Generate images with Gemini 3.0 Pro from a text prompt

Generate one or more images with Gemini 3.0 Pro. The prompt is consumed by the model directly, without rewriting.

The output is served at the closest aspect ratio the model supports, at the requested resolution_tier (1K by default).

By default the request blocks until the images are ready and returns them in data. Set async to true to return immediately after the request is accepted, then poll for completion and results with GET /v1/generations/{generation_id} using the returned generation_id.

Supplying a webhook_url makes the request asynchronous whatever async says: the response returns as soon as the request is accepted, and the finished result is POSTed to that URL.

Request body

promptstring required

The prompt to generate images from. The model consumes it directly, without rewriting.

aspect_ratiostring

The requested output aspect ratio, for example "1:1", "16:9", or "9:16". The output is served at the closest aspect ratio the model supports, at the requested resolution tier. Defaults to "1:1".

resolution_tier'1K' | '2K' | '4K'

The output resolution tier.

num_imagesinteger

The number of images to generate.

seedinteger

Random seed. Set for reproducible generation.

asyncboolean

When false (the default), the request blocks until the images are ready and returns them in data. When true, the request returns as soon as it is accepted; poll for completion and results with GET /v1/generations/{generation_id} using the returned generation_id.

webhook_urlstring uri

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.

privateboolean nullable

When true or omitted, the output is kept private to your account. Set to false to publish the output to the public feed. Enterprise accounts always generate privately.

target_collection_idstring

A collection you can write to, by its URL-safe base64 collection id. The output images are added to it when the request completes.

Example request

{
  "aspect_ratio": "aspect_ratio",
  "async": false,
  "private": true,
  "seed": 12345,
  "webhook_url": "https://api.example.com/webhooks/ideogram",
  "target_collection_id": "target_collection_id",
  "resolution_tier": "1K",
  "prompt": "prompt",
  "num_images": 1
}

Response

The generated images (synchronous requests), or an acknowledgement to poll with GET /v1/generations/{generation_id} (async requests).

generation_idstring required

URL-safe base64 ID of the accepted generation. Accepted by the GET /v1/generations/{generation_id} polling endpoint.

seedinteger required