification instruction prompt, and size. Edit tasks do not use count to control the quantity. If you want more targeted, context-aware modifications based on an existing image, it is recommended to also compare flux-kontext-pro or flux-kontext-max.
How should size be specified for flux-pro?
You can use 1024x1024, 1024x1792, or 1792x1024, or specify an image aspect ratio. First choose a square, landscape, or portrait format based on the final layout, then describe the subject position and whitespace requirements in the prompt. When using Flux 2 or Kontext, use their corresponding aspect-ratio formats instead.
How can I generate multiple candidate images at once?
In a generate task, specify the number of images with count; one image is generated by default. The returned data list provides links for each image. This is suitable for keeping the main description unchanged, comparing multiple candidates first, and then adjusting the prompt to continue exploring. count does not apply to edit and does not mean every result will be exactly the same.
How can I integrate this into a backend image-production workflow?
Submit the model, operation, prompt, and size to POST /flux/images. You can set async=true, then query the task result after obtaining task_id; you can also use callback_url to receive completion notifications. After completion, read image_url from data, then pass it to asset management, review, or design workflows for processing.