curl --request POST \
  --url https://api.highwayapi.ai/v4beta/txt2speech \
  --header 'Authorization: <authorization>' \
  --header 'Content-Type: <content-type>' \
  --data '
{
  "text": "<string>",
  "temperature": 123,
  "top_p": 123,
  "references": {
    "text": "<string>"
  },
  "reference_id": {},
  "prosody": {
    "speed": 123,
    "volume": 123
  },
  "chunk_length": 123,
  "normalize": true,
  "format": {},
  "sample_rate": {},
  "mp3_bitrate": {},
  "opus_bitrate": {},
  "latency": {}
}
'

import requests

url = "https://api.highwayapi.ai/v4beta/txt2speech"

payload = {
    "text": "<string>",
    "temperature": 123,
    "top_p": 123,
    "references": { "text": "<string>" },
    "reference_id": {},
    "prosody": {
        "speed": 123,
        "volume": 123
    },
    "chunk_length": 123,
    "normalize": True,
    "format": {},
    "sample_rate": {},
    "mp3_bitrate": {},
    "opus_bitrate": {},
    "latency": {}
}
headers = {
    "Content-Type": "<content-type>",
    "Authorization": "<authorization>"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {'Content-Type': '<content-type>', Authorization: '<authorization>'},
  body: JSON.stringify({
    text: '<string>',
    temperature: 123,
    top_p: 123,
    references: {text: '<string>'},
    reference_id: {},
    prosody: {speed: 123, volume: 123},
    chunk_length: 123,
    normalize: true,
    format: {},
    sample_rate: {},
    mp3_bitrate: {},
    opus_bitrate: {},
    latency: {}
  })
};

fetch('https://api.highwayapi.ai/v4beta/txt2speech', 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.highwayapi.ai/v4beta/txt2speech",
  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([
    'text' => '<string>',
    'temperature' => 123,
    'top_p' => 123,
    'references' => [
        'text' => '<string>'
    ],
    'reference_id' => [
        
    ],
    'prosody' => [
        'speed' => 123,
        'volume' => 123
    ],
    'chunk_length' => 123,
    'normalize' => true,
    'format' => [
        
    ],
    'sample_rate' => [
        
    ],
    'mp3_bitrate' => [
        
    ],
    'opus_bitrate' => [
        
    ],
    'latency' => [
        
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: <authorization>",
    "Content-Type: <content-type>"
  ],
]);

$response = curl_exec($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.highwayapi.ai/v4beta/txt2speech"

	payload := strings.NewReader("{\n  \"text\": \"<string>\",\n  \"temperature\": 123,\n  \"top_p\": 123,\n  \"references\": {\n    \"text\": \"<string>\"\n  },\n  \"reference_id\": {},\n  \"prosody\": {\n    \"speed\": 123,\n    \"volume\": 123\n  },\n  \"chunk_length\": 123,\n  \"normalize\": true,\n  \"format\": {},\n  \"sample_rate\": {},\n  \"mp3_bitrate\": {},\n  \"opus_bitrate\": {},\n  \"latency\": {}\n}")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("Content-Type", "<content-type>")
	req.Header.Add("Authorization", "<authorization>")

	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.highwayapi.ai/v4beta/txt2speech")
  .header("Content-Type", "<content-type>")
  .header("Authorization", "<authorization>")
  .body("{\n  \"text\": \"<string>\",\n  \"temperature\": 123,\n  \"top_p\": 123,\n  \"references\": {\n    \"text\": \"<string>\"\n  },\n  \"reference_id\": {},\n  \"prosody\": {\n    \"speed\": 123,\n    \"volume\": 123\n  },\n  \"chunk_length\": 123,\n  \"normalize\": true,\n  \"format\": {},\n  \"sample_rate\": {},\n  \"mp3_bitrate\": {},\n  \"opus_bitrate\": {},\n  \"latency\": {}\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.highwayapi.ai/v4beta/txt2speech")

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

request = Net::HTTP::Post.new(url)
request["Content-Type"] = '<content-type>'
request["Authorization"] = '<authorization>'
request.body = "{\n  \"text\": \"<string>\",\n  \"temperature\": 123,\n  \"top_p\": 123,\n  \"references\": {\n    \"text\": \"<string>\"\n  },\n  \"reference_id\": {},\n  \"prosody\": {\n    \"speed\": 123,\n    \"volume\": 123\n  },\n  \"chunk_length\": 123,\n  \"normalize\": true,\n  \"format\": {},\n  \"sample_rate\": {},\n  \"mp3_bitrate\": {},\n  \"opus_bitrate\": {},\n  \"latency\": {}\n}"

response = http.request(request)
puts response.read_body