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ImagesGenerate

Generate transparent images with Ideogram 3.0

Generate images on a transparent background with Ideogram 3.0, delivered as PNGs with alpha. Returns results directly by default; set async or supply a webhook_url to get a generation_id and poll GET /v2/generations/{generation_id}.

Authentication

Api-Keystring

API key for access control. Use in the header with the name "Api-Key"

Query parameters

dry_runbooleanOptionalDefaults to false

When true, the request is validated and priced but not run: nothing is generated, stored, or billed, and no safety review is performed. The response is a PriceQuote object instead of the usual response for this endpoint. Send exactly the request you would send to generate, so the quote reflects the same options.

Request

A request to generate transparent-background images with Ideogram 3.0.

promptstringRequired1-10000 characters
The prompt to generate images from.
negative_promptstringOptional<=10000 characters
Description of what to exclude from the images. The prompt takes precedence over the negative prompt.
seedintegerOptional0-2147483647
Random seed. Set for reproducible generation.
upscale_factorenumOptionalDefaults to x1

Optional enhancement factor applied after generation. x1 (the default) delivers the base render.

Allowed values:
aspect_ratioenumOptional

The aspect ratio for an Ideogram 3.x or 2.x generation. auto lets the model select a ratio from the prompt; any other value pins the ratio. Cannot be combined with resolution. Omitting the field is not auto: it uses 1x1.

rendering_speedenumOptionalDefaults to default
The rendering speed to use.
Allowed values:
magic_promptenumOptionalDefaults to auto

Controls magic prompt (automatic prompt rewriting). Defaults to auto.

Allowed values:
num_imagesintegerOptional1-8Defaults to 1
The number of images to generate.
asyncbooleanOptionalDefaults to false

When false (the default), the request waits until the images are ready and returns them in data. When true, the request returns as soon as it is accepted; poll GET /v2/generations/{generation_id} with the returned generation_id for the result.

webhook_urlstringOptionalformat: "uri"<=2048 characters

HTTPS URL that Ideogram delivers the generated result to. Ideogram sends a JSON POST to this URL once all images for the request have finished generating. The body mirrors the synchronous generate response: request_id, created, and a data array containing every generated image (url, prompt, resolution, seed, is_image_safe). Each delivery is signed with Ed25519 and verifiable against the public keys at https://api.ideogram.ai/v1/.well-known/jwks.json. Must be HTTPS; private and loopback hosts and the cloud metadata service are rejected.

Response

The generated images (synchronous requests), or an acknowledgement to poll with GET /v2/generations/{generation_id} (async requests).

generation_idstring

URL-safe base64 ID of the generation. Use it to poll GET /v2/generations/{generation_id}.

seedinteger0-2147483647
Random seed. Set for reproducible generation.
datalist of objectsOptional

The generated images, in generation order. Present only for synchronous requests (async omitted or false).

Errors

400
Bad Request Error
401
Unauthorized Error
402
Payment Required Error
422
Unprocessable Entity Error
429
Too Many Requests Error
500
Internal Server Error
503
Service Unavailable Error