Qwen3.5 Omni Plus API

About Qwen3.5 Omni Plus

Flagship omni-modal model for text, image, audio, and video. 3h audio, 1h video, 90+ input and 30+ output languages, 55 voice timbres.

Also known as Qwen3.5 Omni, Alibaba Cloud Qwen3.5 Omni Plus

Qwen3.5 Omni Plus specs

Model ID

qwen3-5-omni-plus

Provider

Alibaba Cloud

Category

Text Generation

Released

Mar 30, 2026

Context window

256K tokens

Max output

32,768 tokens

Input

TextImageVideoAudio

Output

TextAudio

Structured output

JSON Schema

Region

Singapore

Endpoints

POST/v1/chat/completionsPOST/v1/responsesPOST/v1/messagesPOST/v1/audio/speechPOST/v1beta/models/qwen3-5-omni-plus:generateContentPOST/v1/audio/speech:stream

Alternate model IDs

qwen3.5-omni-plus

Qwen3.5 Omni Plus 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 Qwen3.5 Omni Plus API

Qwen3.5 Omni Plus serves the OpenAI-compatible Chat Completions API. Point any OpenAI SDK at https://api.empiriolabs.ai/v1 with your EmpirioLabs API key and use the model id qwen3-5-omni-plus. Get an API key from the EmpirioLabs dashboard.

curl https://api.empiriolabs.ai/v1/chat/completions \
  -H "Authorization: Bearer $EMPIRIOLABS_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "qwen3-5-omni-plus",
    "messages": [
      {"role": "user", "content": "Write a haiku about the ocean."}
    ]
  }'

from openai import OpenAI

client = OpenAI(
    base_url="https://api.empiriolabs.ai/v1",
    api_key="YOUR_EMPIRIOLABS_API_KEY",
)

response = client.chat.completions.create(
    model="qwen3-5-omni-plus",
    messages=[{"role": "user", "content": "Write a haiku about the ocean."}],
)
print(response.choices[0].message.content)

Qwen3.5 Omni Plus API parameters

Request parameters supported by the Qwen3.5 Omni Plus API on EmpirioLabs. Defaults apply when a field is omitted.

Good to know

Audio billing

• Audio is billed at a higher token rate than text/image/video
• When audio output is enabled, output text is NOT charged, only audio tokens

Voice and language

• 55 voice timbres available
• Audio output supports 29 languages, 7 dialects

Per-tool billing (usage.tool_usage)

When this model invokes tools (web search, code interpreter, etc.) inside a single request, the response carries a normalized usage.tool_usage map alongside the token counts. The example below shows the shape, exact field names, units, and which tools appear can vary slightly per provider:

"usage": {
  "prompt_tokens": 123,
  "completion_tokens": 456,
  "cost_usd": 0.0042,
  "tool_usage": {"web_search": 3, "code_interpreter": 1}
}

The tool counts are already factored into cost_usd, they are surfaced for transparency so you can audit per-tool billing. The field is omitted when no tools were invoked.

Qwen3.5 Omni Plus API: common questions

How much does the Qwen3.5 Omni Plus API cost?

On EmpirioLabs, Qwen3.5 Omni Plus is billed pay as you go. The live rate card on this page always matches what the API charges.

What is the context window of Qwen3.5 Omni Plus?

Qwen3.5 Omni Plus supports a 256K-token context window with up to 32,768 output tokens per response.

Is the Qwen3.5 Omni Plus API OpenAI-compatible?

Yes. Qwen3.5 Omni Plus serves the OpenAI-compatible Chat Completions API, so existing OpenAI SDKs work by pointing base_url at https://api.empiriolabs.ai/v1 and setting the model id to qwen3-5-omni-plus.

Can I try Qwen3.5 Omni Plus in the browser before integrating?

Yes. The EmpirioLabs playground runs Qwen3.5 Omni Plus in the browser with the same parameters the API exposes, so you can test prompts before writing code.

How do I get a Qwen3.5 Omni Plus 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.