Word-level timestamps in milliseconds

The fastest, developer-first WhatsApp Audio API.

Convert raw .ogg voice notes into structured JSON with precise word-level timing, clean API responses, and prepaid billing valid for 3, 6, 9, or 12 months depending on the plan.

View plans See the live response

No subscriptions

Plan-based expiry

Simple checkout

Audiex Pro overview

Clean API, predictable billing, production-ready output

Live

Input

Raw WhatsApp .ogg audio, posted as multipart/form-data or uploaded from your app.

Output

Structured JSON with transcript text, segments, and word-level timestamps in milliseconds.

Billing

Pay once, consume credits only when you transcribe, and keep the balance active for the plan's validity window.

Access

Account access stays tied to Google or GitHub sign-in.

Response integrity Milliseconds preserved

text "Let's ship the release after lunch." words 26 aligned tokens with start_ms and end_ms.

Live Playground

Ship against a response your backend can trust.

One request in, structured JSON out. The layout below mirrors the requests and responses your production integration will use.

Request

curl sending a WhatsApp .ogg file

POST /v1/transcribe

cURL request with a WhatsApp .ogg file

curl -X POST "https://audiex.pro/v1/transcribe" \
  -H "Authorization: Bearer sk_live_xxx" \
  -F "file=@whatsapp-voice-note.ogg" \
  -F "language=en"

Authorization

Bearer token

Body

multipart/form-data

Audio

.ogg from WhatsApp

Response

Structured JSON with timestamps in milliseconds

200 OK

{ "text": "Let's ship the release after lunch.", "language": "en", "duration_ms": 12840, "words": [ { "word": "Let's", "start_ms": 220, "end_ms": 460 }, { "word": "ship", "start_ms": 468, "end_ms": 690 }, { "word": "release", "start_ms": 792, "end_ms": 1130 } ] }

Audiex normalizes the output for your app, so your frontend can render transcripts, timing bars, and playback cursors without extra parsing.

Pricing

Prepaid credits built for teams that want predictable spend.

Pay-as-you-go, credits stay valid for 3, 6, 9, or 12 months by plan, and there are no subscriptions hiding in the fine print.

Prepaid only

By purchasing a plan, you agree to our Terms of Service and Refund Policy.

Starter

$7.99

5 hours included

For product validation, small integrations, and early experiments.

Credits valid for 3 months.

Buy Starter

A single endpoint designed to feel boring in the best way.

POST /v1/transcribe accepts multipart audio, checks your token, and returns structured data ready for product use.

Request overview

Headers: Authorization: Bearer sk_live_..., Content-Type is set automatically by multipart/form-data clients.
Body: file (required): .ogg voice note from WhatsApp. language (optional): BCP-47 code such as en, es, pt-BR.
Response: Transcript text, language, duration, segments, and words with timestamps in milliseconds.

Standard errors

Predictable failures

401

Unauthorized

Missing or invalid bearer token.

Auth issue

402

Payment required

No credits left or billing balance is exhausted.

Billing issue

400

Bad request

Empty payload, unreadable audio, or malformed form data.

Payload issue

Example response shape

{
  "text": "Let's ship the release after lunch.",
  "language": "en",
  "duration_ms": 12840,
  "words": [
    { "word": "Let's", "start_ms": 220, "end_ms": 460 },
    { "word": "ship", "start_ms": 468, "end_ms": 690 },
    { "word": "release", "start_ms": 792, "end_ms": 1130 }
  ]
}

Account access

Google and GitHub sign-in will unlock account access.

The product already supports a clean API-first flow, and the social login layer can be enabled without changing the billing model.

1

Connect your identity

Use Google or GitHub once sign-in is enabled on the account portal.

2

Claim trial access

The 10-minute trial stays tied to a real account instead of disposable email addresses.

3

Manage billing and usage

One account keeps credits, invoices, and API access in the same place.

Disposable and temporary emails stay blocked from the public onboarding flow.

Account sign-in

Use Google or GitHub to link your account and keep access in one place.

Terms of Service

Audiex Pro is a prepaid transcription service. Usage is measured against processed audio duration, credits are deducted when a request is accepted and processed, and unused balances expire after 3, 6, 9, or 12 months depending on the plan purchased.

Refund Policy

If the service does not meet your expectations, we offer a 14-day refund for unused balance. Requests are reviewed against account activity and the remaining credit balance.