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

# Nano Banana 文生图

> Nano Banana 文生图 API 根据自然语言生成图像，可用方形、竖版或横版构图探索不同主体和风格。

> [!TIP]
>
> 1. 提交后会返回 `task_id`。如果提供了 `callback_url`，当任务状态变为 `finished` 或 `failed` 时，系统会向 `callback_url` 发送 POST 请求。
> 2. 无论是否提供 `callback_url`，都可以通过统一的[查询任务状态](https://docs.vidgo.ai/zh/api-manual/task-management/status.md)接口获取结果。

使用 Nano Banana 根据自然语言生成图像，以方形、竖版或横版构图探索不同主体和风格。

## 模型

* **google/nano-banana/text-to-image** - 根据文本提示词生成图像。

## 功能

* 根据文本提示词生成图像。

## 输出选项

### 图像尺寸

* `size`：可选。可选值：`1:1`、`2:3`、`3:2`、`3:4`、`4:3`、`4:5`、`5:4`、`9:16`、`16:9`、`21:9`。

## 高级参数

`model` 和可选的 `callback_url` 放在请求根级。所有工作流参数（包括输出选项）都放在 `input` 内。

### 提示词

* `prompt`：必填。描述期望的图像。长度：**1-5,000 个字符**。
* 至少包含一个非空白字符。


## OpenAPI

````yaml zh/api-manual/image-series/google-nano-banana-text-to-image.json POST /api/generate/submit
openapi: 3.0.0
info:
  title: Vidgo API - Nano Banana 文生图
  description: 使用 Nano Banana 根据自然语言生成图像，以方形、竖版或横版构图探索不同主体和风格。
  version: 1.0.0
servers:
  - url: https://api.vidgo.ai
security:
  - BearerAuth: []
paths:
  /api/generate/submit:
    post:
      tags:
        - Image Series
      summary: Nano Banana 文生图
      description: 提交 Nano Banana 任务：model 和可选的 callback_url 放在请求根级，生成参数放在 input 内。
      operationId: submit_google_nano_banana_text_to_image
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              required:
                - model
                - input
              additionalProperties: true
              properties:
                model:
                  type: string
                  example: google/nano-banana/text-to-image
                  enum:
                    - google/nano-banana/text-to-image
                input:
                  type: object
                  required:
                    - prompt
                  properties:
                    prompt:
                      type: string
                      maxLength: 5000
                      minLength: 1
                      description: 描述要生成的图像，1–5,000 个字符，且至少包含一个非空白字符。
                    size:
                      type: string
                      enum:
                        - '1:1'
                        - '2:3'
                        - '3:2'
                        - '3:4'
                        - '4:3'
                        - '4:5'
                        - '5:4'
                        - '9:16'
                        - '16:9'
                        - '21:9'
                      description: 输出图像宽高比。
                  additionalProperties: false
                callback_url:
                  type: string
                  nullable: true
                  description: 公开的 HTTP(S) URL，任务变为 finished 或 failed 时会向其发送 POST 通知。
              description: model 和可选的 callback_url 放在请求根级，生成参数放在 input 内。
            examples:
              basic:
                summary: 基础流程
                value:
                  model: google/nano-banana/text-to-image
                  input:
                    prompt: >-
                      A quiet forest under soft morning light, with natural
                      detail.
                    size: '16:9'
              callback:
                summary: 接收完成回调
                value:
                  model: google/nano-banana/text-to-image
                  input:
                    prompt: >-
                      A quiet forest under soft morning light, with natural
                      detail.
                    size: '16:9'
                  callback_url: https://your-domain.com/callback
      responses:
        '200':
          description: 任务已提交
          content:
            application/json:
              schema:
                type: object
                required:
                  - code
                  - data
                properties:
                  code:
                    type: integer
                    enum:
                      - 200
                  data:
                    type: object
                    required:
                      - task_id
                      - status
                      - created_time
                    properties:
                      task_id:
                        type: string
                      status:
                        type: string
                        enum:
                          - not_started
                          - running
                          - finished
                          - failed
                      created_time:
                        type: string
                        format: date-time
              example:
                code: 200
                data:
                  task_id: task-unified-example
                  status: running
                  created_time: '2026-09-10T08:00:00'
        '400':
          description: 请求校验错误或账户余额不足
          content:
            application/json:
              schema:
                type: object
                required:
                  - detail
                properties:
                  detail:
                    oneOf:
                      - type: string
                      - type: object
                        additionalProperties: true
                      - type: array
                        items: {}
        '401':
          description: 凭证无效
          content:
            application/json:
              schema:
                type: object
                required:
                  - detail
                properties:
                  detail:
                    oneOf:
                      - type: string
                      - type: object
                        additionalProperties: true
                      - type: array
                        items: {}
        '403':
          description: 拒绝访问
          content:
            application/json:
              schema:
                type: object
                required:
                  - detail
                properties:
                  detail:
                    oneOf:
                      - type: string
                      - type: object
                        additionalProperties: true
                      - type: array
                        items: {}
        '404':
          description: 模型未知或已停用
          content:
            application/json:
              schema:
                type: object
                required:
                  - detail
                properties:
                  detail:
                    oneOf:
                      - type: string
                      - type: object
                        additionalProperties: true
                      - type: array
                        items: {}
        '408':
          description: 请求超时
          content:
            text/plain:
              schema:
                type: string
              example: Request timeout
        '422':
          description: JSON 无效或请求体不是对象
          content:
            application/json:
              schema:
                type: object
                required:
                  - detail
                properties:
                  detail:
                    oneOf:
                      - type: string
                      - type: object
                        additionalProperties: true
                      - type: array
                        items: {}
        '429':
          description: 超出速率限制或 API Key 积分限额
          content:
            application/json:
              schema:
                type: object
                required:
                  - detail
                properties:
                  detail:
                    oneOf:
                      - type: string
                      - type: object
                        additionalProperties: true
                      - type: array
                        items: {}
        '500':
          description: 内部错误
          content:
            application/json:
              schema:
                type: object
                required:
                  - detail
                properties:
                  detail:
                    oneOf:
                      - type: string
                      - type: object
                        additionalProperties: true
                      - type: array
                        items: {}
        '502':
          description: 任务创建错误
          content:
            application/json:
              schema:
                type: object
                required:
                  - detail
                properties:
                  detail:
                    oneOf:
                      - type: string
                      - type: object
                        additionalProperties: true
                      - type: array
                        items: {}
        '503':
          description: 模型服务暂时不可用
          content:
            application/json:
              schema:
                type: object
                required:
                  - detail
                properties:
                  detail:
                    oneOf:
                      - type: string
                      - type: object
                        additionalProperties: true
                      - type: array
                        items: {}
components:
  securitySchemes:
    BearerAuth:
      type: http
      scheme: bearer
      description: 使用 VIDGO_API_KEY。

````

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