Qwen-Audio 3.1 TTS Flash API

About Qwen-Audio 3.1 TTS Flash

Qwen-Audio 3.1 TTS Flash is the low-latency tier with the widest language coverage of the four Qwen-Audio models. Its 70 voices include 15 English voices, multilingual presets and voices for many other languages, and it reads scripts of up to 10,000 characters.

Call it with the model name alibaba/qwen-audio-3.1-tts-flash/text-to-speech on POST /jobs/createTask, from $0.00285.

Introduction

Qwen-Audio 3.1 TTS Flash brings a 70-voice system catalog to speech projects that need language variety and low latency. Alibaba positions it with the broadest language coverage among the four Qwen-Audio tiers described here.

Its catalog includes four multilingual voices, 15 premium English voices and 51 voices for other languages. A French concierge test used a multilingual preset successfully; choose a target-language script, add direction and poll the synthesis task to hear your own result.

Key features

• Explore voices for languages such as Bulgarian, Dutch, Hungarian, Romanian, Danish, Croatian, Greek and Czech.
• Pick from premium English voices including Emily, Luna, Eric, Luca and Abby.
• Use a multilingual preset for a French reading, as demonstrated in our testing.
• Request tone, persona, pace or dialect in a separate instructions field.

Request parameters

Pricing

Prices are in USD. The API uses a separate USD balance. Website credits cannot be used or transferred to it, and API funds cannot be transferred to website credits. When a task is accepted, we reserve the maximum quoted amount from your API balance. On completion, we charge for actual usage, never more than the hold, and release the remainder. If the task fails, the hold is released.

Send the same request body to POST /jobs/quote to see the estimated and maximum USD charge before running. A quote does not run the task or charge your balance.

Use cases

• Multilingual concierge greetings: Prepare a welcome in the listener's language and audition it with a multilingual voice.
• Radio-style introductions: Give an English introduction a relaxed host persona through a brief performance instruction.
• Regional dialogue trials: Try a Chinese dialect direction and listen to a short sample before producing the remaining lines.

Prompt guide & pro tips

• Start with a greeting in the intended language and review its pronunciation. Example instruction: "Welcome the guest as a relaxed hotel concierge."
• Use a host persona to guide the English delivery. Example instruction: "Read like a late-night radio host, low and unhurried."
• Describe dialect direction clearly and audition a short passage. Example instruction: "Use a conversational Cantonese delivery with a friendly tone."
• Compare one tone change with the same seed, allowing for audio variation. Example instruction: "Keep the wording calm and make the greeting brighter."

API quick start

Call the Qwen-Audio 3.1 TTS Flash 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-. API calls use your separate USD balance.
2. Send the request. POST /jobs/createTask with model alibaba/qwen-audio-3.1-tts-flash/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-audio-3.1-tts-flash/text-to-speech",
  "input": {
    "text": "Welcome back. Your files finished rendering a minute ago and are ready to download.",
    "voice_id": "Emily_v3.1",
    "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.

Qwen-Audio 3.1 TTS Flash API questions

All Qwen-Audio models

Qwen-Audio 3.1 TTS Plus has four flagship voices for high-fidelity narration, at ten times the price per character.

• Qwen-Audio 3.1 TTS Plus APIExpressive narration and brand voices you direct in plain wordsFrom $0.0285 per 1,000 characters
• Qwen-Audio 3.1 TTS Flash APIFast speech in many languages from 70 voicesFrom $0.00285 per 1,000 characters
• Qwen-Audio 3.0 TTS Flash APILow-latency speech for assistants and customer serviceFrom $0.01425 per 1,000 characters
• Qwen-Audio 3.0 TTS Plus APICharacter voices for social and companion apps, 597 presetsFrom $0.019 per 1,000 characters

Other audio APIs

• MiniMax Speech 2.8 HD APIHigh-fidelity speech in 400+ voices with emotion controlFrom $0.12 per 1,000 characters
• Gemini 3.8 Flash-Lite TTS APIFast, lightweight speech in 70 voicesFrom $0.00021 per second
• Grok TTS API71 voices across 20 languages with speech tagsFrom $0.018 per 1,000 characters
• Seed Speech 2.0 API41 voices with tone set in plain languageFrom $0.072 per 1,000 characters

More about Qwen-Audio 3.1 TTS Flash

Try it

Qwen-Audio 3.1 TTS Flash AI Voice Generator onlineCreate audio with Qwen-Audio 3.1 TTS Flash in PopNow

Docs

Qwen-Audio 3.1 TTS Flash model ID and input schema in the API docsPopNow API quickstart: send your first requestWebhooks: get Qwen-Audio 3.1 TTS Flash results without polling