images-generate

Generate images with Ideogram 4.5, from a prompt or by transforming source images

Generate one or more images with Ideogram 4.5. Supplying source images turns the request into an image-to-image transform: the model conditions on the sources, the prompt becomes optional guidance, and size may be "auto" to derive the output from the first source. Provide sources either as image_asset_identifiers references or as raw images bytes (multipart requests only); if both are supplied, the references win and the bytes are ignored. The prompt accepts either natural language or a structured Ideogram 4.0 JSON prompt; the server detects which was supplied.

magic_prompt controls automatic prompt rewriting: auto (the default) and on rewrite a natural-language prompt, a prompt that is already a valid structured JSON prompt is always consumed directly, and off disables rewriting entirely so the model receives your prompt verbatim.

Ideogram 4.5 renders a fixed set of output sizes. When size is omitted, the server picks a supported size automatically based on the prompt.

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.

post/v2/image/generate/ideogram-4-5

Query parameters

dry_runboolean

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 body

promptstring

The prompt to generate images from. Accepts either natural language or a structured Ideogram 4.0 JSON prompt; the server detects which was supplied. Required without source images; with sources it is optional guidance and may be empty.

magic_prompt'auto' | 'on' | 'off'

Determine if MagicPrompt should be used in generating the request or not.

imagesstring[]

The source images to transform (max 5, max size 25MB per image), as raw bytes; only JPEG, PNG, and WEBP formats are supported. Multipart requests only; ignored if image_asset_identifiers is also supplied.

sizestring nullable

The output size: "auto" or an exact "WIDTHxHEIGHT".

Without source images, an exact size must be one of the supported 1K/2K presets (for example 1024x1024, 2048x2048 or 1440x2880); "auto" or omitted lets the server pick a supported size based on the prompt.

With source images, "auto" (the default) uses the supported resolution closest to the first source's dimensions, and an exact size must have both dimensions multiples of 32 and at least 256px, the total size at most 2048x2048 pixels, and the aspect ratio at most 6:1.

Pricing is tiered by the resolved output pixels: up to 1024x1024 bills as 1K, above that as 2K.

rendering_speed'turbo' | 'default' | 'quality'

The rendering speed to use.

seedinteger

Random seed. Set for reproducible generation.

num_imagesinteger

The number of images to generate.

enable_copyright_detectionboolean nullable

Optional. Opt this request into post-generation copyright detection. Adds detection latency; flagged images come back with is_image_safe: false.

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

{
  "magic_prompt": "on",
  "image_asset_identifiers": [
    {
      "asset_type": "RESPONSE",
      "asset_id": "7uS_VESkRI6O3-sVgHQp_A"
    }
  ],
  "size": "2048x2048",
  "seed": 12345,
  "webhook_url": "https://api.example.com/webhooks/ideogram"
}

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