Speech-to-Text

Create Transcription

curl --request POST \
  --url https://api.electronhub.ai/v1/audio/transcriptions \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: multipart/form-data' \
  --form file='@example-file' \
  --form model=deepgram-nova-3 \
  --form language=auto \
  --form 'prompt=<string>' \
  --form response_format=json \
  --form temperature=0.5 \
  --form 'model_config=<string>' \
  --form smart_format=true \
  --form punctuate=true \
  --form diarize=true \
  --form utterance=true \
  --form numerals=true

import requests

url = "https://api.electronhub.ai/v1/audio/transcriptions"

files = { "file": ("example-file", open("example-file", "rb")) }
payload = {
    "model": "deepgram-nova-3",
    "language": "auto",
    "prompt": "<string>",
    "response_format": "json",
    "temperature": "0.5",
    "model_config": "<string>",
    "smart_format": "true",
    "punctuate": "true",
    "diarize": "true",
    "utterance": "true",
    "numerals": "true"
}
headers = {"Authorization": "Bearer <token>"}

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

print(response.text)

const form = new FormData();
form.append('file', '<string>');
form.append('model', 'deepgram-nova-3');
form.append('language', 'auto');
form.append('prompt', '<string>');
form.append('response_format', 'json');
form.append('temperature', '0.5');
form.append('model_config', '<string>');
form.append('smart_format', 'true');
form.append('punctuate', 'true');
form.append('diarize', 'true');
form.append('utterance', 'true');
form.append('numerals', 'true');

const options = {method: 'POST', headers: {Authorization: 'Bearer <token>'}};

options.body = form;

fetch('https://api.electronhub.ai/v1/audio/transcriptions', 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.electronhub.ai/v1/audio/transcriptions",
  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=\"file\"; filename=\"example-file\"\r\nContent-Type: application/octet-stream\r\n\r\n<string>\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"model\"\r\n\r\ndeepgram-nova-3\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"language\"\r\n\r\nauto\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"prompt\"\r\n\r\n<string>\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"response_format\"\r\n\r\njson\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"temperature\"\r\n\r\n0.5\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"model_config\"\r\n\r\n<string>\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"smart_format\"\r\n\r\ntrue\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"punctuate\"\r\n\r\ntrue\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"diarize\"\r\n\r\ntrue\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"utterance\"\r\n\r\ntrue\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"numerals\"\r\n\r\ntrue\r\n-----011000010111000001101001--",
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "Content-Type: multipart/form-data"
  ],
]);

$response = curl_exec($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.electronhub.ai/v1/audio/transcriptions"

	payload := strings.NewReader("-----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=\"model\"\r\n\r\ndeepgram-nova-3\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"language\"\r\n\r\nauto\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"prompt\"\r\n\r\n<string>\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"response_format\"\r\n\r\njson\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"temperature\"\r\n\r\n0.5\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"model_config\"\r\n\r\n<string>\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"smart_format\"\r\n\r\ntrue\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"punctuate\"\r\n\r\ntrue\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"diarize\"\r\n\r\ntrue\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"utterance\"\r\n\r\ntrue\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"numerals\"\r\n\r\ntrue\r\n-----011000010111000001101001--")

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

	req.Header.Add("Authorization", "Bearer <token>")

	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.electronhub.ai/v1/audio/transcriptions")
  .header("Authorization", "Bearer <token>")
  .body("-----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=\"model\"\r\n\r\ndeepgram-nova-3\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"language\"\r\n\r\nauto\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"prompt\"\r\n\r\n<string>\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"response_format\"\r\n\r\njson\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"temperature\"\r\n\r\n0.5\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"model_config\"\r\n\r\n<string>\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"smart_format\"\r\n\r\ntrue\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"punctuate\"\r\n\r\ntrue\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"diarize\"\r\n\r\ntrue\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"utterance\"\r\n\r\ntrue\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"numerals\"\r\n\r\ntrue\r\n-----011000010111000001101001--")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.electronhub.ai/v1/audio/transcriptions")

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

request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'
request.body = "-----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=\"model\"\r\n\r\ndeepgram-nova-3\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"language\"\r\n\r\nauto\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"prompt\"\r\n\r\n<string>\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"response_format\"\r\n\r\njson\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"temperature\"\r\n\r\n0.5\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"model_config\"\r\n\r\n<string>\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"smart_format\"\r\n\r\ntrue\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"punctuate\"\r\n\r\ntrue\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"diarize\"\r\n\r\ntrue\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"utterance\"\r\n\r\ntrue\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"numerals\"\r\n\r\ntrue\r\n-----011000010111000001101001--"

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

{
  "text": "Hello, how are you?",
  "duration": 123
}

POST

audio

transcriptions

Create Transcription

curl --request POST \
  --url https://api.electronhub.ai/v1/audio/transcriptions \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: multipart/form-data' \
  --form file='@example-file' \
  --form model=deepgram-nova-3 \
  --form language=auto \
  --form 'prompt=<string>' \
  --form response_format=json \
  --form temperature=0.5 \
  --form 'model_config=<string>' \
  --form smart_format=true \
  --form punctuate=true \
  --form diarize=true \
  --form utterance=true \
  --form numerals=true

import requests

url = "https://api.electronhub.ai/v1/audio/transcriptions"

files = { "file": ("example-file", open("example-file", "rb")) }
payload = {
    "model": "deepgram-nova-3",
    "language": "auto",
    "prompt": "<string>",
    "response_format": "json",
    "temperature": "0.5",
    "model_config": "<string>",
    "smart_format": "true",
    "punctuate": "true",
    "diarize": "true",
    "utterance": "true",
    "numerals": "true"
}
headers = {"Authorization": "Bearer <token>"}

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

print(response.text)

const form = new FormData();
form.append('file', '<string>');
form.append('model', 'deepgram-nova-3');
form.append('language', 'auto');
form.append('prompt', '<string>');
form.append('response_format', 'json');
form.append('temperature', '0.5');
form.append('model_config', '<string>');
form.append('smart_format', 'true');
form.append('punctuate', 'true');
form.append('diarize', 'true');
form.append('utterance', 'true');
form.append('numerals', 'true');

const options = {method: 'POST', headers: {Authorization: 'Bearer <token>'}};

options.body = form;

fetch('https://api.electronhub.ai/v1/audio/transcriptions', 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.electronhub.ai/v1/audio/transcriptions",
  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=\"file\"; filename=\"example-file\"\r\nContent-Type: application/octet-stream\r\n\r\n<string>\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"model\"\r\n\r\ndeepgram-nova-3\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"language\"\r\n\r\nauto\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"prompt\"\r\n\r\n<string>\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"response_format\"\r\n\r\njson\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"temperature\"\r\n\r\n0.5\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"model_config\"\r\n\r\n<string>\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"smart_format\"\r\n\r\ntrue\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"punctuate\"\r\n\r\ntrue\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"diarize\"\r\n\r\ntrue\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"utterance\"\r\n\r\ntrue\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"numerals\"\r\n\r\ntrue\r\n-----011000010111000001101001--",
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "Content-Type: multipart/form-data"
  ],
]);

$response = curl_exec($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.electronhub.ai/v1/audio/transcriptions"

	payload := strings.NewReader("-----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=\"model\"\r\n\r\ndeepgram-nova-3\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"language\"\r\n\r\nauto\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"prompt\"\r\n\r\n<string>\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"response_format\"\r\n\r\njson\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"temperature\"\r\n\r\n0.5\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"model_config\"\r\n\r\n<string>\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"smart_format\"\r\n\r\ntrue\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"punctuate\"\r\n\r\ntrue\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"diarize\"\r\n\r\ntrue\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"utterance\"\r\n\r\ntrue\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"numerals\"\r\n\r\ntrue\r\n-----011000010111000001101001--")

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

	req.Header.Add("Authorization", "Bearer <token>")

	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.electronhub.ai/v1/audio/transcriptions")
  .header("Authorization", "Bearer <token>")
  .body("-----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=\"model\"\r\n\r\ndeepgram-nova-3\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"language\"\r\n\r\nauto\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"prompt\"\r\n\r\n<string>\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"response_format\"\r\n\r\njson\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"temperature\"\r\n\r\n0.5\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"model_config\"\r\n\r\n<string>\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"smart_format\"\r\n\r\ntrue\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"punctuate\"\r\n\r\ntrue\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"diarize\"\r\n\r\ntrue\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"utterance\"\r\n\r\ntrue\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"numerals\"\r\n\r\ntrue\r\n-----011000010111000001101001--")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.electronhub.ai/v1/audio/transcriptions")

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

request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'
request.body = "-----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=\"model\"\r\n\r\ndeepgram-nova-3\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"language\"\r\n\r\nauto\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"prompt\"\r\n\r\n<string>\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"response_format\"\r\n\r\njson\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"temperature\"\r\n\r\n0.5\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"model_config\"\r\n\r\n<string>\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"smart_format\"\r\n\r\ntrue\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"punctuate\"\r\n\r\ntrue\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"diarize\"\r\n\r\ntrue\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"utterance\"\r\n\r\ntrue\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"numerals\"\r\n\r\ntrue\r\n-----011000010111000001101001--"

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

{
  "text": "Hello, how are you?",
  "duration": 123
}

POST /audio/transcriptions Upload an audio file and get a text transcript. OpenAI-compatible multipart API.

Limits

Cap	Value
File size	25 MB
Duration	25 minutes
Formats	`flac`, `mp3`, `mp4`, `mpeg`, `mpga`, `m4a`, `ogg`, `wav`, `webm`

Billing is per minute of audio (minimum 1 second). Rates are listed on each model in /v1/models.

Request (multipart)

file

required

Audio file to transcribe

model

string

required

STT model ID (e.g. deepgram-nova-3, whisper-large-v3-turbo)

language

string

ISO-639-1 code, or auto / multi where supported

response_format

string

json (default), text, srt, verbose_json, or vtt

prompt

string

Optional hint text (Whisper-family models)

temperature

number

0–1 (ignored by some engines)

model_config

string

JSON string of engine options (Deepgram: smart_format, punctuate, diarize, …)

You can also pass Deepgram flags as flat form fields: smart_format, punctuate, diarize, utterance, numerals.

Response

Default (json):

{ "text": "Hello, how are you?" }

text / srt / vtt return a plain-text body. verbose_json may include extra fields such as duration.

Models

Usable models (see /v1/models for live pricing):

Model	Notes
`deepgram-nova-3`	Multilingual; upload + streaming engines
`deepgram-nova-2`	Prefer `language=en` (not `auto`)
`deepgram-flux`	Streaming engine; file upload converted server-side
`whisper-large-v3-turbo`	Whisper turbo
`distil-whisper-large-v2`	Distil-Whisper
`grok-stt`	xAI
`assemblyai-universal-streaming`	Use `language=en` (or `es`/`de`/…)
`speechmatics-standard`	Speechmatics
`soniox-stt-rt-v4`	Prefer omitting `language` or use a concrete code

Examples

curl https://api.electronhub.ai/v1/audio/transcriptions \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -F model=deepgram-nova-3 \
  -F language=auto \
  -F [email protected]

from openai import OpenAI

client = OpenAI(
    api_key="YOUR_API_KEY",
    base_url="https://api.electronhub.ai/v1",
)

with open("audio.mp3", "rb") as f:
    result = client.audio.transcriptions.create(
        model="deepgram-nova-3",
        file=f,
        language="auto",
    )

print(result.text)

import OpenAI from "openai";
import fs from "fs";

const openai = new OpenAI({
  apiKey: "YOUR_API_KEY",
  baseURL: "https://api.electronhub.ai/v1",
});

const result = await openai.audio.transcriptions.create({
  model: "deepgram-nova-3",
  file: fs.createReadStream("audio.mp3"),
  language: "auto",
});

console.log(result.text);

Authorizations

Authorization

string

header

required

Enter your API key (starts with 'ek-')

Body

multipart/form-data

file

required

Audio file (flac, mp3, mp4, mpeg, mpga, m4a, ogg, wav, webm). Max 25 MB / 25 minutes.

model

string

required

STT model ID

Example:

"deepgram-nova-3"

language

string

ISO-639-1 code, or auto/multi where supported

Example:

"auto"

prompt

string

Optional hint text (Whisper-family)

response_format

enum<string>

default:json

Available options:

json,

text,

srt,

verbose_json,

vtt

temperature

number

Required range: 0 <= x <= 1

model_config

string

JSON string of engine-specific options (e.g. Deepgram)

smart_format

boolean

punctuate

boolean

diarize

boolean

utterance

boolean

numerals

boolean

Response

Transcription result

text

string

required

Transcribed text

Example:

"Hello, how are you?"

duration

number

Audio duration in seconds (verbose_json)

Text-to-Speech Moderations

Getting Started

API Reference

Guides

Examples

Billing

Limits

Request (multipart)

Response

Models

Examples

Authorizations

Body

Response

​Limits

​Request (multipart)

​Response

​Models

​Examples

Authorizations

Body

Response

Limits

Request (multipart)

Response

Models

Examples