curl --request POST \
  --url https://api.modellix.ai/api/v1/alibaba/qwen-audio-3.0-tts-plus \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "text": "There is a large garden behind my house.",
  "voice": "longanlingxin"
}
'

{
  "code": 0,
  "message": "success",
  "data": {
    "status": "pending",
    "task_id": "task-qwen-audio-3-tts-plus-001",
    "model_id": "alibaba/qwen-audio-3.0-tts-plus",
    "get_result": {
      "method": "GET",
      "url": "https://api.modellix.ai/api/v1/tasks/task-qwen-audio-3-tts-plus-001"
    }
  }
}

{
  "code": 400,
  "message": "Invalid parameters: voice is required for alibaba/cosyvoice-v3-plus"
}

{
  "code": 401,
  "message": "Authentication failed: invalid API key"
}

{
  "code": 429,
  "message": "Rate limit exceeded: 100 requests per minute, retry after 60 seconds"
}

{
  "code": 500,
  "message": "Internal server error"
}

Qwen-Audio 3.0 TTS Plus

[Core Function] Qwen-Audio 3.0 TTS Plus is Alibaba’s high-quality Qwen-Audio text-to-speech model on the same SpeechSynthesizer endpoint family as CosyVoice. [Strengths] Natural speech synthesis with voice, format, sample-rate, prosody, SSML, instruction, language_hint, and AIGC watermark controls; system voices include longanlingxin and longanlufeng (see the Qwen-Audio-TTS voice list). [Best For] Premium narration, brand voiceovers, multilingual product audio, and quality-sensitive batch TTS when Qwen-Audio voices are preferred. [Limitations] Does not expose hot_fix or Markdown filtering. Do NOT use for real-time streaming or word-level timestamps. Do NOT mix Flash-only voices (e.g. longanhuan_v3.6) with Plus. [Routing] Choose Plus when speech quality is the priority. Choose qwen-audio-3.0-tts-flash when lower latency matters more.

POST

alibaba

qwen-audio-3.0-tts-plus

curl --request POST \
  --url https://api.modellix.ai/api/v1/alibaba/qwen-audio-3.0-tts-plus \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "text": "There is a large garden behind my house.",
  "voice": "longanlingxin"
}
'

{
  "code": 0,
  "message": "success",
  "data": {
    "status": "pending",
    "task_id": "task-qwen-audio-3-tts-plus-001",
    "model_id": "alibaba/qwen-audio-3.0-tts-plus",
    "get_result": {
      "method": "GET",
      "url": "https://api.modellix.ai/api/v1/tasks/task-qwen-audio-3-tts-plus-001"
    }
  }
}

{
  "code": 400,
  "message": "Invalid parameters: voice is required for alibaba/cosyvoice-v3-plus"
}

{
  "code": 401,
  "message": "Authentication failed: invalid API key"
}

{
  "code": 429,
  "message": "Rate limit exceeded: 100 requests per minute, retry after 60 seconds"
}

{
  "code": 500,
  "message": "Internal server error"
}

Authorizations

Authorization

string

header

required

Modellix API Key. Format: Bearer <your_api_key>

Body

application/json

Shared Qwen-Audio 3.0 TTS request fields. Submit as an async task; poll GET /api/v1/tasks/{task_id} for the audio URL in result.resources. Qwen-Audio TTS does not expose hot_fix or Markdown filtering.

text

string

required

Text to synthesize. Required. Max 20,000 Unicode characters. Supports plain text and SSML (set enable_ssml to true) per Alibaba documentation.

Required string length: 1 - 20000

Example:

"There is a large garden behind my house."

voice

string

required

Voice ID for qwen-audio-3.0-tts-plus only. Use a Plus system voice (e.g. longanlingxin, longanlufeng) or a Plus base/cloned voice ID from the official Qwen-Audio-TTS voice list: https://help.aliyun.com/zh/model-studio/qwen-audio-tts-voice-list . Do not mix Flash system voices with Plus.

Required string length: 1 - 256

Example:

"longanlingxin"

format

enum<string>

default:mp3

Audio encoding format. Default mp3.

Available options:

mp3,

pcm,

wav,

opus

Example:

"mp3"

sample_rate

enum<integer>

default:22050

Audio sample rate in Hz. Default 22050.

Available options:

8000,

16000,

22050,

24000,

44100,

48000

Example:

24000

volume

integer

default:50

Output volume. Default 50. Range 0 (silent) to 100 (maximum).

Required range: 0 <= x <= 100

Example:

50

rate

number

default:1

Speech rate multiplier. Default 1.0. Range 0.5 (slow) to 2.0 (fast).

Required range: 0.5 <= x <= 2

Example:

1

pitch

number

default:1

Pitch multiplier. Default 1.0. Range 0.5 (lower) to 2.0 (higher).

Required range: 0.5 <= x <= 2

Example:

1

bit_rate

integer

Audio bit rate in kbps. Optional. Range 6 to 510. Only supported when format is opus; do not use for mp3, pcm, or wav.

Required range: 6 <= x <= 510

Example:

32

instruction

string

Optional speaking-style instruction. Enforced weighted length ≤100 (CJK ideographs / Han count as 2; other characters count as 1).

Example:

"Speak in a friendly customer-service tone."

language_hint

enum<string>

Target language hint for pronunciation (numbers, symbols, minor languages).

Available options:

zh,

en,

fr,

de,

ja,

ko,

ru,

pt,

th,

id,

vi,

es,

it,

ms,

fil,

ar

Example:

"en"

seed

integer

default:0

Random seed for reproducible synthesis when text, voice, and other parameters are identical. Default 0. Range 0 to 65535.

Required range: 0 <= x <= 65535

Example:

0

enable_ssml

boolean

default:false

Whether to parse text as SSML. Default false. When true, text must follow Alibaba SpeechSynthesizer SSML rules.

Example:

false

enable_aigc_tag

boolean

default:false

Embed AIGC invisible watermark into wav/mp3/opus output. Supported on Qwen-Audio 3.0 TTS Plus and Flash.

aigc_propagator

string

AIGC ContentPropagator. Only effective when enable_aigc_tag is true.

aigc_propagate_id

string

AIGC PropagateID. Only effective when enable_aigc_tag is true.

Response

Task submitted successfully. Poll GET /api/v1/tasks/{task_id} until the task completes; synthesized audio is returned on the task result.

Response object for asynchronous task submission.

code

integer

required

Response code, 0 indicates success

Example:

0

message

string

required

Response message

Example:

"success"

data

object

required

Task submission details. Poll GET /api/v1/tasks/{task_id} until status is success; audio appears in result.resources.

Show child attributes

Cosyvoice v3 flash Qwen audio 3 0 tts flash

Model API

Common API

File API

Qwen-Audio 3.0 TTS Plus

Authorizations

Body

Response