Qwen3 TTS API

Introduction

What it returns

One MP3 file per task, 24 kHz mono. There are no word timings or subtitles in the result.

Choosing a voice

voice_id takes one of nine preset voices and defaults to Serena:

• Serena — warm, gentle young female
• Vivian — bright, slightly edgy young female
• Uncle_Fu — seasoned male with a low, mellow timbre
• Ryan — dynamic male with strong rhythmic drive
• Aiden — sunny American male
• Ono_Anna — playful Japanese female
• Sohee — warm, emotional Korean female
• Dylan — youthful male speaking Beijing dialect
• Eric — lively male speaking Sichuan (Chengdu) dialect

Directing the delivery

instructions takes a sentence or two of plain language about how to read: tone, emotion, pace. It shapes the performance and is not spoken. Speed and pitch sliders are not exposed; ask for them in instructions.

Language

language defaults to auto, which detects the language from the script. Set zh, en, de, fr, es, it, pt, ru, ja or ko when a short or mixed script is read in the wrong one.

Request parameters

Pricing

Prices are in credits, the same credits you use on the website (1 credit = $0.01). The hold is taken when the task is accepted and settled to the actual charge when it finishes; failed tasks are refunded.

Each task is rounded up to whole credits, so one run at the lowest tier costs 11 credits per 1,000 characters ($0.11).

For an exact number before you run, send the same body to POST /jobs/quote.

API quick start

Call the Qwen3 TTS API in three steps

1. Create an API key. Sign in to PopNow and create a key in the API console. Keys start with sk-popnow- and use the same credits as the website.
2. Send the request. POST /jobs/createTask with model alibaba/qwen-3-tts/text-to-speech and an input object that follows the parameter table. The response returns a task ID straight away.
3. Get the result. Poll GET /jobs/recordInfo with the task ID, or pass a callBackUrl and we post the result to it. Download the output links when the task succeeds.

# 1. Create the task. Keep the Idempotency-Key if you retry after a network error.
export IDEMPOTENCY_KEY="$(uuidgen)"
curl -X POST https://api.popnow.ai/api/v1/jobs/createTask \
  -H "Authorization: Bearer $POPNOW_API_KEY" \
  -H "Content-Type: application/json" \
  -H "Idempotency-Key: $IDEMPOTENCY_KEY" \
  -d '{
  "model": "alibaba/qwen-3-tts/text-to-speech",
  "input": {
    "text": "Welcome back. Your files finished rendering a minute ago and are ready to download.",
    "voice_id": "Serena",
    "language": "auto"
  }
}'

# 2. Copy data.taskId from the response, then poll until state is succeeded, failed, canceled or expired.
TASK_ID="TASK_ID_FROM_RESPONSE"
curl "https://api.popnow.ai/api/v1/jobs/recordInfo?taskId=$TASK_ID" \
  -H "Authorization: Bearer $POPNOW_API_KEY"

Replace the prompt and any links with your own. The API tab has the response, polling and callback reference.

Qwen3 TTS API questions

Other audio APIs

• Gemini 3.8 Flash TTS APIExpressive speech that acts out cues like [laughing]From 0.05 credits per second
• MiniMax Speech 2.8 HD APIHigh-fidelity speech in 400+ voices with emotion controlFrom 18 credits per 1,000 characters
• Gemini 3.8 Flash-Lite TTS APIFast, lightweight speech in 30 voicesFrom 0.03 credits per second
• Grok TTS API71 voices across 20 languages with speech tagsFrom 3 credits per 1,000 characters
• Seed Speech 2.0 API41 voices with tone set in plain languageFrom 11 credits per 1,000 characters
• MiniMax Speech 2.8 Turbo APIFast speech in 400+ voices with emotion controlFrom 11 credits per 1,000 characters

More about Qwen3 TTS

Try it

Qwen3 TTS AI Voice Generator onlineCreate audio with Qwen3 TTS in PopNow

Docs

Qwen3 TTS model ID and input schema in the API docsPopNow API quickstart: your first request in five minutesWebhooks: get Qwen3 TTS results without polling