ImageGenerationRequest schema

Field	Type and description
`model` Required	string Image generation model identifier.
`prompt` Required	string Text description of the desired image.
`negative_prompt`	string Text description of what to avoid in the image.
`size`	string Image dimensions (e.g., `1024x1024`, `512x512`). `default: "1024x1024"`
`n`	integer Number of images to generate. `default: 1; minimum: 1; maximum: 10`
`width`	integer Image width in pixels (alternative to `size`).
`height`	integer Image height in pixels (alternative to `size`).
`num_inference_steps`	integer Number of diffusion steps.
`guidance_scale`	number Classifier-free guidance scale.
`seed`	integer Random seed for reproducibility.