Chat Completion
curl --request POST \
--url https://www.anyfast.ai/v1/messages \
--header 'Authorization: Bearer <token>' \
--header 'Content-Type: application/json' \
--data '
{
"model": "claude-opus-4-8",
"messages": [
{
"role": "user",
"content": "Hello!"
}
],
"max_tokens": 8192,
"temperature": 1,
"frequency_penalty": 0,
"presence_penalty": 0,
"stream": false,
"stop": "<string>"
}
'import requests
url = "https://www.anyfast.ai/v1/messages"
payload = {
"model": "claude-opus-4-8",
"messages": [
{
"role": "user",
"content": "Hello!"
}
],
"max_tokens": 8192,
"temperature": 1,
"frequency_penalty": 0,
"presence_penalty": 0,
"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: 'claude-opus-4-8',
messages: [{role: 'user', content: 'Hello!'}],
max_tokens: 8192,
temperature: 1,
frequency_penalty: 0,
presence_penalty: 0,
stream: false,
stop: '<string>'
})
};
fetch('https://www.anyfast.ai/v1/messages', 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/messages",
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' => 'claude-opus-4-8',
'messages' => [
[
'role' => 'user',
'content' => 'Hello!'
]
],
'max_tokens' => 8192,
'temperature' => 1,
'frequency_penalty' => 0,
'presence_penalty' => 0,
'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/messages"
payload := strings.NewReader("{\n \"model\": \"claude-opus-4-8\",\n \"messages\": [\n {\n \"role\": \"user\",\n \"content\": \"Hello!\"\n }\n ],\n \"max_tokens\": 8192,\n \"temperature\": 1,\n \"frequency_penalty\": 0,\n \"presence_penalty\": 0,\n \"stream\": false,\n \"stop\": \"<string>\"\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/messages")
.header("Authorization", "Bearer <token>")
.header("Content-Type", "application/json")
.body("{\n \"model\": \"claude-opus-4-8\",\n \"messages\": [\n {\n \"role\": \"user\",\n \"content\": \"Hello!\"\n }\n ],\n \"max_tokens\": 8192,\n \"temperature\": 1,\n \"frequency_penalty\": 0,\n \"presence_penalty\": 0,\n \"stream\": false,\n \"stop\": \"<string>\"\n}")
.asString();require 'uri'
require 'net/http'
url = URI("https://www.anyfast.ai/v1/messages")
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\": \"claude-opus-4-8\",\n \"messages\": [\n {\n \"role\": \"user\",\n \"content\": \"Hello!\"\n }\n ],\n \"max_tokens\": 8192,\n \"temperature\": 1,\n \"frequency_penalty\": 0,\n \"presence_penalty\": 0,\n \"stream\": false,\n \"stop\": \"<string>\"\n}"
response = http.request(request)
puts response.read_body{
"id": "chatcmpl-abc123",
"object": "chat.completion",
"created": 123,
"model": "claude-opus-4-8",
"choices": [
{
"index": 123,
"message": {
"role": "assistant",
"content": "Hello! How can I help you today?"
}
}
],
"usage": {
"prompt_tokens": 123,
"completion_tokens": 123,
"total_tokens": 123
}
}{
"error": {
"code": "<string>",
"message": "<string>"
}
}{
"error": {
"code": "<string>",
"message": "<string>"
}
}{
"error": {
"code": "<string>",
"message": "<string>"
}
}Anthropic
claude-opus-4-8
Creates a model response for the given chat conversation.
POST
/
v1
/
messages
Chat Completion
curl --request POST \
--url https://www.anyfast.ai/v1/messages \
--header 'Authorization: Bearer <token>' \
--header 'Content-Type: application/json' \
--data '
{
"model": "claude-opus-4-8",
"messages": [
{
"role": "user",
"content": "Hello!"
}
],
"max_tokens": 8192,
"temperature": 1,
"frequency_penalty": 0,
"presence_penalty": 0,
"stream": false,
"stop": "<string>"
}
'import requests
url = "https://www.anyfast.ai/v1/messages"
payload = {
"model": "claude-opus-4-8",
"messages": [
{
"role": "user",
"content": "Hello!"
}
],
"max_tokens": 8192,
"temperature": 1,
"frequency_penalty": 0,
"presence_penalty": 0,
"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: 'claude-opus-4-8',
messages: [{role: 'user', content: 'Hello!'}],
max_tokens: 8192,
temperature: 1,
frequency_penalty: 0,
presence_penalty: 0,
stream: false,
stop: '<string>'
})
};
fetch('https://www.anyfast.ai/v1/messages', 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/messages",
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' => 'claude-opus-4-8',
'messages' => [
[
'role' => 'user',
'content' => 'Hello!'
]
],
'max_tokens' => 8192,
'temperature' => 1,
'frequency_penalty' => 0,
'presence_penalty' => 0,
'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/messages"
payload := strings.NewReader("{\n \"model\": \"claude-opus-4-8\",\n \"messages\": [\n {\n \"role\": \"user\",\n \"content\": \"Hello!\"\n }\n ],\n \"max_tokens\": 8192,\n \"temperature\": 1,\n \"frequency_penalty\": 0,\n \"presence_penalty\": 0,\n \"stream\": false,\n \"stop\": \"<string>\"\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/messages")
.header("Authorization", "Bearer <token>")
.header("Content-Type", "application/json")
.body("{\n \"model\": \"claude-opus-4-8\",\n \"messages\": [\n {\n \"role\": \"user\",\n \"content\": \"Hello!\"\n }\n ],\n \"max_tokens\": 8192,\n \"temperature\": 1,\n \"frequency_penalty\": 0,\n \"presence_penalty\": 0,\n \"stream\": false,\n \"stop\": \"<string>\"\n}")
.asString();require 'uri'
require 'net/http'
url = URI("https://www.anyfast.ai/v1/messages")
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\": \"claude-opus-4-8\",\n \"messages\": [\n {\n \"role\": \"user\",\n \"content\": \"Hello!\"\n }\n ],\n \"max_tokens\": 8192,\n \"temperature\": 1,\n \"frequency_penalty\": 0,\n \"presence_penalty\": 0,\n \"stream\": false,\n \"stop\": \"<string>\"\n}"
response = http.request(request)
puts response.read_body{
"id": "chatcmpl-abc123",
"object": "chat.completion",
"created": 123,
"model": "claude-opus-4-8",
"choices": [
{
"index": 123,
"message": {
"role": "assistant",
"content": "Hello! How can I help you today?"
}
}
],
"usage": {
"prompt_tokens": 123,
"completion_tokens": 123,
"total_tokens": 123
}
}{
"error": {
"code": "<string>",
"message": "<string>"
}
}{
"error": {
"code": "<string>",
"message": "<string>"
}
}{
"error": {
"code": "<string>",
"message": "<string>"
}
}Authorizations
Bearer authentication header of the form Bearer <token>, where <token> is your auth token.
Body
application/json
Model ID
Available options:
claude-opus-4-8 Example:
"claude-opus-4-8"
A list of messages comprising the conversation so far.
Minimum array length:
1Show child attributes
Show child attributes
Example:
[{ "role": "user", "content": "Hello!" }]
The maximum number of tokens to generate.
Required range:
1 <= x <= 8192Sampling temperature. Higher values make output more random.
Required range:
0 <= x <= 2Example:
1
Penalizes repeated tokens based on their frequency in the text so far.
Required range:
-2 <= x <= 2Penalizes tokens that have already appeared in the text.
Required range:
-2 <= x <= 2If true, stream partial message deltas using SSE.
Sequences where the model will stop generating further tokens.
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