Qwen Audio 3.1 ASR API

About Qwen Audio 3.1 ASR

Speech-to-text for short clips and long recordings, with sentence segments, word timestamps, and multilingual and Chinese dialect recognition.

Upload a file or pass an audio URL. The language is detected automatically.

Also known as Qwen Audio ASR, Alibaba Cloud Qwen Audio 3.1 ASR

Qwen Audio 3.1 ASR specs

Model ID

qwen-audio-3-1-asr

Author

Alibaba Cloud

Category

Transcription

Released

Sep 10, 2026

Input

Audio

Output

Text

Region

Singapore

Endpoints

POST/v1/audio/transcriptions

Alternate model IDs

qwen-audio-3.1-asralibaba/qwen-audio-3-1-asr

Qwen Audio 3.1 ASR API pricing

Live pay-as-you-go rates from the EmpirioLabs catalog. You are billed only for what you use, with no monthly minimum.

How to call the Qwen Audio 3.1 ASR API

Qwen Audio 3.1 ASR runs through POST /v1/audio/transcriptions. The request returns a job_id right away; poll GET /v1/jobs/{job_id} until the job completes and read the output URLs from the result. Get an API key from the EmpirioLabs dashboard.

curl https://api.empiriolabs.ai/v1/audio/transcriptions \
  -H "Authorization: Bearer $EMPIRIOLABS_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "qwen-audio-3-1-asr",
    "audio_url": "https://example.com/meeting-recording.mp3"
  }'

curl https://api.empiriolabs.ai/v1/jobs/JOB_ID \
  -H "Authorization: Bearer $EMPIRIOLABS_API_KEY"

import requests

response = requests.post(
    "https://api.empiriolabs.ai/v1/audio/transcriptions",
    headers={"Authorization": "Bearer YOUR_EMPIRIOLABS_API_KEY"},
    json={
        "model": "qwen-audio-3-1-asr",
        "audio_url": "https://example.com/meeting-recording.mp3",
    },
)
job = response.json()

# Generation runs as an async job. Poll until it completes.
import time
while True:
    status = requests.get(
        f"https://api.empiriolabs.ai/v1/jobs/{job['job_id']}",
        headers={"Authorization": "Bearer YOUR_EMPIRIOLABS_API_KEY"},
    ).json()
    if status.get("status") in ("completed", "failed"):
        print(status)
        break
    time.sleep(5)

Good to know

Sending audio

Send a file as multipart file, or JSON with audio_url or audio_base64, in common audio formats. Short clips and long recordings are both accepted.

Getting the result

The request returns a job_id and a poll_url right away. Poll GET /v1/jobs/<job-id> until status is completed. Short clips finish in seconds; long recordings take longer.

What comes back

The result of the completed job holds the full transcript as text, sentence segments with start and end times, and word timestamps. The language is detected automatically, including Chinese dialects.

Billing

Input and output tokens are priced per 1M, and each request is billed from the usage the model reports.

Qwen Audio 3.1 ASR API: common questions

How much does the Qwen Audio 3.1 ASR API cost?

On EmpirioLabs, Qwen Audio 3.1 ASR is billed pay as you go: Input $0.30 per 1M audio input tokens; Output $0.94 per 1M generated tokens. The live rate card on this page always matches what the API charges.

Which endpoint does Qwen Audio 3.1 ASR use?

Qwen Audio 3.1 ASR is served through POST /v1/audio/transcriptions on api.empiriolabs.ai with standard bearer-token authentication.

Can I try Qwen Audio 3.1 ASR in the browser before integrating?

Yes. The EmpirioLabs playground runs Qwen Audio 3.1 ASR in the browser with the same parameters the API exposes, so you can test prompts before writing code.

How do I get a Qwen Audio 3.1 ASR API key?

Create an EmpirioLabs account, then generate a key under API Keys in the dashboard. Billing is pay-as-you-go credits, so you only pay for the requests you make.