> ## Documentation Index
> Fetch the complete documentation index at: https://docs.myrouter.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# MiniMax Speech-2.6-hd Async Text-to-Speech

This API supports asynchronous text-to-speech generation with a maximum of 1 million characters per request. The complete generated audio result can be retrieved asynchronously. Supports 100+ system voices and cloned voices; supports customization of pitch, speed, volume, bitrate, sample rate, and output format.

After submitting a long text speech synthesis request, please note that the returned URL is valid for 24 hours from the time it is generated. Please download the content in time.

<Tip>Suitable for long text speech generation such as entire books. Task queuing may take a long time. For short sentence generation, voice chat, and online social scenarios, it is recommended to use [Synchronous Text-to-Speech](/docs/models/reference-minimax-speech-2.6-hd).</Tip>

## Request Headers

<ParamField header="Content-Type" type="string" required={true}>
  Enum: `application/json`
</ParamField>

<ParamField header="Authorization" type="string" required={true}>
  Bearer authentication format: Bearer \{\{API Key}}.
</ParamField>

## Request Body

<ParamField body="text" type="string" required={true}>
  The text to be synthesized, limited to a maximum of 50,000 characters.
</ParamField>

<ParamField body="voice_setting" type="object" required={true}>
  <Expandable title="properties">
    <ParamField body="speed" type="number" default={1.0}>
      Range \[0.5, 2], Default: 1.0

      The speech rate of the generated audio. Optional; higher values result in faster speech.
    </ParamField>

    <ParamField body="vol" type="number" default={1.0}>
      Range (0, 10], Default: 1.0

      The volume of the generated audio. Optional; higher values result in louder volume.
    </ParamField>

    <ParamField body="pitch" type="number" default={0}>
      Range \[-12, 12], Default: 0

      The pitch of the generated audio. Optional (0 outputs the original voice; value must be an integer).
    </ParamField>

    <ParamField body="voice_id" type="string">
      The voice ID for the request.

      Supports both system voices (ID) and cloned voices (ID). The system voice IDs are as follows:

      * Youthful Male Voice: `male-qn-qingse`
      * Elite Young Male Voice: `male-qn-jingying`
      * Assertive Young Male Voice: `male-qn-badao`
      * College Male Voice: `male-qn-daxuesheng`
      * Young Female Voice: `female-shaonv`
      * Mature Female Voice (Confident): `female-yujie`
      * Mature Female Voice: `female-chengshu`
      * Sweet Female Voice: `female-tianmei`
      * Male Presenter: `presenter_male`
      * Female Presenter: `presenter_female`
      * Male Audiobook 1: `audiobook_male_1`
      * Male Audiobook 2: `audiobook_male_2`
      * Female Audiobook 1: `audiobook_female_1`
      * Female Audiobook 2: `audiobook_female_2`
      * Youthful Male Voice-beta: `male-qn-qingse-jingpin`
      * Elite Young Male Voice-beta: `male-qn-jingying-jingpin`
      * Assertive Young Male Voice-beta: `male-qn-badao-jingpin`
      * College Male Voice-beta: `male-qn-daxuesheng-jingpin`
      * Young Female Voice-beta: `female-shaonv-jingpin`
      * Mature Female Voice (Confident)-beta: `female-yujie-jingpin`
      * Mature Female Voice-beta: `female-chengshu-jingpin`
      * Sweet Female Voice-beta: `female-tianmei-jingpin`
      * Smart Boy: `clever_boy`
      * Cute Boy: `cute_boy`
      * Adorable Girl: `lovely_girl`
      * Cartoon Pig: `cartoon_pig`
      * Cute Little Brother: `bingjiao_didi`
      * Handsome Boyfriend: `junlang_nanyou`
      * Innocent Junior: `chunzhen_xuedi`
      * Cool Senior: `lengdan_xiongzhang`
      * Assertive Young Master: `badao_shaoye`
      * Sweet Ling: `tianxin_xiaoling`
      * Playful Girl: `qiaopi_mengmei`
      * Charming Lady: `wumei_yujie`
      * Cute Junior Girl: `diadia_xuemei`
      * Elegant Senior Girl: `danya_xuejie`
      * Santa Claus: `Santa_Claus`
      * Grinch: `Grinch`
      * Rudolph: `Rudolph`
      * Arnold: `Arnold`
      * Charming Santa: `Charming_Santa`
      * Charming Lady: `Charming_Lady`
      * Sweet Girl: `Sweet_Girl`
      * Cute Elf: `Cute_Elf`
      * Attractive Girl: `Attractive_Girl`
      * Serene Woman: `Serene_Woman`
    </ParamField>

    <ParamField body="emotion" type="string">
      Controls the emotion of the synthesized speech.

      Currently supports 7 emotions: happy, sad, angry, fearful, disgusted, surprised, neutral.

      Possible values: `["happy", "sad", "angry", "fearful", "disgusted", "surprised", "neutral"]`
    </ParamField>

    <ParamField body="text_normalization" type="bool" default="false">
      This parameter enables English text normalization, which can improve performance in number reading scenarios but slightly increases latency. If not provided, defaults to false.
    </ParamField>
  </Expandable>
</ParamField>

<ParamField body="audio_setting" type="object">
  <Expandable title="properties">
    <ParamField body="sample_rate" type="number" default={32000}>
      Possible values: \[8000, 16000, 22050, 24000, 32000, 44100]

      The sample rate of the generated audio. Optional, Default: 32000.
    </ParamField>

    <ParamField body="bitrate" type="number" default={128000}>
      Possible values: \[32000, 64000, 128000, 256000]

      The bitrate of the generated audio. Optional, Default: 128000. This parameter only applies to mp3 format audio.
    </ParamField>

    <ParamField body="format" type="string" default="mp3">
      The format of the generated audio. Default: mp3. Options: `mp3`, `pcm`, `flac`, `wav`. wav is only supported in non-streaming output.
    </ParamField>

    <ParamField body="channel" type="number" default={1}>
      The number of audio channels. Default 1: mono. Options:

      1: Mono

      2: Stereo
    </ParamField>
  </Expandable>
</ParamField>

<ParamField body="pronunciation_dict" type="object">
  <Expandable title="properties">
    <ParamField body="tone" type="list">
      Replace characters, symbols, and their corresponding pronunciations that require special annotation.

      Replace pronunciation (adjust tone/replace with other character pronunciation), format as follows:

      `["omg/oh my god"]`

      Tones are represented by numbers: 1st tone (high level) is 1, 2nd tone (rising) is 2, 3rd tone (dipping) is 3, 4th tone (falling) is 4, neutral tone is 5.
    </ParamField>
  </Expandable>
</ParamField>

<ParamField body="language_boost" type="string" default="null">
  Enhances recognition of specified minority languages and dialects. When set, it can improve speech performance for the specified language/dialect. If the language type is unclear, you can select "auto" and the model will automatically determine the language type. Supported values:

  `'Chinese', 'Chinese,Yue', 'English', 'Arabic', 'Russian', 'Spanish', 'French', 'Portuguese', 'German', 'Turkish', 'Dutch', 'Ukrainian', 'Vietnamese', 'Indonesian', 'Japanese', 'Italian', 'Korean', 'Thai', 'Polish', 'Romanian', 'Greek', 'Czech', 'Finnish', 'Hindi', 'Bulgarian', 'Danish', 'Hebrew', 'Malay', 'Persian', 'Slovak', 'Swedish', 'Croatian', 'Filipino', 'Hungarian', 'Norwegian', 'Slovenian', 'Catalan', 'Nynorsk', 'Tamil', 'Afrikaans', 'auto'`
</ParamField>

<ParamField body="voice_modify" type="object">
  Voice effect settings. Supported audio formats for this parameter: mp3, wav, flac

  <Expandable title="properties">
    <ParamField body="pitch" type="integer">
      Pitch adjustment (deep/bright), range \[-100, 100]. Values closer to -100 produce a deeper sound; values closer to 100 produce a brighter sound.
    </ParamField>

    <ParamField body="intensity" type="integer">
      Intensity adjustment (powerful/soft), range \[-100, 100]. Values closer to -100 produce a more powerful sound; values closer to 100 produce a softer sound.
    </ParamField>

    <ParamField body="timbre" type="integer">
      Timbre adjustment (rich/crisp), range \[-100, 100]. Values closer to -100 produce a richer sound; values closer to 100 produce a crisper sound.
    </ParamField>

    <ParamField body="sound_effects" type="string">
      Sound effect settings. Only one can be selected at a time. Possible values:

      * `spacious_echo` (Spacious Echo)
      * `auditorium_echo` (Auditorium Broadcast)
      * `lofi_telephone` (Telephone Distortion)
      * `robotic` (Electronic Voice)
    </ParamField>
  </Expandable>
</ParamField>

## Response

<ResponseField name="task_id" type="string" required={true}>
  The task\_id of the async task. Use the task\_id to call the [Get Async Task Result API](/docs/models/reference-get-async-task-result) to retrieve the generated result.
</ResponseField>