Speech in, speech out, over one socket, with separate text and audio token rates and per-turn billing.
Alibaba CloudAudio Generation256K contextSingaporeProprietary EndpointNewSpeech in, speech out, over one socket, with separate text and audio token rates and per-turn billing.
Session is configured with session.update events over the socket rather than request parameters. Text and audio tokens bill at separate rates.
Also known as Alibaba Cloud Qwen3.5 Omni Flash Realtime
qwen3-5-omni-flash-realtime/v1/realtimeqwen3.5-omni-flash-realtimealibaba/qwen3-5-omni-flash-realtimeLive pay-as-you-go rates from the EmpirioLabs catalog. You are billed only for what you use, with no monthly minimum.
Qwen3.5 Omni Flash Realtime holds a live conversation over a WebSocket at wss://api.empiriolabs.ai/v1/realtime?model=qwen3-5-omni-flash-realtime, not over the HTTP endpoints. Connect with the model id qwen3-5-omni-flash-realtime and send your EmpirioLabs API key as an Authorization: Bearer header on the handshake. Audio travels both ways as base64 16-bit PCM. A browser cannot set headers on a WebSocket, so open this connection from your server and relay audio to the browser over your own socket. Get an API key from the EmpirioLabs dashboard.
import asyncio, json, os, websockets
async def main():
async with websockets.connect(
"wss://api.empiriolabs.ai/v1/realtime?model=qwen3-5-omni-flash-realtime",
additional_headers=[
("Authorization", f"Bearer {os.environ['EMPIRIOLABS_API_KEY']}"),
],
max_size=None,
) as ws:
print(json.loads(await ws.recv())["type"]) # session.created
await ws.send(json.dumps({
"type": "conversation.item.create",
"item": {
"type": "message",
"role": "user",
"content": [{"type": "input_text", "text": "Say hello."}],
},
}))
await ws.send(json.dumps({"type": "response.create"}))
async for raw in ws:
event = json.loads(raw)
if event["type"] == "response.audio.delta":
... # base64 audio chunk, append to your playback buffer
elif event["type"] == "response.done":
break
asyncio.run(main())Request parameters supported by the Qwen3.5 Omni Flash Realtime API on EmpirioLabs. Defaults apply when a field is omitted.
| Parameter | Type | Default | Range / values | Description |
|---|---|---|---|---|
| voice | enum | Tina | Tina, Serena, Ethan, Dylan, Sunny, Peter, Kiki, Eric | Speaking voice for the session. Set it with session.update before the model produces any audio. |
| instructions | string | - | - | System guidance for how the model should behave and speak during the conversation. |
| modalities | string | ["text","audio"] | - | Which output types the model returns for a turn. Drop "audio" for a text-only reply. |
| input_audio_format | enum | pcm | pcm | Encoding of the audio you append to the input buffer: base64 16-bit PCM. |
| output_audio_format | enum | pcm | pcm | Encoding of the audio the model streams back: base64 16-bit PCM. |
| turn_detection | string | {"type":"server_vad"} | - | Server-side voice activity detection. Decides when you have stopped speaking and the model should reply. Without it the model listens but never answers, so leave it... |
Full-duplex voice over a WebSocket at wss://api.empiriolabs.ai/v1/realtime?model=qwen3-5-omni-flash-realtime, authenticated with the ordinary Authorization Bearer header. Configure the session with session.update over the socket: voice, instructions, modalities, and turn detection. This model's voices differ from the earlier Omni generation, so set one it accepts or leave the default; an unknown voice ends the session rather than returning an error. Text and audio tokens are priced separately, and each completed turn is billed on its own from the usage the model reports.
On EmpirioLabs, Qwen3.5 Omni Flash Realtime is billed pay as you go: Input: audio $9.00 per 1M audio input tokens; Input $1.10 per 1M prompt tokens; Output $6.60 per 1M generated tokens; Output: audio $35.40 per 1M generated audio tokens. The live rate card on this page always matches what the API charges.
Qwen3.5 Omni Flash Realtime supports a 256K-token context window with up to 32,768 output tokens per response.
Qwen3.5 Omni Flash Realtime is served through WEBSOCKET /v1/realtime on api.empiriolabs.ai with standard bearer-token authentication.
Open the EmpirioLabs playground and press Start session to try it in your browser. Qwen3.5 Omni Flash Realtime runs over a WebSocket rather than a request and response, so to build with it start from the realtime voice quickstart. Connect from your server with your EmpirioLabs API key and the model id qwen3-5-omni-flash-realtime, then stream audio in both directions.
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.
Check out our pricing or reach out if you want your own model deployed on our stack.
