Create Voice

curl --request POST \
  --url https://api.navtalk.ai/api/open/v1/voice/{provider}/add \
  --header 'Content-Type: multipart/form-data' \
  --header 'license: <api-key>' \
  --form providerId=b92a28fb2ea737457c7f13ba554759c0 \
  --form 'voiceName=My Custom Voice' \
  --form file='@example-file' \
  --form language=zh \
  --form 'description=Custom cloned voice for my application'

import requests

url = "https://api.navtalk.ai/api/open/v1/voice/{provider}/add"

files = { "file": ("example-file", open("example-file", "rb")) }
payload = {
    "providerId": "b92a28fb2ea737457c7f13ba554759c0",
    "voiceName": "My Custom Voice",
    "language": "zh",
    "description": "Custom cloned voice for my application"
}
headers = {"license": "<api-key>"}

response = requests.post(url, data=payload, files=files, headers=headers)

print(response.text)

const form = new FormData();
form.append('providerId', 'b92a28fb2ea737457c7f13ba554759c0');
form.append('voiceName', 'My Custom Voice');
form.append('file', '<string>');
form.append('language', 'zh');
form.append('description', 'Custom cloned voice for my application');

const options = {method: 'POST', headers: {license: '<api-key>'}};

options.body = form;

fetch('https://api.navtalk.ai/api/open/v1/voice/{provider}/add', 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.navtalk.ai/api/open/v1/voice/{provider}/add",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => "-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"providerId\"\r\n\r\nb92a28fb2ea737457c7f13ba554759c0\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"voiceName\"\r\n\r\nMy Custom Voice\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"file\"; filename=\"example-file\"\r\nContent-Type: application/octet-stream\r\n\r\n<string>\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"language\"\r\n\r\nzh\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"description\"\r\n\r\nCustom cloned voice for my application\r\n-----011000010111000001101001--",
  CURLOPT_HTTPHEADER => [
    "Content-Type: multipart/form-data",
    "license: <api-key>"
  ],
]);

$response = curl_exec($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.navtalk.ai/api/open/v1/voice/{provider}/add"

	payload := strings.NewReader("-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"providerId\"\r\n\r\nb92a28fb2ea737457c7f13ba554759c0\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"voiceName\"\r\n\r\nMy Custom Voice\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"file\"; filename=\"example-file\"\r\nContent-Type: application/octet-stream\r\n\r\n<string>\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"language\"\r\n\r\nzh\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"description\"\r\n\r\nCustom cloned voice for my application\r\n-----011000010111000001101001--")

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

	req.Header.Add("license", "<api-key>")

	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.navtalk.ai/api/open/v1/voice/{provider}/add")
  .header("license", "<api-key>")
  .body("-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"providerId\"\r\n\r\nb92a28fb2ea737457c7f13ba554759c0\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"voiceName\"\r\n\r\nMy Custom Voice\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"file\"; filename=\"example-file\"\r\nContent-Type: application/octet-stream\r\n\r\n<string>\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"language\"\r\n\r\nzh\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"description\"\r\n\r\nCustom cloned voice for my application\r\n-----011000010111000001101001--")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.navtalk.ai/api/open/v1/voice/{provider}/add")

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

request = Net::HTTP::Post.new(url)
request["license"] = '<api-key>'
request.body = "-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"providerId\"\r\n\r\nb92a28fb2ea737457c7f13ba554759c0\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"voiceName\"\r\n\r\nMy Custom Voice\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"file\"; filename=\"example-file\"\r\nContent-Type: application/octet-stream\r\n\r\n<string>\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"language\"\r\n\r\nzh\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"description\"\r\n\r\nCustom cloned voice for my application\r\n-----011000010111000001101001--"

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

{
  "code": 200,
  "message": "SUCCESS",
  "data": {
    "voice": "J8K3LmN9PqR5StU7VwX1",
    "name": "My Custom Voice",
    "description": "Custom voice created via API"
  }
}

Voice

Create Voice

Create a new custom voice clone using either ElevenLabs or Cartesia provider.

Supported Providers:

elevenlabs: ElevenLabs Instant Voice Cloning (IVC)
cartesia: Cartesia Voice Cloning

Supported Languages

The language parameter accepts the following language codes (supported by both providers):

Code	Language	Code	Language	Code	Language
`en`	English	`zh`	Chinese	`ja`	Japanese
`ko`	Korean	`fr`	French	`de`	German
`es`	Spanish	`pt`	Portuguese	`hi`	Hindi
`it`	Italian	`nl`	Dutch	`pl`	Polish
`ru`	Russian	`sv`	Swedish	`tr`	Turkish
`tl`	Tagalog	`bg`	Bulgarian	`ro`	Romanian
`ar`	Arabic	`cs`	Czech	`el`	Greek
`fi`	Finnish	`hr`	Croatian	`ms`	Malay
`sk`	Slovak	`da`	Danish	`ta`	Tamil
`uk`	Ukrainian	`hu`	Hungarian	`no`	Norwegian
`vi`	Vietnamese	`bn`	Bengali	`th`	Thai
`he`	Hebrew	`ka`	Georgian	`id`	Indonesian
`te`	Telugu	`gu`	Gujarati	`kn`	Kannada
`ml`	Malayalam	`mr`	Marathi	`pa`	Punjabi

Note: If language is not specified, the system will auto-detect the language from the audio file.

Audio Requirements

Minimum Duration:

30 seconds minimum (recommended: 60-120 seconds for best quality)
Shorter audio will result in error response

Supported Formats:

MP3 (audio/mpeg)
WAV (audio/wav)

Quality Guidelines:

Sample rate: 44.1 kHz recommended
Bit depth: 16-bit
Content: Clear speech, single speaker
Background: Minimal or no background noise
Background noise removal is automatically enabled (ElevenLabs)

Next Steps

After creating a voice:

Use the returned voice ID when creating avatars
The voice may take a few moments to generate preview
Voice is immediately available for text-to-speech synthesis

POST

api

open

voice

{provider}

add

Create Voice

curl --request POST \
  --url https://api.navtalk.ai/api/open/v1/voice/{provider}/add \
  --header 'Content-Type: multipart/form-data' \
  --header 'license: <api-key>' \
  --form providerId=b92a28fb2ea737457c7f13ba554759c0 \
  --form 'voiceName=My Custom Voice' \
  --form file='@example-file' \
  --form language=zh \
  --form 'description=Custom cloned voice for my application'

import requests

url = "https://api.navtalk.ai/api/open/v1/voice/{provider}/add"

files = { "file": ("example-file", open("example-file", "rb")) }
payload = {
    "providerId": "b92a28fb2ea737457c7f13ba554759c0",
    "voiceName": "My Custom Voice",
    "language": "zh",
    "description": "Custom cloned voice for my application"
}
headers = {"license": "<api-key>"}

response = requests.post(url, data=payload, files=files, headers=headers)

print(response.text)

const form = new FormData();
form.append('providerId', 'b92a28fb2ea737457c7f13ba554759c0');
form.append('voiceName', 'My Custom Voice');
form.append('file', '<string>');
form.append('language', 'zh');
form.append('description', 'Custom cloned voice for my application');

const options = {method: 'POST', headers: {license: '<api-key>'}};

options.body = form;

fetch('https://api.navtalk.ai/api/open/v1/voice/{provider}/add', 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.navtalk.ai/api/open/v1/voice/{provider}/add",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => "-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"providerId\"\r\n\r\nb92a28fb2ea737457c7f13ba554759c0\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"voiceName\"\r\n\r\nMy Custom Voice\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"file\"; filename=\"example-file\"\r\nContent-Type: application/octet-stream\r\n\r\n<string>\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"language\"\r\n\r\nzh\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"description\"\r\n\r\nCustom cloned voice for my application\r\n-----011000010111000001101001--",
  CURLOPT_HTTPHEADER => [
    "Content-Type: multipart/form-data",
    "license: <api-key>"
  ],
]);

$response = curl_exec($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.navtalk.ai/api/open/v1/voice/{provider}/add"

	payload := strings.NewReader("-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"providerId\"\r\n\r\nb92a28fb2ea737457c7f13ba554759c0\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"voiceName\"\r\n\r\nMy Custom Voice\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"file\"; filename=\"example-file\"\r\nContent-Type: application/octet-stream\r\n\r\n<string>\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"language\"\r\n\r\nzh\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"description\"\r\n\r\nCustom cloned voice for my application\r\n-----011000010111000001101001--")

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

	req.Header.Add("license", "<api-key>")

	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.navtalk.ai/api/open/v1/voice/{provider}/add")
  .header("license", "<api-key>")
  .body("-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"providerId\"\r\n\r\nb92a28fb2ea737457c7f13ba554759c0\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"voiceName\"\r\n\r\nMy Custom Voice\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"file\"; filename=\"example-file\"\r\nContent-Type: application/octet-stream\r\n\r\n<string>\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"language\"\r\n\r\nzh\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"description\"\r\n\r\nCustom cloned voice for my application\r\n-----011000010111000001101001--")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.navtalk.ai/api/open/v1/voice/{provider}/add")

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

request = Net::HTTP::Post.new(url)
request["license"] = '<api-key>'
request.body = "-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"providerId\"\r\n\r\nb92a28fb2ea737457c7f13ba554759c0\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"voiceName\"\r\n\r\nMy Custom Voice\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"file\"; filename=\"example-file\"\r\nContent-Type: application/octet-stream\r\n\r\n<string>\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"language\"\r\n\r\nzh\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"description\"\r\n\r\nCustom cloned voice for my application\r\n-----011000010111000001101001--"

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

{
  "code": 200,
  "message": "SUCCESS",
  "data": {
    "voice": "J8K3LmN9PqR5StU7VwX1",
    "name": "My Custom Voice",
    "description": "Custom voice created via API"
  }
}

Authorizations

license

string

header

required

NavTalk API license key (e.g. sk_navtalk_...)

Path Parameters

provider

enum<string>

required

The voice provider type

Available options:

elevenlabs,

cartesia

Example:

"elevenlabs"

Body

multipart/form-data

providerId

string

required

The provider ID (ElevenLabs or Cartesia)

Example:

"b92a28fb2ea737457c7f13ba554759c0"

voiceName

string

required

Name for the new voice

Example:

"My Custom Voice"

file

required

Audio file (MP3 or WAV, minimum 30 seconds)

language

enum<string>

Optional language code for the voice. Supported by both ElevenLabs and Cartesia. See supported languages list in documentation.

Available options:

en,

zh,

ja,

ko,

fr,

de,

es,

pt,

hi,

it,

nl,

pl,

ru,

sv,

tr,

tl,

bg,

ro,

ar,

cs,

el,

fi,

hr,

ms,

sk,

da,

ta,

uk,

hu,

no,

vi,

bn,

th,

he,

ka,

id,

te,

gu,

kn,

ml,

mr,

pa

Example:

"zh"

description

string

Optional description for the voice. Supported by both ElevenLabs and Cartesia.

Example:

"Custom cloned voice for my application"

Response

Voice created successfully

code

integer

Example:

200

message

string

Example:

"SUCCESS"

data

object

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