Flux 2 Flex: Precision Image-to-Image Generation & Control

curl --request POST \
  --url https://model-api.runcomfy.net/v1/models/blackforestlabs/flux-2/flex/edit \
  --header "Content-Type: application/json" \
  --header "Authorization: Bearer <token>" \
  --data '{
    "prompt": "Change colors of flowers flowing from rich #6a0dad to soft #ff69b4. Add an artistic carving text with a big font on helmet that says 'FLEX'.",
    "image_urls": [
      "https://playgrounds-storage-public.runcomfy.net/tools/7228/media-files/input-1-1.png"
    ]
  }'

curl --request GET \
  --url https://model-api.runcomfy.net/v1/requests/{request_id}/status \
  --header "Authorization: Bearer <token>"

curl --request GET \
  --url https://model-api.runcomfy.net/v1/requests/{request_id}/result \
  --header "Authorization: Bearer <token>"

curl --request POST \
  --url https://model-api.runcomfy.net/v1/requests/{request_id}/cancel \
  --header "Authorization: Bearer <token>"

{
  "type": "object",
  "title": "modelApiDoc_navInputSchema",
  "required": [
    "prompt",
    "image_urls"
  ],
  "properties": {
    "prompt": {
      "title": "Prompt",
      "description": "The prompt to generate an image from.",
      "type": "string",
      "default": "Change colors of flowers flowing from rich #6a0dad to soft #ff69b4. Add an artistic carving text with a big font on helmet that says 'FLEX'."
    },
    "image_size": {
      "title": "Image Size",
      "description": "The size of the generated image. If auto, the size will be determined by the model. For custom image sizes, width and height can be passed as an object.",
      "type": "string",
      "enum": [
        "auto",
        "square_hd",
        "square",
        "portrait_4_3",
        "portrait_16_9",
        "landscape_4_3",
        "landscape_16_9"
      ],
      "default": "auto"
    },
    "enable_prompt_expansion": {
      "title": "Magic Prompt",
      "description": "Whether to expand the prompt using the model's own knowledge.",
      "type": "boolean",
      "default": true
    },
    "seed": {
      "title": "Seed",
      "description": "The seed to use for the generation.",
      "type": "integer",
      "default": 0
    },
    "output_format": {
      "title": "Output Format",
      "description": "The format of the generated image.",
      "type": "string",
      "enum": [
        "jpeg",
        "png"
      ],
      "default": "jpeg"
    },
    "image_urls": {
      "title": "Image URLs",
      "description": "List of URLs of input images for editing.",
      "type": "array",
      "items": {
        "type": "string",
        "format": "image_uri"
      },
      "maxItems": 10,
      "minItems": 1,
      "default": [
        "https://playgrounds-storage-public.runcomfy.net/tools/7228/media-files/input-1-1.png"
      ]
    },
    "guidance_scale": {
      "title": "Guidance Scale",
      "description": "The guidance scale to use for the generation.",
      "type": "float",
      "default": 3.5,
      "minimum": 1.5,
      "maximum": 10
    },
    "num_inference_steps": {
      "title": "Number of Inference Steps",
      "description": "The number of inference steps to perform.",
      "type": "integer",
      "default": 28,
      "minimum": 2,
      "maximum": 50
    }
  }
}