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POST
/
api
/
generate
/
submit
curl --request POST \
  --url https://api.poyo.ai/api/generate/submit \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "model": "nano-banana-2-new",
  "callback_url": "https://your-domain.com/callback",
  "input": {
    "prompt": "A cyberpunk street scene with neon signs and rain",
    "size": "16:9",
    "resolution": "2K"
  }
}
'
{
  "code": 200,
  "data": {
    "task_id": "task-unified-1757165031-uyujaw3d",
    "status": "not_started",
    "created_time": "2025-11-12T10:30:00"
  }
}
  1. After submission, a task_id will be returned. If you provided a callback_url, when the task status becomes finished or failed, a POST request will be sent to the callback_url.
  2. Regardless of whether callback_url is provided, you can retrieve the response result through the unified Query Task Status endpoint.

​
Nano Banana 2 (gemini-3.1-flash-image-preview) Image Generation

Next-generation AI image generation powered by Google’s Gemini 3.1 Flash Image Preview. Delivers native 2K / 4K resolution images with precise multilingual text rendering, chain-of-thought understanding of physical relationships, and support for up to 14 reference images.

​
Available Models

  • nano-banana-2-new - Text-to-image and image-to-image generation
  • nano-banana-2-new-edit - Advanced image editing capabilities

Authorizations

​
Authorization
string
header
required

All API endpoints require Bearer Token authentication

Get your API Key:

Visit the API Key Management Page to get your API Key

Add it to the request header:

Authorization: Bearer YOUR_API_KEY

Body

application/json
​
model
enum<string>
required

Nano Banana 2 (gemini-3.1-flash-image-preview) model identifier

Available options:
nano-banana-2-new,
nano-banana-2-new-edit
​
callback_url
string<uri>

Webhook callback URL for result notifications

Example:

"https://your-domain.com/callback"

​
input
object

Input parameters for generation

Response

Task submitted successfully

​
code
integer
required

HTTP status code

Example:

200

​
data
object
required