---
title: "High-fidelity speech synthesis. Model fixed to speech-2.8-hd. Returns a downloadable audio URL (valid 24h) in data.audio; stream fixed to false."
method: POST
path: "/minimax-08853f/v1/t2a/speech-2.8-hd"
tags: ["MiniMax"]
---

# High-fidelity speech synthesis. Model fixed to speech-2.8-hd. Returns a downloadable audio URL (valid 24h) in data.audio; stream fixed to false.

`POST /minimax-08853f/v1/t2a/speech-2.8-hd`

## Request

- Base URL: `https://api.orthogonal.com/mpp`
- URL: `https://api.orthogonal.com/mpp/minimax-08853f/v1/t2a/speech-2.8-hd`
- Auth: none declared
- TypeScript: <https://skmtc.dev/orthogonal/apis/orthogonal-api-marketplace/docs/minimax-08853f/v1/t2a/speech-2.8-hd/post.ts> (a function with typed inputs; its response is checked against the schema)

## Request body

- object
  - `text` string, required: Text to synthesize, under 10,000 characters. Supports <#x#> pause markers and interjection tags like (laughs).
  - `voice_setting` object: {voice_id, speed [0.5,2], vol (0,10], pitch [-12,12], emotion}. Use a system voice_id such as English_expressive_narrator.
  - `audio_setting` object: {sample_rate, bitrate, format (mp3|pcm|flac|wav|opus...), channel}.
  - `language_boost` string: Language hint, e.g. English, Chinese, or auto.
  - `pronunciation_dict` object: Custom pronunciation overrides.
  - `voice_modify` object: Voice effects (pitch, intensity, timbre, sound_effects).
  - `subtitle_enable` boolean: Return a subtitle file URL.

## Response `200`

Successful response

## Other responses

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

## Changes

- **2026-11-08** `857e915717f4`: 1 breaking
  - added required request body
- **2026-10-11** `f8378892a608`: 1 info
  - endpoint added

[Operation history](https://skmtc.dev/orthogonal/apis/orthogonal-api-marketplace/changes/minimax-08853f/v1/t2a/speech-2.8-hd/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/f3e9572f3f12?raw)