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qwen3.5

The Qwen3.5 series 397B-A17B native vision-language model is built on a hybrid architecture that integrates a linear attention mechanism with a sparse mixture-of-experts model, achieving higher inference efficiency. It delivers state-of-the-art performance comparable to leading-edge models across a wide range of tasks, including language understanding, logical reasoning, code generation, agent-based tasks, image understanding, video understanding, and graphical user interface (GUI) interactions. With its robust code-generation and agent capabilities, the model exhibits strong generalization across diverse agent.

👁Vision🧠Reasoning🔧Tool calling
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Specifications

Context window256K tokens
Max output66K tokens
API typechat
AddedJul 31, 2025
Model IDalibaba/qwen3.5
Data retentionNo
Used for trainingNo
Provider location🇸🇬 Singapore
Privacy policyAlibaba Cloud Privacy Policy →

Benchmarks

Benchmarks haven't been published yet for this exact variant.

Some variants (region-specific deployments, highspeed tiers) share benchmarks with their base model — check the base model page or the Alibaba Cloud models overview.

Pricing

Input / 1M
$0.60
Output / 1M
$3.60
Cache write
—
Cache read
—
Estimated cost
100K input + 10K output$0.0960
1M input + 100K output$0.96
10M input + 1M output$9.60

Requesty charges exactly what the upstream provider charges — no markup, no per-request fees. Prompt caching and smart routing can reduce effective cost by 30-80%.

Quickstart

Drop-in compatible with the OpenAI SDK. Change the base URL, swap in your Requesty API key, and set the model to alibaba/qwen3.5.

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from openai import OpenAI

client = OpenAI(
    api_key="YOUR_REQUESTY_API_KEY",
    base_url="https://router.requesty.ai/v1",
)

response = client.chat.completions.create(
    model="alibaba/qwen3.5",
    messages=[
        {"role": "user", "content": "Explain quantum computing in one paragraph."},
    ],
)

print(response.choices[0].message.content)

Other Alibaba Cloud models

qwen3-max
262K ctx$0.86/1M
qwen3-30b-a3b-instruct-2507
131K ctx$0.20/1M
qwen3-coder-plus
1.0M ctx$1.00/1M
qwen3-coder-flash
1.0M ctx$0.30/1M
qwen-turbo
1M ctx$0.05/1M
qwen-max
33K ctx$1.60/1M

Frequently asked questions

How much does qwen3.5 cost?
qwen3.5 is priced at $0.60 per million input tokens and $3.60 per million output tokens when accessed via Requesty. Requesty charges exactly what the upstream provider charges — we don't add markup.
What is the context window of qwen3.5?
qwen3.5 has a context window of 256K tokens, with a maximum output of 66K tokens per response. That's roughly 341 words of input you can fit in a single prompt.
What can qwen3.5 do?
qwen3.5 supports vision input, tool calling, extended reasoning. You can call it through any OpenAI-compatible client by pointing base_url to Requesty.
How do I use qwen3.5 with the OpenAI SDK?
Install the OpenAI SDK, set base_url to "https://router.requesty.ai/v1", set your API key to your Requesty key, and set the model to "alibaba/qwen3.5". The Quickstart above shows Python, JavaScript and cURL snippets.

Access qwen3.5 through Requesty

One API key, 400+ models, OpenAI-compatible. No markup on provider prices, automatic failover, and smart caching built-in.

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