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POST
/
audio
/
speech
Text-to-speech
curl --request POST \
  --url https://api.runcrate.ai/v1/audio/speech \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "model": "qwen/qwen3-tts",
  "input": "<string>",
  "voice": "alloy",
  "response_format": "mp3",
  "speed": 2.125
}
'
import requests

url = "https://api.runcrate.ai/v1/audio/speech"

payload = {
    "model": "qwen/qwen3-tts",
    "input": "<string>",
    "voice": "alloy",
    "response_format": "mp3",
    "speed": 2.125
}
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: 'qwen/qwen3-tts',
    input: '<string>',
    voice: 'alloy',
    response_format: 'mp3',
    speed: 2.125
  })
};

fetch('https://api.runcrate.ai/v1/audio/speech', 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.runcrate.ai/v1/audio/speech",
  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' => 'qwen/qwen3-tts',
    'input' => '<string>',
    'voice' => 'alloy',
    'response_format' => 'mp3',
    'speed' => 2.125
  ]),
  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.runcrate.ai/v1/audio/speech"

	payload := strings.NewReader("{\n  \"model\": \"qwen/qwen3-tts\",\n  \"input\": \"<string>\",\n  \"voice\": \"alloy\",\n  \"response_format\": \"mp3\",\n  \"speed\": 2.125\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.runcrate.ai/v1/audio/speech")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"model\": \"qwen/qwen3-tts\",\n  \"input\": \"<string>\",\n  \"voice\": \"alloy\",\n  \"response_format\": \"mp3\",\n  \"speed\": 2.125\n}")
  .asString();
require 'uri'
require 'net/http'

url = URI("https://api.runcrate.ai/v1/audio/speech")

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\": \"qwen/qwen3-tts\",\n  \"input\": \"<string>\",\n  \"voice\": \"alloy\",\n  \"response_format\": \"mp3\",\n  \"speed\": 2.125\n}"

response = http.request(request)
puts response.read_body
"<string>"
{
  "error": {
    "code": "<string>",
    "message": "<string>",
    "details": {}
  }
}
{
  "error": {
    "code": "<string>",
    "message": "<string>",
    "details": {}
  }
}

Authorizations

Authorization
string
header
required

Use a Runcrate API key with the rc_live_* prefix as the bearer token. Create one at https://www.runcrate.ai/dashboard/api-keys.

Body

application/json
model
string
required
Example:

"qwen/qwen3-tts"

input
string
required
voice
string
Example:

"alloy"

response_format
enum<string>
default:mp3
Available options:
mp3,
wav,
opus,
flac
speed
number
Required range: 0.25 <= x <= 4

Response

Audio binary in the requested format.

The response is of type file.