Stability AI · Schema

GenerateSD3Request

3D GenerationArtificial IntelligenceGenerative AIImage-GenerationImage EditingMachine-LearningStable DiffusionText-to-ImageVideo Generation

Properties

Name Type Description
prompt string Text describing what you wish to see in the output image.
negative_prompt string Text describing elements to exclude from the output image.
image string An optional input image for image-to-image generation. When provided, the model uses this image as a reference guided by the strength parameter.
strength number Controls how much influence the input image has on the output. Lower values produce images closer to the input, higher values allow more creative deviation. Only applicable for image-to-image mode.
aspect_ratio string Controls the aspect ratio of the generated image. Only applicable for text-to-image mode.
model string The Stable Diffusion 3 model variant to use for generation.
seed integer A value to control randomness in generation.
output_format string The output format of the generated image.
mode string The generation mode. Use text-to-image for prompt-only generation or image-to-image when providing a reference image.
View JSON Schema on GitHub

JSON Schema

stability-ai-generatesd3request-schema.json Raw ↑
{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "#/components/schemas/GenerateSD3Request",
  "title": "GenerateSD3Request",
  "type": "object",
  "required": [
    "prompt"
  ],
  "properties": {
    "prompt": {
      "type": "string",
      "maxLength": 10000,
      "description": "Text describing what you wish to see in the output image."
    },
    "negative_prompt": {
      "type": "string",
      "maxLength": 10000,
      "description": "Text describing elements to exclude from the output image."
    },
    "image": {
      "type": "string",
      "format": "binary",
      "description": "An optional input image for image-to-image generation. When provided, the model uses this image as a reference guided by the strength parameter."
    },
    "strength": {
      "type": "number",
      "minimum": 0,
      "maximum": 1,
      "default": 0.7,
      "description": "Controls how much influence the input image has on the output. Lower values produce images closer to the input, higher values allow more creative deviation. Only applicable for image-to-image mode."
    },
    "aspect_ratio": {
      "type": "string",
      "enum": [
        "16:9",
        "1:1",
        "21:9",
        "2:3",
        "3:2",
        "4:5",
        "5:4",
        "9:16",
        "9:21"
      ],
      "default": "1:1",
      "description": "Controls the aspect ratio of the generated image. Only applicable for text-to-image mode."
    },
    "model": {
      "type": "string",
      "enum": [
        "sd3",
        "sd3-turbo",
        "sd3.5-large",
        "sd3.5-large-turbo",
        "sd3.5-medium"
      ],
      "default": "sd3.5-large",
      "description": "The Stable Diffusion 3 model variant to use for generation."
    },
    "seed": {
      "type": "integer",
      "minimum": 0,
      "maximum": 4294967294,
      "default": 0,
      "description": "A value to control randomness in generation."
    },
    "output_format": {
      "type": "string",
      "enum": [
        "jpeg",
        "png",
        "webp"
      ],
      "default": "png",
      "description": "The output format of the generated image."
    },
    "mode": {
      "type": "string",
      "enum": [
        "text-to-image",
        "image-to-image"
      ],
      "default": "text-to-image",
      "description": "The generation mode. Use text-to-image for prompt-only generation or image-to-image when providing a reference image."
    }
  }
}

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