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Nucleus Image

Integrate

Model id nucleus-image
# Run the model; wait up to 20 s for the finished result in the same call
curl -X POST "https://api.doitong.com/v1/run/nucleus-image?wait=20" \
  -H "Authorization: Bearer $DOITONG_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "prompt": "A red fox trots through fresh snow at sunrise, soft golden light, shallow depth of field"
  }'

# Still "queued" or "running"? Poll with the id from the response:
curl "https://api.doitong.com/v1/requests/REQUEST_ID?wait=20" \
  -H "Authorization: Bearer $DOITONG_API_KEY"

This request: ≈$0.01 10 API credits Run it on this page

Get API key
Open model Text to Image #stylized#transform#typography

Text-to-image model with a sparse mixture-of-experts diffusion design and 7 aspect ratio presets

Open model · Image

Your first result goes here

Build a request below and run it with your API key. Outputs are copied to our storage, kept forever or 7 days for free.

Build a request

Controls are generated from the model schema. The code and the price update as you change them.

•required

Prompt that guides image generation.

aspect_ratio default 1:1

Aspect ratio for the generated image, selected from Nucleus-Image's fixed collection of presets.

num_images default 1

Image count requested for generation.

Advanced negative_prompt · output_format · num_inference_steps · guidance_scale · seed · enable_safety_checker
default

Negative prompt applied during generation.

output_format default png

File format for the resulting image.

default 50

Count of inference steps to run.

default 8

Scale applied to classifier-free guidance.

Seed value that makes generation reproducible.

POST /run/nucleus-image?wait=20 quote → $0.01
# Run the model; wait up to 20 s for the finished result in the same call
curl -X POST "https://api.doitong.com/v1/run/nucleus-image?wait=20" \
  -H "Authorization: Bearer $DOITONG_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "prompt": "A red fox trots through fresh snow at sunrise, soft golden light, shallow depth of field"
  }'

# Still "queued" or "running"? Poll with the id from the response:
curl "https://api.doitong.com/v1/requests/REQUEST_ID?wait=20" \
  -H "Authorization: Bearer $DOITONG_API_KEY"

Run this request

Your key stays in this browser: it is sent only to the Doitong API and saved (localStorage) only if you tick Remember. Get an API key

About Nucleus Image

Generates images from a text `prompt`, with a `negative_prompt` available. Aspect ratio is chosen from seven presets between 1:1, 16:9, 9:16, 4:3, 3:4, 3:2 and 2:3. You control `num_inference_steps` (1 to 100), `guidance_scale` (0 to 20) and `seed`, and can request up to 2 images in png or jpeg.

Parameters

Send either the canonical name or the native name, not both. Canonical names

NameType DefaultAllowed Description
promptrequired
Typestring
Prompt that guides image generation.
negative_promptoptional
Typestring
Default
Negative prompt applied during generation.
aspect_ratiooptional
Typeenum
Default1:1
1:116:99:164:33:43:22:3
Aspect ratio for the generated image, selected from Nucleus-Image's fixed collection of presets.
num_inference_stepsoptional
Typeinteger
Default50
1 – 100
Count of inference steps to run.
guidance_scaleoptional
Typenumber
Default8
0 – 20
Scale applied to classifier-free guidance.
seedoptional
Typeinteger | null
Seed value that makes generation reproducible.
num_imagesoptional num_outputs
Typeinteger
Default1
1 – 2
Image count requested for generation.
enable_safety_checkeroptional
Typeboolean
Defaulttrue
Safety checking, which returns black images in place of any images flagged unsafe. A value of true enables checking; false disables it only for authorized accounts, while requests without authorization are checked regardless.
output_formatoptional
Typeenum
Defaultpng
jpegpng
File format for the resulting image.
required Canonical name, also accepted

Output

GET /requests/req_8k2m4q7x1z9c3v5b6n0p2r4t
{
  "id": "req_8k2m4q7x1z9c3v5b6n0p2r4t",
  "object": "request",
  "model": "nucleus-image",
  "status": "succeeded",
  "created_at": "2026-10-20T12:00:00Z",
  "started_at": "2026-10-20T12:00:02Z",
  "completed_at": "2026-10-20T12:00:09Z",
  "queue_position": null,
  "cost": {
    "credits": 10,
    "usd": "0.01",
    "charged": 10,
    "refunded": 0
  },
  "input": {
    "prompt": "A red fox trots through fresh snow at sunrise, soft golden light, shallow depth of field"
  },
  "output": {
    "images": [
      {
        "url": "https://content.doitong.com/dev-api/2026/10/20/req_8k2m4q7x1z9c3v5b6n0p2r4t/0-output.jpeg",
        "width": 1024,
        "height": 768,
        "content_type": "image/jpeg"
      }
    ],
    "timings": {},
    "seed": 42,
    "has_nsfw_concepts": [
      false
    ],
    "prompt": "string"
  },
  "outputs": [
    {
      "type": "image",
      "url": "https://content.doitong.com/dev-api/2026/10/20/req_8k2m4q7x1z9c3v5b6n0p2r4t/0-output.jpeg",
      "content_type": "image/jpeg",
      "file_size": 1843200,
      "width": 1024,
      "height": 768,
      "stored": true
    }
  ],
  "error": null,
  "metrics": {
    "inference_seconds": 6.8
  },
  "urls": {
    "self": "https://api.doitong.com/v1/requests/req_8k2m4q7x1z9c3v5b6n0p2r4t",
    "cancel": "https://api.doitong.com/v1/requests/req_8k2m4q7x1z9c3v5b6n0p2r4t/cancel"
  }
}
Your files, your choiceEvery outputs[].url is a copy on our storage: kept forever (paid per GB-month) or 7 days for free, by your account setting or ?storage=.
Same shape on every modeltype, url, content_type, width, height and duration, for images, video and audio alike. output is the model’s own result object.
Fields of output
images
array of object {url, width, height, content_type}File information for the generated images.
timings
object
seed
integerImage-generation seed, including the randomly chosen value if the input omitted a seed; otherwise, it repeats the supplied value.
has_nsfw_concepts
array of booleanIndicates whether NSFW concepts appear in the generated images.
prompt
stringPrompt used during image generation.

For AI agents: this page as Markdown is at https://doitong.com/en-US/developers/models/nucleus-image.md. All models and guides: https://doitong.com/developers/llms.txt