AI Rate Card

Qwen Audio 3.1 TTS · empiriolabs

Real-time speech synthesis with 19 voices, delivery direction in plain language, inline emotion and sound tags, and audio streamed over SSE or WebSocket.

Base modelAll models on this baseAll models of the providerto the provider

Input, $/1M $0.46

Output, $/1M $3.74

Cache read $0.46

Cache write —

Context —

Max output 60 000

Accepts text

Last checked 04.11.2026 12:00:14 UTC

Source provider's page

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API

OpenAI-compatible API: the official OpenAI SDKs work with this base URL. Replace YOUR_API_KEY with your key from the provider.

API base URL
https://api.empiriolabs.ai/v1
Endpoint
https://api.empiriolabs.ai/v1/audio/speech
Model id
qwen-audio-3-1-tts
curl
curl https://api.empiriolabs.ai/v1/audio/speech \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model": "qwen-audio-3-1-tts", "input": "Hello!", "voice": "alloy"}'
Python
import requests

r = requests.post(
    "https://api.empiriolabs.ai/v1/audio/speech",
    headers={"Authorization": "Bearer YOUR_API_KEY"},
    json={
      "model": "qwen-audio-3-1-tts",
      "input": "Hello!",
      "voice": "alloy"
    },
)
print(r.json())
JavaScript
const r = await fetch("https://api.empiriolabs.ai/v1/audio/speech", {
  method: "POST",
  headers: {Authorization: "Bearer YOUR_API_KEY", "Content-Type": "application/json"},
  body: JSON.stringify({
    "model": "qwen-audio-3-1-tts",
    "input": "Hello!",
    "voice": "alloy"
  }),
});
console.log(await r.blob());
Request (JSON)
{
  "model": "qwen-audio-3-1-tts",
  "input": "Hello!",
  "voice": "alloy"
}
Response (JSON)
audio bytes (audio/mpeg)

The address is taken from the provider's model list; check it against the provider's documentation.

Provider's API documentation

Source: AI Rate Card, https://airatecard.com/en/c/offer%3Aempiriolabs%7Cqwen-audio-3-1-tts, prices checked 2026-11-04; seller's page: https://empiriolabs.ai

Technical details

ID: offer:empiriolabs|qwen-audio-3-1-tts