images-generate

Generate images of a consistent character with Ideogram 3.0

Generate one or more images featuring a consistent character with Ideogram 3.0. Supply the character as a saved character (character_reference_collection_id), as character_reference_asset_identifiers references (an image already stored with Ideogram), or as raw character_reference_images bytes (multipart requests only, with an optional character_reference_mask marking where the character is in the reference). If more than one form is supplied, the collection wins over the identifiers, and the identifiers win over the bytes.

Style references may be combined with the character on accounts with access; otherwise the combination returns a 400. Supply them as a saved style (style_reference_collection_id), as style_reference_asset_identifiers references, or as raw style_reference_images bytes, with the same precedence as the character forms.

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-3-character

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 required

The prompt to generate images from.

negative_promptstring

Description of what to exclude from the images. Descriptions in the prompt take precedence over descriptions in the negative prompt.

character_reference_collection_idstring

A saved character to feature, by its URL-safe base64 collection id. Takes priority over character_reference_asset_identifiers and character_reference_images if more than one is supplied.

character_reference_collection_version_idstring

Optional URL-safe base64 version id pinning a specific version of the character_reference_collection_id collection. Ignored without it.

character_reference_imagesstring[]

An image to use as the character reference (max size 25MB), as raw bytes; only JPEG, PNG, and WEBP formats are supported. Multipart requests only; ignored if a character collection or asset identifier is also supplied.

character_reference_maskstring binary

Optional grayscale mask for the uploaded character reference image, the same size as that image, marking where the character is. Only JPEG, PNG, and WEBP formats are supported. Multipart requests only; applies only with character_reference_images.

seedinteger

Random seed. Set for reproducible generation.

resolution'512x1536' | '576x1408' | '576x1472' | '576x1536' | '640x1344' | '640x1408' | '640x1472' | '640x1536' | '704x1152' | '704x1216' | '704x1280' | '704x1344' | '704x1408' | '704x1472' | '736x1312' | '768x1088' | '768x1216' | '768x1280' | '768x1344' | '800x1280' | '832x960' | '832x1024' | '832x1088' | '832x1152' | '832x1216' | '832x1248' | '864x1152' | '896x960' | '896x1024' | '896x1088' | '896x1120' | '896x1152' | '960x832' | '960x896' | '960x1024' | '960x1088' | '1024x832' | '1024x896' | '1024x960' | '1024x1024' | '1088x768' | '1088x832' | '1088x896' | '1088x960' | '1120x896' | '1152x704' | '1152x832' | '1152x864' | '1152x896' | '1216x704' | '1216x768' | '1216x832' | '1248x832' | '1280x704' | '1280x768' | '1280x800' | '1312x736' | '1344x640' | '1344x704' | '1344x768' | '1408x576' | '1408x640' | '1408x704' | '1472x576' | '1472x640' | '1472x704' | '1536x512' | '1536x576' | '1536x640'

The resolutions supported for Ideogram 3.0.

aspect_ratio'auto' | '1x3' | '3x1' | '1x2' | '2x1' | '9x16' | '16x9' | '10x16' | '16x10' | '2x3' | '3x2' | '3x4' | '4x3' | '4x5' | '5x4' | '1x1'

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_speed'turbo' | 'default' | 'quality'

The rendering speed to use.

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

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

num_imagesinteger

The number of images to generate.

style_type'auto' | 'realistic' | 'fiction'

The style type to generate the character with. Defaults to auto.

style_reference_collection_idstring

A saved style to apply, by its URL-safe base64 collection id. Takes priority over style_reference_asset_identifiers and style_reference_images if more than one is supplied.

style_reference_collection_version_idstring

Optional URL-safe base64 version id pinning a specific version of the style_reference_collection_id collection. Ignored without it.

style_reference_imagesstring[]

Images to use as style references (max 10, max size 25MB per image), as raw bytes; only JPEG, PNG, and WEBP formats are supported. Multipart requests only; ignored if a style reference collection or asset identifiers are also supplied.

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

{
  "character_reference_asset_identifiers": [
    {
      "asset_type": "RESPONSE",
      "asset_id": "7uS_VESkRI6O3-sVgHQp_A"
    }
  ],
  "seed": 12345,
  "resolution": "1280x800",
  "magic_prompt": "on",
  "style_reference_asset_identifiers": [
    {
      "asset_type": "RESPONSE",
      "asset_id": "7uS_VESkRI6O3-sVgHQp_A"
    }
  ],
  "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

Random seed. Set for reproducible generation.

Example response

{
  "data": [
    {
      "seed": 12345,
      "prompt": "prompt",
      "resolution": "1024x1024",
      "url": "https://openapi-generator.tech",
      "is_image_safe": true
    },
    {
      "seed": 12345,
      "prompt": "prompt",
      "resolution": "1024x1024",
      "url": "https://openapi-generator.tech",
      "is_image_safe": true
    }
  ],
  "seed": 12345,
  "generation_id": "generation_id"
}

Changes

Changed in 4 of the 33 revisions of this API.14225

Sep 27, 2026987f73fc82de4See the full diff
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Sep 25, 202652c1c6497d872See the full diff
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  added the new auto enum value to the request property (media type: multipart/form-data)
  request-property-enum-value-added
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  added the new auto enum value to the request property (media type: application/json)
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Sep 19, 20264e95197be44a14218See the full diff
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  added to the request property allOf list (media type: multipart/form-data)
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  the request property default value changed from AUTO to auto (media type: application/json)
  request-property-default-value-changed
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  added the new auto enum value to the request property (media type: multipart/form-data)
  request-property-enum-value-added
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  added the new auto enum value to the request property (media type: application/json)
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  added the new default enum value to the request property (media type: multipart/form-data)
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  added the new default enum value to the request property (media type: application/json)
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  added the new fiction enum value to the request property (media type: multipart/form-data)
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  added the new fiction enum value to the request property (media type: application/json)
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  added the new quality enum value to the request property (media type: multipart/form-data)
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  added the new quality enum value to the request property (media type: application/json)
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  added the new realistic enum value to the request property (media type: multipart/form-data)
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  added the new turbo enum value to the request property (media type: application/json)
  request-property-enum-value-added
This revision also has 13 changes that name no endpoint, such as unreferenced schemas being removed. See the revision's changelog
Sep 17, 20269d3ff2d98e271See the full diff
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Full history