curl --request POST \
  --url https://api.apimart.ai/v1/audio/speech \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '{
    "model": "gpt-4o-mini-tts",
    "input": "The quick brown fox jumps over the lazy dog.",
    "voice": "alloy",
    "response_format": "opus",
    "speed": 1.0
  }' \
  --output speech.opus

import requests

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

payload = {
    "model": "gpt-4o-mini-tts",
    "input": "The quick brown fox jumps over the lazy dog.",
    "voice": "alloy",
    "response_format": "opus",
    "speed": 1.0
}

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

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

with open("speech.opus", "wb") as f:
    f.write(response.content)

const url = "https://api.apimart.ai/v1/audio/speech";

const payload = {
  model: "gpt-4o-mini-tts",
  input: "The quick brown fox jumps over the lazy dog.",
  voice: "alloy",
  response_format: "opus",
  speed: 1.0
};

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

fetch(url, {
  method: "POST",
  headers: headers,
  body: JSON.stringify(payload)
})
  .then(response => response.blob())
  .then(blob => {
    const url = window.URL.createObjectURL(blob);
    const a = document.createElement('a');
    a.href = url;
    a.download = 'speech.opus';
    a.click();
  })
  .catch(error => console.error('Error:', error));

package main

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

func main() {
    url := "https://api.apimart.ai/v1/audio/speech"

    payload := map[string]interface{}{
        "model":           "gpt-4o-mini-tts",
        "input":           "The quick brown fox jumps over the lazy dog.",
        "voice":           "alloy",
        "response_format": "opus",
        "speed":           1.0,
    }

    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()

    out, _ := os.Create("speech.opus")
    defer out.Close()

    io.Copy(out, resp.Body)
    fmt.Println("Audio saved to speech.opus")
}

import java.io.FileOutputStream;
import java.io.InputStream;
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.apimart.ai/v1/audio/speech";

        String json = """
        {
            "model": "gpt-4o-mini-tts",
            "input": "The quick brown fox jumps over the lazy dog.",
            "voice": "alloy",
            "response_format": "opus",
            "speed": 1.0
        }
        """;

        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(json))
            .build();

        HttpResponse<InputStream> response = client.send(request,
            HttpResponse.BodyHandlers.ofInputStream());

        try (FileOutputStream fos = new FileOutputStream("speech.opus")) {
            response.body().transferTo(fos);
        }
    }
}

<?php

$url = "https://api.apimart.ai/v1/audio/speech";

$data = [
    "model" => "gpt-4o-mini-tts",
    "input" => "The quick brown fox jumps over the lazy dog.",
    "voice" => "alloy",
    "response_format" => "opus",
    "speed" => 1.0
];

$ch = curl_init($url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($data));
curl_setopt($ch, CURLOPT_HTTPHEADER, [
    "Authorization: Bearer <token>",
    "Content-Type: application/json"
]);

$response = curl_exec($ch);
curl_close($ch);

file_put_contents("speech.opus", $response);
?>

require 'net/http'
require 'uri'
require 'json'

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

request = Net::HTTP::Post.new(url)
request["Authorization"] = "Bearer <token>"
request["Content-Type"] = "application/json"

request.body = {
  model: "gpt-4o-mini-tts",
  input: "The quick brown fox jumps over the lazy dog.",
  voice: "alloy",
  response_format: "opus",
  speed: 1.0
}.to_json

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

response = http.request(request)

File.open("speech.opus", "wb") do |file|
  file.write(response.body)
end

import Foundation

let url = URL(string: "https://api.apimart.ai/v1/audio/speech")!

var request = URLRequest(url: url)
request.httpMethod = "POST"
request.setValue("Bearer <token>", forHTTPHeaderField: "Authorization")
request.setValue("application/json", forHTTPHeaderField: "Content-Type")

let payload: [String: Any] = [
    "model": "gpt-4o-mini-tts",
    "input": "The quick brown fox jumps over the lazy dog.",
    "voice": "alloy",
    "response_format": "opus",
    "speed": 1.0
]

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 fileURL = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask)[0]
            .appendingPathComponent("speech.opus")
        try? data.write(to: fileURL)
        print("Audio saved to \(fileURL)")
    }
}

task.resume()

using System;
using System.IO;
using System.Net.Http;
using System.Text;
using System.Text.Json;
using System.Threading.Tasks;

class Program
{
    static async Task Main(string[] args)
    {
        var url = "https://api.apimart.ai/v1/audio/speech";

        var payload = new
        {
            model = "gpt-4o-mini-tts",
            input = "The quick brown fox jumps over the lazy dog.",
            voice = "alloy",
            response_format = "opus",
            speed = 1.0
        };

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

        var json = JsonSerializer.Serialize(payload);
        var content = new StringContent(json, Encoding.UTF8, "application/json");

        var response = await client.PostAsync(url, content);
        var audioBytes = await response.Content.ReadAsByteArrayAsync();

        await File.WriteAllBytesAsync("speech.opus", audioBytes);
        Console.WriteLine("Audio saved to speech.opus");
    }
}

#include <stdio.h>
#include <curl/curl.h>

size_t write_data(void *ptr, size_t size, size_t nmemb, FILE *stream) {
    return fwrite(ptr, size, nmemb, stream);
}

int main(void) {
    CURL *curl;
    CURLcode res;
    struct curl_slist *headers = NULL;

    curl_global_init(CURL_GLOBAL_ALL);
    curl = curl_easy_init();

    if(curl) {
        FILE *fp = fopen("speech.opus", "wb");

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

        const char *json_data = "{\"model\":\"gpt-4o-mini-tts\",\"input\":\"The quick brown fox jumps over the lazy dog.\",\"voice\":\"alloy\",\"response_format\":\"opus\",\"speed\":1.0}";

        curl_easy_setopt(curl, CURLOPT_URL, "https://api.apimart.ai/v1/audio/speech");
        curl_easy_setopt(curl, CURLOPT_HTTPHEADER, headers);
        curl_easy_setopt(curl, CURLOPT_POSTFIELDS, json_data);
        curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, write_data);
        curl_easy_setopt(curl, CURLOPT_WRITEDATA, fp);

        res = curl_easy_perform(curl);

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

        fclose(fp);
        curl_easy_cleanup(curl);
        curl_slist_free_all(headers);
    }

    curl_global_cleanup();
    return 0;
}

#import <Foundation/Foundation.h>

int main(int argc, const char * argv[]) {
    @autoreleasepool {
        NSURL *url = [NSURL URLWithString:@"https://api.apimart.ai/v1/audio/speech"];

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

        NSDictionary *payload = @{
            @"model": @"gpt-4o-mini-tts",
            @"input": @"The quick brown fox jumps over the lazy dog.",
            @"voice": @"alloy",
            @"response_format": @"opus",
            @"speed": @1.0
        };

        NSData *jsonData = [NSJSONSerialization dataWithJSONObject:payload options:0 error:nil];
        [request setHTTPBody:jsonData];

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

                NSString *filePath = [NSHomeDirectory() stringByAppendingPathComponent:@"speech.opus"];
                [data writeToFile:filePath atomically:YES];
                NSLog(@"Audio saved to %@", filePath);
            }];

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

(* Requires cohttp and yojson libraries *)
open Lwt
open Cohttp
open Cohttp_lwt_unix

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

let json_body = `Assoc [
  ("model", `String "gpt-4o-mini-tts");
  ("input", `String "The quick brown fox jumps over the lazy dog.");
  ("voice", `String "alloy");
  ("response_format", `String "opus");
  ("speed", `Float 1.0)
]

let () =
  let body = Cohttp_lwt.Body.of_string (Yojson.Safe.to_string json_body) in
  let headers = Header.init ()
    |> fun h -> Header.add h "Authorization" "Bearer <token>"
    |> fun h -> Header.add h "Content-Type" "application/json"
  in

  Lwt_main.run (
    Client.post ~headers ~body (Uri.of_string url) >>= fun (resp, body) ->
    body |> Cohttp_lwt.Body.to_string >|= fun body_str ->
    let oc = open_out_bin "speech.opus" in
    output_string oc body_str;
    close_out oc;
    print_endline "Audio saved to speech.opus"
  )

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

void main() async {
  final url = Uri.parse('https://api.apimart.ai/v1/audio/speech');

  final payload = {
    'model': 'gpt-4o-mini-tts',
    'input': 'The quick brown fox jumps over the lazy dog.',
    'voice': 'alloy',
    'response_format': 'opus',
    'speed': 1.0
  };

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

  await File('speech.opus').writeAsBytes(response.bodyBytes);
  print('Audio saved to speech.opus');
}

library(httr)

url <- "https://api.apimart.ai/v1/audio/speech"

payload <- list(
  model = "gpt-4o-mini-tts",
  input = "The quick brown fox jumps over the lazy dog.",
  voice = "alloy",
  response_format = "opus",
  speed = 1.0
)

response <- POST(
  url,
  add_headers(
    Authorization = "Bearer <token>",
    `Content-Type` = "application/json"
  ),
  body = payload,
  encode = "json"
)

writeBin(content(response, "raw"), "speech.opus")
cat("Audio saved to speech.opus\n")

Binary audio data stream

{
  "error": {
    "code": 400,
    "message": "Invalid request parameters",
    "type": "invalid_request_error"
  }
}

{
  "error": {
    "code": 401,
    "message": "Authentication failed, please check your API key",
    "type": "authentication_error"
  }
}

{
  "error": {
    "code": 402,
    "message": "Insufficient account balance, please recharge and try again",
    "type": "payment_required"
  }
}

{
  "error": {
    "code": 413,
    "message": "Input text exceeds limit (maximum 4096 characters)",
    "type": "invalid_request_error"
  }
}

{
  "error": {
    "code": 429,
    "message": "Too many requests, please try again later",
    "type": "rate_limit_error"
  }
}

{
  "error": {
    "code": 500,
    "message": "Internal server error, please try again later",
    "type": "server_error"
  }
}

{
  "error": {
    "code": 502,
    "message": "Bad gateway, server temporarily unavailable",
    "type": "bad_gateway"
  }
}