curl --request POST \
--url https://api.evolink.ai/v1/images/generations \
--header 'Authorization: Bearer <token>' \
--header 'Content-Type: application/json' \
--data '
{
"model": "doubao-seedream-4.0",
"prompt": "一片宁静的湖水倒映着夕阳的美景",
"size": "16:9",
"quality": "2K"
}
'import requests
url = "https://api.evolink.ai/v1/images/generations"
payload = {
"model": "doubao-seedream-4.0",
"prompt": "一片宁静的湖水倒映着夕阳的美景",
"size": "16:9",
"quality": "2K"
}
headers = {
"Authorization": "Bearer <token>",
"Content-Type": "application/json"
}
response = requests.post(url, json=payload, headers=headers)
print(response.text)const options = {
method: 'POST',
headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
body: JSON.stringify({
model: 'doubao-seedream-4.0',
prompt: '一片宁静的湖水倒映着夕阳的美景',
size: '16:9',
quality: '2K'
})
};
fetch('https://api.evolink.ai/v1/images/generations', options)
.then(res => res.json())
.then(res => console.log(res))
.catch(err => console.error(err));<?php
$curl = curl_init();
curl_setopt_array($curl, [
CURLOPT_URL => "https://api.evolink.ai/v1/images/generations",
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => "",
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 30,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => "POST",
CURLOPT_POSTFIELDS => json_encode([
'model' => 'doubao-seedream-4.0',
'prompt' => '一片宁静的湖水倒映着夕阳的美景',
'size' => '16:9',
'quality' => '2K'
]),
CURLOPT_HTTPHEADER => [
"Authorization: Bearer <token>",
"Content-Type: application/json"
],
]);
$response = curl_exec($curl);
$err = curl_error($curl);
curl_close($curl);
if ($err) {
echo "cURL Error #:" . $err;
} else {
echo $response;
}package main
import (
"fmt"
"strings"
"net/http"
"io"
)
func main() {
url := "https://api.evolink.ai/v1/images/generations"
payload := strings.NewReader("{\n \"model\": \"doubao-seedream-4.0\",\n \"prompt\": \"一片宁静的湖水倒映着夕阳的美景\",\n \"size\": \"16:9\",\n \"quality\": \"2K\"\n}")
req, _ := http.NewRequest("POST", url, payload)
req.Header.Add("Authorization", "Bearer <token>")
req.Header.Add("Content-Type", "application/json")
res, _ := http.DefaultClient.Do(req)
defer res.Body.Close()
body, _ := io.ReadAll(res.Body)
fmt.Println(string(body))
}HttpResponse<String> response = Unirest.post("https://api.evolink.ai/v1/images/generations")
.header("Authorization", "Bearer <token>")
.header("Content-Type", "application/json")
.body("{\n \"model\": \"doubao-seedream-4.0\",\n \"prompt\": \"一片宁静的湖水倒映着夕阳的美景\",\n \"size\": \"16:9\",\n \"quality\": \"2K\"\n}")
.asString();require 'uri'
require 'net/http'
url = URI("https://api.evolink.ai/v1/images/generations")
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n \"model\": \"doubao-seedream-4.0\",\n \"prompt\": \"一片宁静的湖水倒映着夕阳的美景\",\n \"size\": \"16:9\",\n \"quality\": \"2K\"\n}"
response = http.request(request)
puts response.read_body{
"created": 1757165031,
"id": "task-unified-1757165031-seedream4d",
"model": "doubao-seedream-4.0",
"object": "image.generation.task",
"progress": 0,
"status": "pending",
"task_info": {
"can_cancel": true,
"estimated_time": 45
},
"type": "image",
"usage": {
"billing_rule": "per_call",
"credits_reserved": 1.8,
"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: doubao-seedream-4.0",
"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"
}
}Seedream 4.0 图像生成
- Seedream 4.0 (doubao-seedream-4.0) 模型支持文本转图片、图生图、图像编辑等多种生成模式
- 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
curl --request POST \
--url https://api.evolink.ai/v1/images/generations \
--header 'Authorization: Bearer <token>' \
--header 'Content-Type: application/json' \
--data '
{
"model": "doubao-seedream-4.0",
"prompt": "一片宁静的湖水倒映着夕阳的美景",
"size": "16:9",
"quality": "2K"
}
'import requests
url = "https://api.evolink.ai/v1/images/generations"
payload = {
"model": "doubao-seedream-4.0",
"prompt": "一片宁静的湖水倒映着夕阳的美景",
"size": "16:9",
"quality": "2K"
}
headers = {
"Authorization": "Bearer <token>",
"Content-Type": "application/json"
}
response = requests.post(url, json=payload, headers=headers)
print(response.text)const options = {
method: 'POST',
headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
body: JSON.stringify({
model: 'doubao-seedream-4.0',
prompt: '一片宁静的湖水倒映着夕阳的美景',
size: '16:9',
quality: '2K'
})
};
fetch('https://api.evolink.ai/v1/images/generations', options)
.then(res => res.json())
.then(res => console.log(res))
.catch(err => console.error(err));<?php
$curl = curl_init();
curl_setopt_array($curl, [
CURLOPT_URL => "https://api.evolink.ai/v1/images/generations",
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => "",
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 30,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => "POST",
CURLOPT_POSTFIELDS => json_encode([
'model' => 'doubao-seedream-4.0',
'prompt' => '一片宁静的湖水倒映着夕阳的美景',
'size' => '16:9',
'quality' => '2K'
]),
CURLOPT_HTTPHEADER => [
"Authorization: Bearer <token>",
"Content-Type: application/json"
],
]);
$response = curl_exec($curl);
$err = curl_error($curl);
curl_close($curl);
if ($err) {
echo "cURL Error #:" . $err;
} else {
echo $response;
}package main
import (
"fmt"
"strings"
"net/http"
"io"
)
func main() {
url := "https://api.evolink.ai/v1/images/generations"
payload := strings.NewReader("{\n \"model\": \"doubao-seedream-4.0\",\n \"prompt\": \"一片宁静的湖水倒映着夕阳的美景\",\n \"size\": \"16:9\",\n \"quality\": \"2K\"\n}")
req, _ := http.NewRequest("POST", url, payload)
req.Header.Add("Authorization", "Bearer <token>")
req.Header.Add("Content-Type", "application/json")
res, _ := http.DefaultClient.Do(req)
defer res.Body.Close()
body, _ := io.ReadAll(res.Body)
fmt.Println(string(body))
}HttpResponse<String> response = Unirest.post("https://api.evolink.ai/v1/images/generations")
.header("Authorization", "Bearer <token>")
.header("Content-Type", "application/json")
.body("{\n \"model\": \"doubao-seedream-4.0\",\n \"prompt\": \"一片宁静的湖水倒映着夕阳的美景\",\n \"size\": \"16:9\",\n \"quality\": \"2K\"\n}")
.asString();require 'uri'
require 'net/http'
url = URI("https://api.evolink.ai/v1/images/generations")
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n \"model\": \"doubao-seedream-4.0\",\n \"prompt\": \"一片宁静的湖水倒映着夕阳的美景\",\n \"size\": \"16:9\",\n \"quality\": \"2K\"\n}"
response = http.request(request)
puts response.read_body{
"created": 1757165031,
"id": "task-unified-1757165031-seedream4d",
"model": "doubao-seedream-4.0",
"object": "image.generation.task",
"progress": 0,
"status": "pending",
"task_info": {
"can_cancel": true,
"estimated_time": 45
},
"type": "image",
"usage": {
"billing_rule": "per_call",
"credits_reserved": 1.8,
"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: doubao-seedream-4.0",
"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
图像生成模型名称
doubao-seedream-4.0 "doubao-seedream-4.0"
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,限制为2000token
2000"一片宁静的湖水倒映着夕阳的美景"
规定生成图像的上限,支持[1,15]之间任意整数值
注意:
-
如需生成多图,请在提示词中加入: "
生成2张不同的图片" 之类的提示词 -
参考图像数量 + 最终生成图像数量 ≤ 15张
-
如出现:参考图像数量 + 提示词内需要生成的图像数 > 15张,且提示词内 需要生成的图像数 ≤ 参数n的值,则 最终生成的图像数 = 15 - 参考图像数量
-
单次请求会根据
n的值进行预扣费,实际扣费以生成图像数量为准
1
生成图像的尺寸,支持两种格式:
方式1 - 比例格式:
auto、1:1、2:3、3:2、3:4、4:3、4:5、5:4、9:16、16:9、21:9、9:21- 配合
quality参数使用,系统自动生成对应比例和分辨率的图片,无需手动指定像素
方式2 - 像素格式:
- 宽度x高度,如:
1280x720、1024x1024、4096x4096等在范围内的值 - 总像素取值范围:
[921600, 16777216] - 宽高比取值范围:
[1/16, 16]
"16:9"
分辨率档位,与 size 的比例格式配合使用。
| 比例 | 1K | 2K | 4K |
|---|---|---|---|
1:1 | 1024×1024 | 2048×2048 | 4096×4096 |
2:3 | 832×1248 | 1664×2496 | 3328×4992 |
3:2 | 1248×832 | 2496×1664 | 4992×3328 |
3:4 | 864×1152 | 1728×2304 | 3520×4704 |
4:3 | 1152×864 | 2304×1728 | 4704×3520 |
4:5 | 896×1120 | 1792×2240 | 3584×4480 |
5:4 | 1120×896 | 2240×1792 | 4480×3584 |
9:16 | 720×1280 | 1600×2848 | 3040×5504 |
16:9 | 1280×720 | 2848×1600 | 5504×3040 |
21:9 | 1512×648 | 3136×1344 | 6240×2656 |
9:21 | 648×1512 | 1344×3136 | 2656×6240 |
1K, 2K, 4K "2K"
提示词优化策略,用于设置提示词优化功能的模式
可选值:
standard:标准模式,生成内容质量更高,耗时较长fast:快速模式,生成速度更快,质量一般
standard, fast "standard"
参考图像URL列表,用于图生图与图像编辑功能
注意:
- 单次请求支持输入图像数量:
14张 - 图像大小:不超过
10MB - 支持的图像格式:
.jpeg、.jpg、.png、.webp、.bmp、.tiff、.gif - 宽高比(宽/高)范围:
[1/16, 16] - 宽高长度(px)> 14
- 总像素:不超过
6000×6000 - 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)
14[
"https://example.com/image1.png",
"https://example.com/image2.png"
]
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
"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
1757165031
任务ID
"task-unified-1757165031-seedream4d"
实际使用的模型名称
"doubao-seedream-4.0"
任务的具体类型
image.generation.task 任务进度百分比 (0-100)
0 <= x <= 1000
任务状态
pending, processing, completed, failed "pending"
异步任务信息
Show child attributes
Show child attributes
任务的输出类型
text, image, audio, video "image"
使用量和计费信息
Show child attributes
Show child attributes