GPT Image 2.5 Sunburst - Ekly API

Detailed image generation and precise reference-image editing.


Model id	`gpt-image-2.5-sunburst`
Media	image
Submit to	`POST /v1/images`
Price	2.9 credits per_generation before discounts

Request

Required: prompt
Optional: generate_image_count, gpt_image_preset, gpt_image_size, image_background, mask_image, moderation, output_format, image_quality, reference_images

{
  "model": "gpt-image-2.5-sunburst",
  "prompt": "A blue ceramic cup, three-quarter view, soft studio light, preserve the handle silhouette, transparent background. No text.",
  "generate_image_count": 1,
  "gpt_image_preset": "1:1",
  "gpt_image_size": "1024x1024",
  "image_background": "opaque",
  "moderation": "auto",
  "output_format": "png",
  "image_quality": "high"
}

Field	Allowed	Default
`generate_image_count`	1.0 – 4.0	`1`
`gpt_image_preset`	`1:1`, `3:2`, `2:3`, `16:9`, `9:16`, `4:3`, `3:4`, `21:9`	`"1:1"`
`gpt_image_size`	`1536x864`, `2048x1152`, `3840x2160`	`"1024x1024"`
`image_background`	`opaque`, `transparent`, `auto`	`"opaque"`
`mask_image`	asset id (up to 1)
`moderation`	`auto`	`"auto"`
`output_format`	`png`, `webp`, `jpeg`	`"png"`
`image_quality`	`high`, `medium`, `low`, `xhigh`, `max`	`"high"`
`reference_images`	asset ids (up to 5)

Reference inputs take asset ids from POST /v1/uploads or an earlier output’s asset_id. Prices and allowed values come from the live catalog; GET /v1/models/gpt-image-2.5-sunburst is always current.