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POST
/
nano-banana-2
/
async
curl --request POST \
  --url https://api.modellix.ai/api/v1/google/nano-banana-2/async \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "prompt": "A colorful abstract painting with flowing shapes"
}
'
{
  "code": 0,
  "message": "success",
  "data": {
    "status": "pending",
    "task_id": "task-ghi789",
    "model_id": "google/nano-banana-2",
    "get_result": {
      "method": "GET",
      "url": "https://api.modellix.ai/api/v1/tasks/task-ghi789"
    }
  }
}

Authorizations

​
Authorization
string
header
required

API Key authentication. Format: Bearer YOUR_API_KEY.

Body

application/json
​
prompt
string
required

Image description text

Minimum string length: 1
Example:

"A colorful abstract painting with flowing shapes"

​
image
string

Optional reference image in data URI format (data:image/png;base64,...). When provided, the model performs image-to-image editing guided by the prompt.

Example:

"data:image/png;base64,iVBORw0KGgo..."

​
aspectRatio
enum<string>
default:1:1

Image aspect ratio (14 options supported)

Available options:
1:1,
1:4,
1:8,
2:3,
3:2,
3:4,
4:1,
4:3,
4:5,
5:4,
8:1,
9:16,
16:9,
21:9
Example:

"1:1"

​
imageSize
enum<string>

Output image resolution

Available options:
512,
1K,
2K,
4K
Example:

"1K"

Response

Task submitted successfully

​
code
integer
required

Response code, 0 indicates success

Example:

0

​
message
string
required

Response message

Example:

"success"

​
data
object
required