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POST
/
v1
/
chat
/
completions
Chat Completions
curl --request POST \
  --url https://www.anyfast.ai/v1/chat/completions \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "model": "doubao-seed-1-6-251015",
  "messages": [
    {
      "role": "user",
      "content": [
        {
          "type": "image_url",
          "image_url": {
            "url": "https://ark-project.tos-cn-beijing.volces.com/doc_image/ark_demo_img_1.png"
          }
        },
        {
          "type": "text",
          "text": "What is in this image?"
        }
      ]
    }
  ],
  "max_tokens": 1024,
  "temperature": 1,
  "top_p": 0.5,
  "stream": false,
  "stop": [
    "<string>"
  ]
}
'
import requests

url = "https://www.anyfast.ai/v1/chat/completions"

payload = {
"model": "doubao-seed-1-6-251015",
"messages": [
{
"role": "user",
"content": [
{
"type": "image_url",
"image_url": { "url": "https://ark-project.tos-cn-beijing.volces.com/doc_image/ark_demo_img_1.png" }
},
{
"type": "text",
"text": "What is in this image?"
}
]
}
],
"max_tokens": 1024,
"temperature": 1,
"top_p": 0.5,
"stream": False,
"stop": ["<string>"]
}
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-seed-1-6-251015',
messages: [
{
role: 'user',
content: [
{
type: 'image_url',
image_url: {
url: 'https://ark-project.tos-cn-beijing.volces.com/doc_image/ark_demo_img_1.png'
}
},
{type: 'text', text: 'What is in this image?'}
]
}
],
max_tokens: 1024,
temperature: 1,
top_p: 0.5,
stream: false,
stop: ['<string>']
})
};

fetch('https://www.anyfast.ai/v1/chat/completions', 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://www.anyfast.ai/v1/chat/completions",
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-seed-1-6-251015',
'messages' => [
[
'role' => 'user',
'content' => [
[
'type' => 'image_url',
'image_url' => [
'url' => 'https://ark-project.tos-cn-beijing.volces.com/doc_image/ark_demo_img_1.png'
]
],
[
'type' => 'text',
'text' => 'What is in this image?'
]
]
]
],
'max_tokens' => 1024,
'temperature' => 1,
'top_p' => 0.5,
'stream' => false,
'stop' => [
'<string>'
]
]),
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://www.anyfast.ai/v1/chat/completions"

payload := strings.NewReader("{\n \"model\": \"doubao-seed-1-6-251015\",\n \"messages\": [\n {\n \"role\": \"user\",\n \"content\": [\n {\n \"type\": \"image_url\",\n \"image_url\": {\n \"url\": \"https://ark-project.tos-cn-beijing.volces.com/doc_image/ark_demo_img_1.png\"\n }\n },\n {\n \"type\": \"text\",\n \"text\": \"What is in this image?\"\n }\n ]\n }\n ],\n \"max_tokens\": 1024,\n \"temperature\": 1,\n \"top_p\": 0.5,\n \"stream\": false,\n \"stop\": [\n \"<string>\"\n ]\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://www.anyfast.ai/v1/chat/completions")
.header("Authorization", "Bearer <token>")
.header("Content-Type", "application/json")
.body("{\n \"model\": \"doubao-seed-1-6-251015\",\n \"messages\": [\n {\n \"role\": \"user\",\n \"content\": [\n {\n \"type\": \"image_url\",\n \"image_url\": {\n \"url\": \"https://ark-project.tos-cn-beijing.volces.com/doc_image/ark_demo_img_1.png\"\n }\n },\n {\n \"type\": \"text\",\n \"text\": \"What is in this image?\"\n }\n ]\n }\n ],\n \"max_tokens\": 1024,\n \"temperature\": 1,\n \"top_p\": 0.5,\n \"stream\": false,\n \"stop\": [\n \"<string>\"\n ]\n}")
.asString();
require 'uri'
require 'net/http'

url = URI("https://www.anyfast.ai/v1/chat/completions")

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-seed-1-6-251015\",\n \"messages\": [\n {\n \"role\": \"user\",\n \"content\": [\n {\n \"type\": \"image_url\",\n \"image_url\": {\n \"url\": \"https://ark-project.tos-cn-beijing.volces.com/doc_image/ark_demo_img_1.png\"\n }\n },\n {\n \"type\": \"text\",\n \"text\": \"What is in this image?\"\n }\n ]\n }\n ],\n \"max_tokens\": 1024,\n \"temperature\": 1,\n \"top_p\": 0.5,\n \"stream\": false,\n \"stop\": [\n \"<string>\"\n ]\n}"

response = http.request(request)
puts response.read_body
{
  "id": "chatcmpl-abc123",
  "object": "chat.completion",
  "created": 1774236644,
  "model": "doubao-seed-1-6-251015",
  "choices": [
    {
      "index": 123,
      "message": {
        "role": "assistant",
        "content": "The image contains 3 models: Doubao-Seed-1.8, DeepSeek-V3.2, GLM-4.7.",
        "reasoning_content": "<string>"
      }
    }
  ],
  "usage": {
    "prompt_tokens": 1355,
    "completion_tokens": 87,
    "total_tokens": 1442,
    "completion_tokens_details": {
      "reasoning_tokens": 53
    }
  }
}

Authorizations

Authorization
string
header
required

Bearer authentication header of the form Bearer <token>, where <token> is your auth token.

Body

application/json
model
enum<string>
required

The model to use.

Available options:
doubao-seed-2.0-pro,
doubao-seed-2.0-code,
doubao-seed-2.0-lite,
doubao-seed-2.0-mini,
doubao-seed-1-8-251228,
doubao-seed-1-6-flash-250828,
doubao-seed-1-6-251015,
doubao-seed-1-6-lite-251015,
doubao-seed-1-6-vision-250815,
glm-4.7
Example:

"doubao-seed-1-6-251015"

messages
object[]
required

Conversation messages. Each message has role and content.

Content array item types:

  • text: {"type": "text", "text": "..."}
  • image_url: {"type": "image_url", "image_url": {"url": "https://..."}}
  • video_url: {"type": "video_url", "video_url": {"url": "https://...", "fps": 2}}
Minimum array length: 1
Example:
[
{
"role": "user",
"content": [
{
"type": "image_url",
"image_url": {
"url": "https://ark-project.tos-cn-beijing.volces.com/doc_image/ark_demo_img_1.png"
}
},
{
"type": "text",
"text": "What is in this image?"
}
]
}
]
max_tokens
integer

Maximum number of tokens to generate.

Required range: x >= 1
Example:

1024

temperature
number
default:1

Sampling temperature.

Required range: 0 <= x <= 2
Example:

1

top_p
number

Nucleus sampling parameter.

Required range: 0 <= x <= 1
stream
boolean
default:false

Whether to stream via SSE.

stop
string[]

Up to 4 stop sequences.

Response

Chat completion created successfully

id
string
Example:

"chatcmpl-abc123"

object
string
Example:

"chat.completion"

created
integer
Example:

1774236644

model
string
Example:

"doubao-seed-1-6-251015"

choices
object[]
usage
object