SD 3 Medium (Edit)

{
  "model_id": "fal-ai/stable-diffusion-v3-medium/image-to-image",
  "prompt": "Transform this medieval castle into an enchanted fantasy stronghold — glowing magical runes carved into the stone walls, ethereal blue and violet aurora lights swirling around the towers, a mystical fire burning at the highest turret, crystalline dragon perched on a battlement, enchanted forest with luminous trees replacing the surrounding landscape, ultra-detailed, cinematic fantasy realism",
  "reference_image_urls": []
}

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://www.artemotion.ai/api/v1/models?id=fal-ai%2Fstable-diffusion-v3-medium%2Fimage-to-image",
  "title": "SD 3 Medium (Edit) generation request",
  "description": "Request body accepted by POST /api/v1/generate for fal-ai/stable-diffusion-v3-medium/image-to-image.",
  "type": "object",
  "properties": {
    "model_id": {
      "type": "string",
      "const": "fal-ai/stable-diffusion-v3-medium/image-to-image",
      "description": "ArtEmotion model identifier."
    },
    "extra": {
      "type": "object",
      "additionalProperties": true,
      "description": "Model-specific settings may also be nested here."
    },
    "max_credits": {
      "type": "number",
      "minimum": 1,
      "description": "Reject before submission if the estimated list price exceeds this cap."
    },
    "webhook_url": {
      "type": "string",
      "format": "uri",
      "maxLength": 2048
    },
    "webhook_secret": {
      "type": "string",
      "maxLength": 512
    },
    "folder_id": {
      "type": "string"
    },
    "prompt": {
      "type": "string"
    },
    "prompt_expansion": {
      "title": "Prompt Expansion",
      "description": "If set to true, prompt will be upsampled with more details.",
      "default": false,
      "type": "boolean"
    },
    "num_inference_steps": {
      "title": "Num Inference Steps",
      "description": "The number of inference steps to perform.",
      "default": 28,
      "type": "number",
      "minimum": 1,
      "maximum": 50,
      "multipleOf": 1
    },
    "strength": {
      "title": "Strength",
      "description": "The strength of the image-to-image transformation.",
      "default": 0.9,
      "type": "number",
      "minimum": 0.01,
      "maximum": 1
    },
    "seed": {
      "title": "Seed",
      "description": "The same seed and the same prompt given to the same version of Stable Diffusion will output the same image every time.",
      "type": "integer"
    },
    "negative_prompt": {
      "title": "Negative Prompt",
      "description": "The negative prompt to generate an image from.",
      "default": "",
      "type": "string"
    },
    "guidance_scale": {
      "title": "Guidance Scale",
      "description": "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",
      "default": 5,
      "type": "number",
      "minimum": 0,
      "maximum": 20
    },
    "enable_safety_checker": {
      "title": "Enable Safety Checker",
      "description": "If set to true, the safety checker will be enabled.",
      "default": true,
      "type": "boolean"
    },
    "aspect_ratio": {
      "type": "string",
      "enum": [
        "1:1",
        "16:9",
        "9:16",
        "4:3",
        "3:4",
        "Custom"
      ]
    },
    "resolution": {
      "type": "string",
      "enum": [
        "512",
        "1024",
        "2048"
      ]
    },
    "num_images": {
      "type": "integer",
      "minimum": 1,
      "maximum": 4
    },
    "reference_image_urls": {
      "type": "array",
      "items": {
        "type": "string",
        "format": "uri"
      },
      "maxItems": 4
    }
  },
  "required": [
    "model_id",
    "prompt",
    "reference_image_urls"
  ],
  "additionalProperties": false
}