> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://developer.ideogram.ai/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://developer.ideogram.ai/_mcp/server.

# Generate with a custom Ideogram 3.0 model

POST https://api.ideogram.ai/v2/image/generate/ideogram-3-custom-model
Content-Type: multipart/form-data

Generate images with a custom Ideogram 3.0 model that you or your
organization can access, selected by `custom_model_uri`. Returns results
directly by default; set `async` or supply a `webhook_url` to get a
`generation_id` and poll `GET /v2/generations/{generation_id}`.

Reference: https://developer.ideogram.ai/api-reference/images/generate/ideogram-3-custom-model

## Authentication

- `Api-Key` header (required) — API key for access control. Use in the header with the name \"Api-Key\"

## Request

### Query parameters

- `dry_run` (boolean, optional, default: 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.

### Body (multipart/form-data)

This endpoint expects a multipart form with multiple files.

- `prompt` (string, required) — The prompt to generate images from.
- `custom_model_uri` (string, required) — The custom model URI, in the form `model/<model_name>/version/<version_name>`. You or your organization must have access to the model. The model determines which rendering speeds are supported and whether backgrounds are removed automatically.
- `negative_prompt` (string, optional) — Description of what to exclude from the images. The prompt takes precedence over the negative prompt.
- `seed` (integer, optional) — Random seed. Set for reproducible generation.
- `resolution` (enum, optional)
- `aspect_ratio` (enum, optional)
- `rendering_speed` (enum, optional) — The rendering speed to use. When omitted, a speed supported by the custom model is used.
- `magic_prompt` (enum, optional) — Controls magic prompt (automatic prompt rewriting). Defaults to `auto`.
- `num_images` (integer, optional) — The number of images to generate.
- `color_palette` (IdeogramColorPalette, optional)
- `style_codes` (list of string, optional) — A list of 8-character hexadecimal codes representing the style of the image. Refer to each endpoint for supported combinations with style types, presets, and reference images.
- `style_preset` (enum, optional) — A predefined style preset to apply to the generated images. Cannot be combined with style codes or style references.
- `style_reference_images` (files, optional) — Images to use as style references (max 10, max 25MB each; JPEG, PNG, or WEBP). Multipart requests only.
- `enable_copyright_detection` (boolean, optional) — Optional. Run copyright detection on the generated images. Adds latency; flagged images are returned with `is_image_safe: false`.
- `async` (boolean, optional) — 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_url` (string, optional) — 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

### 200

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

- `generation_id` (string, required) — URL-safe base64 ID of the generation. Use it to poll `GET /v2/generations/{generation_id}`.
- `seed` (integer, required) — Random seed. Set for reproducible generation.
- `data` (list of GeneratedImageObject, optional) — The generated images, in generation order. Present only for synchronous requests (`async` omitted or false).

## Errors

### 400 Bad Request Error

Invalid input or an unsupported model option.

- `any`

### 401 Unauthorized Error

Unauthorized.

- `any`

### 402 Payment Required Error

Insufficient credits or quota.

- `error` (string, required) — A message describing why the generation request was rejected.
- `reject_reason` (enum, required) — The account or usage limit that rejected a generation request.
  - Allowed values: `insufficient_funds`, `subscription_required`, `daily_limit`, `priority_credit_required`, `inflight_limit`, `feature_limit`
- `max_inflight_requests` (integer, optional) — How many generations the account may have in progress at once on the queue this request resolved to. Present when `reject_reason` is `inflight_limit`.
- `task_completion_speed` (enum, optional) — The queue this request resolved to. Present when `reject_reason` is `inflight_limit`.
  - Allowed values: `fast`, `slow`

### 403 Forbidden Error

The custom model does not exist or is not accessible to this user or organization.

- `any`

### 404 Not Found Error

A requested resource was not found.

- `any`

### 422 Unprocessable Entity Error

The prompt did not pass safety checks.

- `any`

### 429 Too Many Requests Error

Too many requests.

- `error` (string, required) — A message describing why the generation request was rejected.
- `reject_reason` (enum, required) — The account or usage limit that rejected a generation request.
  - Allowed values: `insufficient_funds`, `subscription_required`, `daily_limit`, `priority_credit_required`, `inflight_limit`, `feature_limit`
- `max_inflight_requests` (integer, optional) — How many generations the account may have in progress at once on the queue this request resolved to. Present when `reject_reason` is `inflight_limit`.
- `task_completion_speed` (enum, optional) — The queue this request resolved to. Present when `reject_reason` is `inflight_limit`.
  - Allowed values: `fast`, `slow`

### 500 Internal Server Error

Internal server error.

- `any`

### 503 Service Unavailable Error

The endpoint is temporarily unavailable.

- `any`

## Types

### GeneratedImageObject

One generated output image.

- `prompt` (string, required) — The final prompt the image was generated from.
- `resolution` (string, required) — The resolution of the generated image, formatted as "WIDTHxHEIGHT".
- `is_image_safe` (boolean, required) — Whether the image passed safety checks. If false, `url` is empty.
- `seed` (integer, required) — Random seed. Set for reproducible generation.
- `url` (string, optional, nullable) — The direct link to the generated image. Empty when the image did not pass safety checks.

## Examples

**Request**

```json
{
  "custom_model_uri": "model/my-custom-model/version/1",
  "prompt": "string",
  "style_reference_images": []
}
```

**Response**

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

**SDK Code**

```python
import requests

url = "https://api.ideogram.ai/v2/image/generate/ideogram-3-custom-model"

payload = "-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"aspect_ratio\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"async\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"color_palette\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"custom_model_uri\"\r\n\r\nmodel/my-custom-model/version/1\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"enable_copyright_detection\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"magic_prompt\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"negative_prompt\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"num_images\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"prompt\"\r\n\r\nstring\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"rendering_speed\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"resolution\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"seed\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"style_codes\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"style_preset\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"webhook_url\"\r\n\r\n\r\n-----011000010111000001101001--\r\n"
headers = {
    "Api-Key": "<apiKey>",
    "Content-Type": "multipart/form-data; boundary=---011000010111000001101001"
}

response = requests.post(url, data=payload, headers=headers)

print(response.json())
```

```javascript
const url = 'https://api.ideogram.ai/v2/image/generate/ideogram-3-custom-model';
const form = new FormData();
form.append('aspect_ratio', '');
form.append('async', '');
form.append('color_palette', '');
form.append('custom_model_uri', 'model/my-custom-model/version/1');
form.append('enable_copyright_detection', '');
form.append('magic_prompt', '');
form.append('negative_prompt', '');
form.append('num_images', '');
form.append('prompt', 'string');
form.append('rendering_speed', '');
form.append('resolution', '');
form.append('seed', '');
form.append('style_codes', '');
form.append('style_preset', '');
form.append('webhook_url', '');

const options = {method: 'POST', headers: {'Api-Key': '<apiKey>'}};

options.body = form;

try {
  const response = await fetch(url, options);
  const data = await response.json();
  console.log(data);
} catch (error) {
  console.error(error);
}
```

```go
package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://api.ideogram.ai/v2/image/generate/ideogram-3-custom-model"

	payload := strings.NewReader("-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"aspect_ratio\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"async\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"color_palette\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"custom_model_uri\"\r\n\r\nmodel/my-custom-model/version/1\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"enable_copyright_detection\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"magic_prompt\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"negative_prompt\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"num_images\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"prompt\"\r\n\r\nstring\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"rendering_speed\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"resolution\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"seed\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"style_codes\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"style_preset\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"webhook_url\"\r\n\r\n\r\n-----011000010111000001101001--\r\n")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("Api-Key", "<apiKey>")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(res)
	fmt.Println(string(body))

}
```

```ruby
require 'uri'
require 'net/http'

url = URI("https://api.ideogram.ai/v2/image/generate/ideogram-3-custom-model")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Post.new(url)
request["Api-Key"] = '<apiKey>'
request.body = "-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"aspect_ratio\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"async\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"color_palette\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"custom_model_uri\"\r\n\r\nmodel/my-custom-model/version/1\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"enable_copyright_detection\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"magic_prompt\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"negative_prompt\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"num_images\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"prompt\"\r\n\r\nstring\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"rendering_speed\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"resolution\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"seed\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"style_codes\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"style_preset\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"webhook_url\"\r\n\r\n\r\n-----011000010111000001101001--\r\n"

response = http.request(request)
puts response.read_body
```

```java
import com.mashape.unirest.http.HttpResponse;
import com.mashape.unirest.http.Unirest;

HttpResponse<String> response = Unirest.post("https://api.ideogram.ai/v2/image/generate/ideogram-3-custom-model")
  .header("Api-Key", "<apiKey>")
  .body("-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"aspect_ratio\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"async\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"color_palette\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"custom_model_uri\"\r\n\r\nmodel/my-custom-model/version/1\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"enable_copyright_detection\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"magic_prompt\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"negative_prompt\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"num_images\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"prompt\"\r\n\r\nstring\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"rendering_speed\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"resolution\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"seed\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"style_codes\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"style_preset\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"webhook_url\"\r\n\r\n\r\n-----011000010111000001101001--\r\n")
  .asString();
```

```php
<?php
require_once('vendor/autoload.php');

$client = new \GuzzleHttp\Client();

$response = $client->request('POST', 'https://api.ideogram.ai/v2/image/generate/ideogram-3-custom-model', [
  'multipart' => [
    [
        'name' => 'custom_model_uri',
        'contents' => 'model/my-custom-model/version/1'
    ],
    [
        'name' => 'prompt',
        'contents' => 'string'
    ]
  ]
  'headers' => [
    'Api-Key' => '<apiKey>',
  ],
]);

echo $response->getBody();
```

```csharp
using RestSharp;

var client = new RestClient("https://api.ideogram.ai/v2/image/generate/ideogram-3-custom-model");
var request = new RestRequest(Method.POST);
request.AddHeader("Api-Key", "<apiKey>");
request.AddParameter("undefined", "-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"aspect_ratio\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"async\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"color_palette\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"custom_model_uri\"\r\n\r\nmodel/my-custom-model/version/1\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"enable_copyright_detection\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"magic_prompt\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"negative_prompt\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"num_images\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"prompt\"\r\n\r\nstring\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"rendering_speed\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"resolution\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"seed\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"style_codes\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"style_preset\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"webhook_url\"\r\n\r\n\r\n-----011000010111000001101001--\r\n", ParameterType.RequestBody);
IRestResponse response = client.Execute(request);
```

```swift
import Foundation

let headers = ["Api-Key": "<apiKey>"]
let parameters = [
  [
    "name": "aspect_ratio",
    "value": 
  ],
  [
    "name": "async",
    "value": 
  ],
  [
    "name": "color_palette",
    "value": 
  ],
  [
    "name": "custom_model_uri",
    "value": "model/my-custom-model/version/1"
  ],
  [
    "name": "enable_copyright_detection",
    "value": 
  ],
  [
    "name": "magic_prompt",
    "value": 
  ],
  [
    "name": "negative_prompt",
    "value": 
  ],
  [
    "name": "num_images",
    "value": 
  ],
  [
    "name": "prompt",
    "value": "string"
  ],
  [
    "name": "rendering_speed",
    "value": 
  ],
  [
    "name": "resolution",
    "value": 
  ],
  [
    "name": "seed",
    "value": 
  ],
  [
    "name": "style_codes",
    "value": 
  ],
  [
    "name": "style_preset",
    "value": 
  ],
  [
    "name": "webhook_url",
    "value": 
  ]
]

let boundary = "---011000010111000001101001"

var body = ""
var error: NSError? = nil
for param in parameters {
  let paramName = param["name"]!
  body += "--\(boundary)\r\n"
  body += "Content-Disposition:form-data; name=\"\(paramName)\""
  if let filename = param["fileName"] {
    let contentType = param["content-type"]!
    let fileContent = String(contentsOfFile: filename, encoding: String.Encoding.utf8)
    if (error != nil) {
      print(error as Any)
    }
    body += "; filename=\"\(filename)\"\r\n"
    body += "Content-Type: \(contentType)\r\n\r\n"
    body += fileContent
  } else if let paramValue = param["value"] {
    body += "\r\n\r\n\(paramValue)"
  }
}

let request = NSMutableURLRequest(url: NSURL(string: "https://api.ideogram.ai/v2/image/generate/ideogram-3-custom-model")! as URL,
                                        cachePolicy: .useProtocolCachePolicy,
                                    timeoutInterval: 10.0)
request.httpMethod = "POST"
request.allHTTPHeaderFields = headers
request.httpBody = postData as Data

let session = URLSession.shared
let dataTask = session.dataTask(with: request as URLRequest, completionHandler: { (data, response, error) -> Void in
  if (error != nil) {
    print(error as Any)
  } else {
    let httpResponse = response as? HTTPURLResponse
    print(httpResponse)
  }
})

dataTask.resume()
```