---
title: "Azure Speech Proxy Route"
method: POST
path: "/azure_speech/{endpoint}"
tags: ["llm_passthrough"]
---

# Azure Speech Proxy Route

`POST /azure_speech/{endpoint}`

## Request

- Base URL: `https://api.sea-lion.ai` (the document declares no server; this is the origin it was published from)
- URL: `https://api.sea-lion.ai/azure_speech/{endpoint}`
- Auth: API key in header `x-litellm-api-key`

Pass-through for the Azure AI Speech REST APIs (speech to text), e.g.
`POST /azure_speech/speech/recognition/conversation/cognitiveservices/v1?language=en-US`
with the raw audio as the body, or `POST /azure_speech/speechtotext/v3.2/transcriptions`.

The body is forwarded byte for byte and the proxy injects its own
`Ocp-Apim-Subscription-Key`; the caller's `Authorization` header is the LiteLLM key
and is never forwarded.

[Docs](https://docs.litellm.ai/docs/pass_through/azure_speech)

## Path parameters

- `endpoint` string, required

## Response `200`

Successful Response

- unknown

## Other responses

- `422`: Validation Error

## Changes

- **2026-10-21** `f2fb14eab3f5`: 1 info
  - endpoint added

[Operation history](https://skmtc.dev/sea-lion/apis/litellm-api/changes/azure_speech/:endpoint/post.md)

---

[API](https://skmtc.dev/sea-lion/apis/litellm-api.md) · [All operations](https://skmtc.dev/sea-lion/apis/litellm-api/llms.txt) · [OpenAPI document](https://skmtc.dev/sea-lion/apis/litellm-api/revisions/5efb88d3bf35?raw)