nanobanana - EggAPI

nanobanana is the API model ID for the public nano-banana catalog model. It supports asynchronous image generation and image editing through the same POST /v1/generate endpoint.

Field	Value
Public catalog name	`nano-banana`
API model ID	`nanobanana`
Processing	Async task
Generate task type	`image_generate`
Edit task type	`image_edit`
Base cost	`$0.0100` per output image

Generate an Image

curl -X POST https://api.eggapi.ai/v1/generate \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "nanobanana",
    "prompt": "A clean editorial photo of a lemon tart on a steel table",
    "aspect_ratio": "16:9",
    "num_outputs": 1
  }'

import requests

response = requests.post(
    "https://api.eggapi.ai/v1/generate",
    headers={"Authorization": "Bearer YOUR_API_KEY"},
    json={
        "model": "nanobanana",
        "prompt": "A clean editorial photo of a lemon tart on a steel table",
        "aspect_ratio": "16:9",
        "num_outputs": 1,
    },
)

task = response.json()["data"]
print(task["id"])

const response = await fetch("https://api.eggapi.ai/v1/generate", {
  method: "POST",
  headers: {
    "Authorization": "Bearer YOUR_API_KEY",
    "Content-Type": "application/json"
  },
  body: JSON.stringify({
    model: "nanobanana",
    prompt: "A clean editorial photo of a lemon tart on a steel table",
    aspect_ratio: "16:9",
    num_outputs: 1
  })
});

const { data: task } = await response.json();
console.log(task.id);

Response:

{
  "data": {
    "id": "gen_abc123def456",
    "status": "pending",
    "model": "nanobanana",
    "type": "image_generate",
    "cost": "$0.00",
    "created_at": "2026-05-08T10:30:00Z"
  },
  "error": null
}

Poll GET /v1/tasks/{id} for the final output.

Edit an Image

Send image_urls to switch into image editing mode:

curl -X POST https://api.eggapi.ai/v1/generate \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "nanobanana",
    "prompt": "Replace the background with a quiet marble kitchen",
    "image_urls": ["https://example.com/input.png"]
  }'

Response:

{
  "data": {
    "id": "gen_edit123456",
    "status": "pending",
    "model": "nanobanana",
    "type": "image_edit",
    "cost": "$0.00",
    "created_at": "2026-05-08T10:30:00Z"
  },
  "error": null
}

Completed Output

{
  "data": {
    "id": "gen_abc123def456",
    "status": "completed",
    "model": "nanobanana",
    "type": "image_generate",
    "output": {
      "url": "https://file.eggapi.ai/images/gen_abc123def456/0.png",
      "urls": ["https://file.eggapi.ai/images/gen_abc123def456/0.png"]
    },
    "cost": "$0.0100",
    "created_at": "2026-05-08T10:30:00Z",
    "started_at": "2026-05-08T10:30:01Z",
    "completed_at": "2026-05-08T10:30:10Z"
  },
  "error": null
}