curl --request POST \
--url https://api.evolink.ai/v1/images/generations \
--header 'Authorization: Bearer <token>' \
--header 'Content-Type: application/json' \
--data '
{
"model": "gemini-nano-banana-2.1",
"prompt": "一只猫在草地上玩耍",
"size": "16:9",
"quality": "2K"
}
'{
"created": 1757165031,
"id": "task-unified-1757165031-uyujaw3d",
"model": "gemini-nano-banana-2.1",
"object": "image.generation.task",
"progress": 0,
"status": "pending",
"task_info": {
"can_cancel": true,
"estimated_time": 45
},
"type": "image",
"usage": {
"billing_rule": "per_image",
"credits_reserved": 3.0845,
"user_group": "default"
}
}{
"error": {
"code": "invalid_request",
"message": "Invalid request parameters",
"type": "invalid_request_error"
}
}{
"error": {
"code": "unauthorized",
"message": "Invalid or expired token",
"type": "authentication_error"
}
}{
"error": {
"code": "insufficient_quota",
"message": "Insufficient quota. Please top up your account.",
"type": "insufficient_quota"
}
}{
"error": {
"code": "model_access_denied",
"message": "Token does not have access to model: gemini-nano-banana-2.1",
"type": "invalid_request_error"
}
}{
"error": {
"code": "rate_limit_exceeded",
"message": "Too many requests, please try again later",
"type": "rate_limit_error"
}
}{
"error": {
"code": "internal_error",
"message": "Internal server error",
"type": "api_error"
}
}Nanobanana 2.1
Nanobanana 2.1 图像生成
- Nano Banana 2.1 (gemini-nano-banana-2.1) 模型支持文本转图片、图生图、图像编辑、多图合成等多种生成模式,可输出
1K、2K、4K三档分辨率 - 异步处理模式,使用返回的任务ID 进行查询
- 生成的图像链接,有效期为24小时,请尽快保存
- 计费:输出图按分辨率档位计费,输入图按张计费,联网搜索与图片搜索按实际搜索次数计费,提示词文本、文本输出与思考按 token 计费;实际扣费以任务查询返回的
usage为准
POST
/
v1
/
images
/
generations
curl --request POST \
--url https://api.evolink.ai/v1/images/generations \
--header 'Authorization: Bearer <token>' \
--header 'Content-Type: application/json' \
--data '
{
"model": "gemini-nano-banana-2.1",
"prompt": "一只猫在草地上玩耍",
"size": "16:9",
"quality": "2K"
}
'{
"created": 1757165031,
"id": "task-unified-1757165031-uyujaw3d",
"model": "gemini-nano-banana-2.1",
"object": "image.generation.task",
"progress": 0,
"status": "pending",
"task_info": {
"can_cancel": true,
"estimated_time": 45
},
"type": "image",
"usage": {
"billing_rule": "per_image",
"credits_reserved": 3.0845,
"user_group": "default"
}
}{
"error": {
"code": "invalid_request",
"message": "Invalid request parameters",
"type": "invalid_request_error"
}
}{
"error": {
"code": "unauthorized",
"message": "Invalid or expired token",
"type": "authentication_error"
}
}{
"error": {
"code": "insufficient_quota",
"message": "Insufficient quota. Please top up your account.",
"type": "insufficient_quota"
}
}{
"error": {
"code": "model_access_denied",
"message": "Token does not have access to model: gemini-nano-banana-2.1",
"type": "invalid_request_error"
}
}{
"error": {
"code": "rate_limit_exceeded",
"message": "Too many requests, please try again later",
"type": "rate_limit_error"
}
}{
"error": {
"code": "internal_error",
"message": "Internal server error",
"type": "api_error"
}
}授权
##所有接口均需要使用Bearer Token进行认证##
获取 API Key :
访问 API Key 管理页面 获取您的 API Key
使用时在请求头中添加:
Authorization: Bearer YOUR_API_KEY
请求体
application/json
图像生成模型名称,官方通道,稳定性和可控性更好,适用于商业场景
可用选项:
gemini-nano-banana-2.1 示例:
"gemini-nano-banana-2.1"
提示词,描述想要生成的图像,或描述如何编辑已输入的图像,最多 4000 token
示例:
"一只猫在草地上玩耍"
生成图像的宽高比,默认值为auto
可用选项:
auto, 1:1, 1:4, 4:1, 1:8, 8:1, 2:3, 3:2, 3:4, 4:3, 4:5, 5:4, 9:16, 16:9, 21:9 生成图像的分辨率档位,默认为2K
注意:
- 不同档位价格不同,输出图按所选档位计费,建议显式传入
可用选项:
1K, 2K, 4K 参考图像URL列表,用于图生图、图像编辑与多图合成
注意:
- 单次请求支持输入图像数量:
14张 - 图像大小:不超过
20MB - 支持的文件格式:
.jpeg、.jpg、.png、.webp - 图像URL需要服务器能直接查看,或者图像URL在访问时会直接进行下载(一般这种URL是以图像的扩展名作为结尾,例如
.png、.jpg) - 输入图像按张计费
Maximum array length:
14示例:
[
"https://example.com/image1.png",
"https://example.com/image2.png"
]
模型扩展参数
Show child attributes
Show child attributes
任务完成后的HTTPS回调地址
回调时机:
- 任务完成(completed)、失败(failed)或取消(cancelled)时触发
- 在计费确认完成后发送
安全限制:
- 仅支持HTTPS协议
- 禁止回调到内网IP地址(127.0.0.1、10.x.x.x、172.16-31.x.x、192.168.x.x等)
- URL长度不超过
2048字符
回调机制:
- 超时时间:
10秒 - 失败后最多重试
3次(会分别在失败的1秒/2秒/4秒后进行重试) - 回调响应体格式与任务查询接口返回的格式一致
- 回调地址若返回2xx状态码视为成功,其他状态码会触发重试
示例:
"https://your-domain.com/webhooks/image-task-completed"
响应
图像生成任务创建成功
任务创建时间戳
示例:
1757165031
任务ID
示例:
"task-unified-1757165031-uyujaw3d"
实际使用的模型名称
示例:
"gemini-nano-banana-2.1"
任务的具体类型
可用选项:
image.generation.task 任务进度百分比 (0-100)
必填范围:
0 <= x <= 100示例:
0
任务状态
可用选项:
pending, processing, completed, failed 示例:
"pending"
异步任务信息
Show child attributes
Show child attributes
任务的输出类型
可用选项:
text, image, audio, video 示例:
"image"
使用量和计费信息
Show child attributes
Show child attributes