> ## Documentation Index
> Fetch the complete documentation index at: https://docs.goenhance.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Nano Banana Pro API

> **Pricing** — per image, in tokens (USD at $0.02/token):

| image_size | tokens | USD |
|---|---|---|
| 1k | 7 | $0.140 |
| 2k | 7 | $0.140 |
| 4k | 12 | $0.240 |

Returns an `img_uuid`; poll GET /api/v1/jobs/detail (or use `custom_callback_url`) to get the generated image.



## OpenAPI

````yaml POST /api/v1/nano-banana-pro
openapi: 3.1.0
info:
  title: GoEnhance API
  description: ''
  version: 1.0.0
servers:
  - url: https://api.goenhance.ai
security:
  - bearerAuth: []
tags:
  - name: Basic
  - name: Video2Video
paths:
  /api/v1/nano-banana-pro:
    post:
      tags:
        - ImageAPI
      summary: Nano Banana Pro
      description: >-
        **Pricing** — per image, in tokens (USD at $0.02/token):


        | image_size | tokens | USD |

        |---|---|---|

        | 1k | 7 | $0.140 |

        | 2k | 7 | $0.140 |

        | 4k | 12 | $0.240 |


        Returns an `img_uuid`; poll GET /api/v1/jobs/detail (or use
        `custom_callback_url`) to get the generated image.
      parameters:
        - name: Authorization
          in: header
          description: ''
          required: false
          example: '{{Authorization}}'
          schema:
            type: string
      requestBody:
        content:
          application/json:
            schema:
              type: object
              properties:
                args:
                  type: object
                  properties:
                    prompt:
                      type: string
                      minLength: 1
                      maxLength: 2000
                      description: Text prompt describing the image.
                    ratio:
                      type: string
                      enum:
                        - auto
                        - '1:1'
                        - '16:9'
                        - '9:16'
                        - '4:3'
                        - '3:4'
                        - '2:3'
                        - '3:2'
                        - '4:5'
                        - '5:4'
                        - '21:9'
                      description: Aspect ratio.
                    image_size:
                      type: string
                      enum:
                        - 1k
                        - 2k
                        - 4k
                      default: 1k
                      description: >-
                        Output resolution. Pricing (tokens/image): 1k: 7, 2k: 7,
                        4k: 12.
                    web_search:
                      type: boolean
                      description: Enable web search grounding.
                    custom_callback_url:
                      type: string
                      format: uri
                      description: >-
                        Optional. A publicly accessible HTTPS URL. When the task
                        status changes (processing / success / failed),
                        GoEnhance sends a POST request to this URL. The request
                        body is identical to the response of GET
                        /api/v1/jobs/detail. If your server does not respond
                        with HTTP 200, the notification is retried up to 3
                        times, with a 3-second timeout per attempt.
                      example: https://your-server.com/goenhance/callback
                  required:
                    - prompt
              required:
                - args
            example:
              args:
                prompt: a beautiful girl
                image_size: 1k
      responses:
        '200':
          description: ''
          content:
            application/json:
              schema:
                type: object
                properties:
                  code:
                    type: integer
                  msg:
                    type: string
                  data:
                    type: object
                    properties:
                      img_uuid:
                        type: string
                    required:
                      - img_uuid
                required:
                  - code
                  - msg
                  - data
              examples:
                '1':
                  summary: Success
                  value:
                    code: 0
                    msg: Success
                    data:
                      img_uuid: c12b656c-747a-44fd-9c80-add79b0c52d5
                '2':
                  summary: Insufficient tokens
                  value:
                    code: 100
                    msg: tokens is not enough
          headers: {}
        '401':
          description: ''
          content:
            application/json:
              schema:
                type: object
                properties:
                  code:
                    type: integer
                  msg:
                    type: string
                required:
                  - code
                  - msg
          headers: {}
      deprecated: false
      security: []
components: {}

````