---
title: "Transcribe audio files using the OpenAI SDK-compatible endpoint. Supports all AllModels STT providers. Accepts WAV, MP3, FLAC, MP4/M4A, OGG, and WebM."
method: POST
path: "/allmodels/oai/audio/transcriptions"
tags: ["AllModels"]
---

# Transcribe audio files using the OpenAI SDK-compatible endpoint. Supports all AllModels STT providers. Accepts WAV, MP3, FLAC, MP4/M4A, OGG, and WebM.

`POST /allmodels/oai/audio/transcriptions`

## Request

- Base URL: `https://api.orthogonal.com/mpp`
- URL: `https://api.orthogonal.com/mpp/allmodels/oai/audio/transcriptions`
- Auth: none declared
- TypeScript: <https://skmtc.dev/orthogonal/apis/orthogonal-api-marketplace/docs/allmodels/oai/audio/transcriptions/post.ts> (a function with typed inputs; its response is checked against the schema)

## Request body

- object
  - `file` string, required: Audio file to transcribe (binary upload)
  - `model` string, required: Model ID, e.g. 'deepgram/nova-3', 'assemblyai/universal-3'
  - `language` string: Language code, e.g. 'en'
  - `response_format` string: Response format: json, text, srt, verbose_json, vtt
  - `timestamp_granularities[]` string[]: Timestamp granularity: word, segment

## Response `200`

Successful response

## Other responses

- `402`: Payment Required (x402 / MPP / np)

## Changes

- **2026-11-08** `857e915717f4`: 1 breaking
  - added required request body
- **2026-09-22** `f80c0aab1f7c`: 1 info
  - endpoint added

[Operation history](https://skmtc.dev/orthogonal/apis/orthogonal-api-marketplace/changes/allmodels/oai/audio/transcriptions/post.md)

---

[API](https://skmtc.dev/orthogonal/apis/orthogonal-api-marketplace.md) - [All operations](https://skmtc.dev/orthogonal/apis/orthogonal-api-marketplace/llms.txt) - [OpenAPI document](https://skmtc.dev/orthogonal/apis/orthogonal-api-marketplace/revisions/fc2e1d26c8eb?raw)