Low Variation（微调变体）

对已 upscale 的单图做弱变体（varySubtle，与 Variation 行为一致，仅计费 key 不同）

请求示例

bash curl --request POST \ --url https://api.openveer.com/v1/midjourney/generations/low-variation \ --header 'Authorization: Bearer <token>' \ --header 'Content-Type: application/json' \ --data '{ "task_id": "task_01KQW0D3WJ2QYJP9E3H7GZ4D2R", "index": 1, "speed": "fast" }'

```python
import requests

url = "https://api.openveer.com/v1/midjourney/generations/low-variation"

payload = {
"task_id": "task_01KQW0D3WJ2QYJP9E3H7GZ4D2R",
"index": 1,
"speed": "fast"
}

headers = {
"Authorization": "Bearer ",
"Content-Type": "application/json"
}

response = requests.post(url, json=payload, headers=headers)

print(response.json())
```

```javascript
const url = "https://api.openveer.com/v1/midjourney/generations/low-variation";

const payload = {
task_id: "task_01KQW0D3WJ2QYJP9E3H7GZ4D2R",
index: 1,
speed: "fast"
};

const headers = {
"Authorization": "Bearer ",
"Content-Type": "application/json"
};

fetch(url, {
method: "POST",
headers: headers,
body: JSON.stringify(payload)
})
.then(response => response.json())
.then(data => console.log(data))
.catch(error => console.error('Error:', error));
```

```go
package main

import (
"bytes"
"encoding/json"
"fmt"
"io/ioutil"
"net/http"
)

func main() {
url := "https://api.openveer.com/v1/midjourney/generations/low-variation"

  payload := map[string]interface{}{
      "task_id": "task_01KQW0D3WJ2QYJP9E3H7GZ4D2R",
      "index": 1,
      "speed": "fast",
  }

  jsonData, _ := json.Marshal(payload)

  req, _ := http.NewRequest("POST", url, bytes.NewBuffer(jsonData))
  req.Header.Set("Authorization", "Bearer <token>")
  req.Header.Set("Content-Type", "application/json")

  client := &http.Client{}
  resp, err := client.Do(req)
  if err != nil {
      panic(err)
  }
  defer resp.Body.Close()

  body, _ := ioutil.ReadAll(resp.Body)
  fmt.Println(string(body))

}
```

```java
import java.net.http.HttpClient;
import java.net.http.HttpRequest;
import java.net.http.HttpResponse;
import java.net.URI;

public class Main {
public static void main(String[] args) throws Exception {
String url = "https://api.openveer.com/v1/midjourney/generations/low-variation";

      String payload = """
      {
        "task_id": "task_01KQW0D3WJ2QYJP9E3H7GZ4D2R",
        "index": 1,
        "speed": "fast"
      }
      """;

      HttpClient client = HttpClient.newHttpClient();
      HttpRequest request = HttpRequest.newBuilder()
          .uri(URI.create(url))
          .header("Authorization", "Bearer <token>")
          .header("Content-Type", "application/json")
          .POST(HttpRequest.BodyPublishers.ofString(payload))
          .build();

      HttpResponse<String> response = client.send(request,
          HttpResponse.BodyHandlers.ofString());

      System.out.println(response.body());
  }

}
```

```php
"task_01KQW0D3WJ2QYJP9E3H7GZ4D2R", "index" => 1, "speed" => "fast", ]; $ch = curl_init($url); curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); curl_setopt($ch, CURLOPT_POST, true); curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($payload)); curl_setopt($ch, CURLOPT_HTTPHEADER, [ "Authorization: Bearer ", "Content-Type: application/json" ]); $response = curl_exec($ch); curl_close($ch); echo $response; ?>

```

```ruby
require 'net/http'
require 'json'
require 'uri'

url = URI("https://api.openveer.com/v1/midjourney/generations/low-variation")

payload = {
task_id: "task_01KQW0D3WJ2QYJP9E3H7GZ4D2R",
index: 1,
speed: "fast",
}

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Post.new(url)
request["Authorization"] = "Bearer "
request["Content-Type"] = "application/json"
request.body = payload.to_json

response = http.request(request)
puts response.body
```

```swift
import Foundation

let url = URL(string: "https://api.openveer.com/v1/midjourney/generations/low-variation")!

let payload: [String: Any] = [
"task_id": "task_01KQW0D3WJ2QYJP9E3H7GZ4D2R",
"index": 1,
"speed": "fast",
]

var request = URLRequest(url: url)
request.httpMethod = "POST"
request.setValue("Bearer ", forHTTPHeaderField: "Authorization")
request.setValue("application/json", forHTTPHeaderField: "Content-Type")
request.httpBody = try? JSONSerialization.data(withJSONObject: payload)

let task = URLSession.shared.dataTask(with: request) { data, response, error in
if let error = error {
print("Error: (error)")
return
}

  if let data = data, let responseString = String(data: data, encoding: .utf8) {
      print(responseString)
  }

}

task.resume()
```

```csharp
using System;
using System.Net.Http;
using System.Text;
using System.Threading.Tasks;

class Program
{
static async Task Main(string[] args)
{
var url = "https://api.openveer.com/v1/midjourney/generations/low-variation";

      var payload = @"{
          ""task_id"": ""task_01KQW0D3WJ2QYJP9E3H7GZ4D2R"",
          ""index"": 1,
          ""speed"": ""fast""
      }";

      using var client = new HttpClient();
      client.DefaultRequestHeaders.Add("Authorization", "Bearer <token>");

      var content = new StringContent(payload, Encoding.UTF8, "application/json");
      var response = await client.PostAsync(url, content);
      var result = await response.Content.ReadAsStringAsync();

      Console.WriteLine(result);
  }

}
```

```c
#include
#include

int main(void) {
CURL *curl;
CURLcode res;

  curl_global_init(CURL_GLOBAL_DEFAULT);
  curl = curl_easy_init();

  if(curl) {
      const char *url = "https://api.openveer.com/v1/midjourney/generations/low-variation";
      const char *payload = "{"
          "\"task_id\":\"task_01KQW0D3WJ2QYJP9E3H7GZ4D2R\","
          "\"index\":1,"
          "\"speed\":\"fast\""
      "}";

      struct curl_slist *headers = NULL;
      headers = curl_slist_append(headers, "Authorization: Bearer <token>");
      headers = curl_slist_append(headers, "Content-Type: application/json");

      curl_easy_setopt(curl, CURLOPT_URL, url);
      curl_easy_setopt(curl, CURLOPT_POSTFIELDS, payload);
      curl_easy_setopt(curl, CURLOPT_HTTPHEADER, headers);

      res = curl_easy_perform(curl);

      if(res != CURLE_OK) {
          fprintf(stderr, "curl_easy_perform() failed: %s\n",
                  curl_easy_strerror(res));
      }

      curl_slist_free_all(headers);
      curl_easy_cleanup(curl);
  }

  curl_global_cleanup();
  return 0;

}
```

```objectivec
#import

int main(int argc, const char * argv[]) {
@autoreleasepool {
NSURL *url = [NSURL URLWithString:@"https://api.openveer.com/v1/midjourney/generations/low-variation"];

      NSDictionary *payload = @{
          @"task_id": @"task_01KQW0D3WJ2QYJP9E3H7GZ4D2R",
          @"index": @1,
          @"speed": @"fast",
      };

      NSError *error;
      NSData *jsonData = [NSJSONSerialization dataWithJSONObject:payload
                                                        options:0
                                                          error:&error];

      NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
      [request setHTTPMethod:@"POST"];
      [request setValue:@"Bearer <token>" forHTTPHeaderField:@"Authorization"];
      [request setValue:@"application/json" forHTTPHeaderField:@"Content-Type"];
      [request setHTTPBody:jsonData];

      NSURLSessionDataTask *task = [[NSURLSession sharedSession] 
          dataTaskWithRequest:request
          completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) {
              if (error) {
                  NSLog(@"Error: %@", error);
                  return;
              }
              NSString *result = [[NSString alloc] initWithData:data 
                                                      encoding:NSUTF8StringEncoding];
              NSLog(@"%@", result);
          }];

      [task resume];
      [[NSRunLoop mainRunLoop] run];
  }
  return 0;

}
```

```ocaml
( Requires cohttp and yojson libraries )
open Lwt
open Cohttp
open Cohttp_lwt_unix

let url = "https://api.openveer.com/v1/midjourney/generations/low-variation"

let payload = {|{
"task_id": "task_01KQW0D3WJ2QYJP9E3H7GZ4D2R",
"index": 1,
"speed": "fast"
}|}

let () =
let headers = Header.init ()
|> fun h -> Header.add h "Authorization" "Bearer "
|> fun h -> Header.add h "Content-Type" "application/json"
in
let body = Cohttp_lwt.Body.of_string payload in

let response = Client.post ~headers ~body (Uri.of_string url) >>= fun (resp, body) ->
  body |> Cohttp_lwt.Body.to_string >|= fun body_str ->
  print_endline body_str
in
Lwt_main.run response

```

```dart
import 'dart:convert';
import 'package:http/http.dart' as http;

void main() async {
final url = Uri.parse('https://api.openveer.com/v1/midjourney/generations/low-variation');

final payload = {
  'task_id': 'task_01KQW0D3WJ2QYJP9E3H7GZ4D2R',
  'index': 1,
  'speed': 'fast',
};

final response = await http.post(
  url,
  headers: {
    'Authorization': 'Bearer <token>',
    'Content-Type': 'application/json',
  },
  body: jsonEncode(payload),
);

print(response.body);

}
```

```r
library(httr)
library(jsonlite)

url <- "https://api.openveer.com/v1/midjourney/generations/low-variation"

payload <- list(
task_id = "task_01KQW0D3WJ2QYJP9E3H7GZ4D2R",
index = 1,
speed = "fast"
)

response <- POST(
url,
add_headers(
Authorization = "Bearer ",
Content-Type = "application/json"
),
body = toJSON(payload, auto_unbox = TRUE),
encode = "raw"
)

cat(content(response, "text"))
```

响应示例

json { "code": 200, "data": [ { "status": "submitted", "task_id": "task_01KV52C0TEJSYZMCG0NCS4YWKK" } ] }

json { "error": { "code": 400, "message": "请求参数无效", "type": "invalid_request_error" } }

json { "error": { "code": 401, "message": "身份验证失败，请检查您的API密钥", "type": "authentication_error" } }

json { "error": { "code": 402, "message": "账户余额不足，请充值后再试", "type": "payment_required" } }

json { "error": { "code": 403, "message": "访问被禁止，您没有权限访问此资源", "type": "permission_error" } }

json { "error": { "code": 404, "message": "任务不存在", "type": "not_found_error" } }

json { "error": { "code": 429, "message": "请求过于频繁，请稍后再试", "type": "rate_limit_error" } }

json { "error": { "code": 500, "message": "服务器内部错误，请稍后重试", "type": "server_error" } }

json { "error": { "code": 502, "message": "网关错误，服务器暂时不可用", "type": "bad_gateway" } }

对已 upscale 的单图做弱变体（varySubtle，与 Variation 行为完全一致）。独立 endpoint 主要用于命名一致性（与 High Variation 对偶）和价格独立配置；新接入推荐直接用 Variation。

参数

自动匹配

优先匹配 Vary (Subtle)，失败回退 Make Variations。

请求示例

{
  "task_id": "task_01KQW0D3WJ2QYJP9E3H7GZ4D2R",
  "index": 1,
  "speed": "fast"
}

注意

• 通常先对四宫格调用 upscale，再拿 upscale 产生的新 task_id 调用本接口。
• 当前实现中未传 custom_id 时仍要求 index，虽然按钮匹配本身不使用 index。
• 来源任务的版本 metadata 会自动继承；如需区分速度价格，可配置 midjourney@low_variation-fast / midjourney@low_variation-turbo。

返回

提交成功返回新的本地 task_id，请轮询 GET /v1/tasks/{task_id} 查询结果。