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Nano Banana 2.1

Integrate

Model id google/nano-banana-2.1
# Run the model; wait up to 20 s for the finished result in the same call
curl -X POST "https://vit.doitong.com/api/v1/run/google/nano-banana-2.1?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://vit.doitong.com/api/v1/requests/REQUEST_ID?wait=20" \
  -H "Authorization: Bearer $DOITONG_API_KEY"

This request: ≈$0.082 82 API credits Run it on this page

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Google Text to Image 4K outputup to 4K #image-generation#photorealism#typography#text-rendering

Text-to-image with 1K/2K/4K output, extreme aspect ratios, web search and thinking levels

Google · 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 88 / 50000

Text instructions used to generate an image.

resolution default 1K

Resolution for the output image.

default auto

Choose the generated image's aspect ratio explicitly, including extreme options 4:1, 1:4, 8:1, 1:8, or select "auto" for a prompt-based choice by the model.

num_images default 1

Image count requested for generation.

Advanced system_prompt · output_format · safety_tolerance · thinking_level · seed · limit_generations · enable_web_search
0 / 50000

Optional request-wide persona and output-style guidance, delivered to Gemini as a system instruction or to OpenAI-compatible providers as a system message. Nothing is sent for this instruction when the value is blank.

output_format default png

File format for the resulting image.

safety_tolerance default 4

Set content-moderation tolerance between the least restrictive level, 6, and the strictest level, 1, which blocks most content.

thinking_level default medium

Pre-generation reasoning level, trading increased thinking-token use at higher settings for potentially better complex compositions.

Seed value that initializes random-number generation.

POST /run/google/nano-banana-2.1?wait=20 quote → $0.082
# Run the model; wait up to 20 s for the finished result in the same call
curl -X POST "https://vit.doitong.com/api/v1/run/google/nano-banana-2.1?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://vit.doitong.com/api/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 Nano Banana 2.1

Generates images from a `prompt` up to 50000 characters. `resolution` is 1K, 2K or 4K, and `aspect_ratio` includes auto plus extremes like 8:1 and 1:8. It adds `enable_web_search`, a `system_prompt`, and `thinking_level` of minimal, medium or high. Up to 4 images per request.

Parameters

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

NameType DefaultAllowed Description
promptrequired
Typestring
≤ 50,000 characters≥ 3 characters
Text instructions used to generate an image.
num_imagesoptional num_outputs
Typeinteger
Default1
1 – 4
Image count requested for generation.
seedoptional
Typeinteger | null
Seed value that initializes random-number generation.
aspect_ratiooptional
Typeenum
Defaultauto
auto21:916:93:24:35:41:14:53:42:39:164:11:48:11:8
Choose the generated image's aspect ratio explicitly, including extreme options 4:1, 1:4, 8:1, 1:8, or select "auto" for a prompt-based choice by the model.
output_formatoptional
Typeenum
Defaultpng
jpegpngwebp
File format for the resulting image.
safety_toleranceoptional
Typeenum
Default4
123456
Set content-moderation tolerance between the least restrictive level, 6, and the strictest level, 1, which blocks most content.
system_promptoptional
Typestring
Default
≤ 50,000 characters
Optional request-wide persona and output-style guidance, delivered to Gemini as a system instruction or to OpenAI-compatible providers as a system message. Nothing is sent for this instruction when the value is blank.
resolutionoptional
Typeenum
Default1K
1K2K4K
Resolution for the output image.
limit_generationsoptional
Typeboolean
Defaulttrue
Experimental generation cap that may affect quality when enabled. With `True`, each prompting round is restricted to 1 generation, overriding image-count instructions in the prompt and ignoring model-generated intermediate images.
thinking_leveloptional
Typeenum
Defaultmedium
minimalmediumhigh
Pre-generation reasoning level, trading increased thinking-token use at higher settings for potentially better complex compositions.
required Canonical name, also accepted

Output

GET /requests/req_8k2m4q7x1z9c3v5b6n0p2r4t
{
  "id": "req_8k2m4q7x1z9c3v5b6n0p2r4t",
  "object": "request",
  "model": "google/nano-banana-2.1",
  "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": 82,
    "usd": "0.082",
    "charged": 82,
    "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",
        "content_type": "image/jpeg",
        "file_name": "0-output.jpeg",
        "file_size": 1843200,
        "width": 1024,
        "height": 768
      }
    ],
    "description": "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://vit.doitong.com/api/v1/requests/req_8k2m4q7x1z9c3v5b6n0p2r4t",
    "cancel": "https://vit.doitong.com/api/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, content_type, file_name, file_size, width, height}Images produced by the model.
description
stringDescription accompanying the generated images.

For AI agents: this page as Markdown is at https://doitong.com/developers/models/google/nano-banana-2.1.md. All models and guides: https://doitong.com/developers/llms.txt