Models / Qwen3.5 4B

Qwen3.5 4B

Name: Qwen3.5 4B
Brand: qwen3.5
Price: 0.02 USD
Availability: InStock

Qwen Tier 1Apache-2.0

Compact 4B model for mobile and embedded deployments. Surprisingly capable for its size.

qwen/qwen3.5-4b

Context Window

262K

Max Output

Providers

Released

2026-02

Capabilities

chatcodestreaming

Pricing by Provider

Provider	Input $/1M	Output $/1M	Latency p50	Latency p95	Status
alibaba	$0.02	$0.06	100ms	250ms

Quick Start

Python

import magicrouter

mr = magicrouter.Client(
    provider_keys={"alibaba": "your-api-key"}
)

response = mr.chat(
    "qwen/qwen3.5-4b",
    "Your prompt here"
)
print(response.choices[0].message.content)

TypeScript

import { MagicRouter } from "magicrouter";

const mr = new MagicRouter({
  providerKeys: { alibaba: "your-api-key" }
});

const response = await mr.chat({
  model: "qwen/qwen3.5-4b",
  messages: [{ role: "user", content: "Your prompt here" }]
});
console.log(response.choices[0].message.content);

cURL

curl https://dashscope-intl.aliyuncs.com/compatible-mode/v1/chat/completions \
  -H "Authorization: Bearer your-api-key" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "qwen-flash",
    "messages": [{"role": "user", "content": "Your prompt here"}]
  }'

Use this model

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