Qwen/v1/ai/qwen/qwen3.5-27b

Qwen 3.5 27B

Access Qwen 3.5 27B through one API key. Dense model for consistent performance.

Alibaba's dense 27B model. All parameters active for consistent performance across tasks.

Full Docs Get API Key

Context Window

262K tokens

Max Output

66K tokens

Input Price

$0.20 / 1M tokens

Output Price

$1.56 / 1M tokens

Try it live

Send a message and see Qwen 3.5 27B respond in real time.

POST /v1/ai/qwen/qwen3.5-27bLive testing

API Key

Message *

Max Tokens

Maximum tokens in the response.

Stream

Real-time token streaming

Hit "Run" to see the response

Strengths

✓Dense model

✓Consistent output

✓262K context

✓Low cost

Quick start

Copy this snippet and start making calls with Qwen 3.5 27B.

const res = await fetch('https://api.yepapi.com/v1/ai/qwen/qwen3.5-27b', {
  method: 'POST',
  headers: {
    'x-api-key': 'YOUR_API_KEY',
    'Content-Type': 'application/json',
  },
  body: JSON.stringify({
    "messages": [
      {
        "role": "user",
        "content": "Explain API gateways in 2 sentences."
      }
    ],
    "maxTokens": 256
  }),
});
const data = await res.json();
console.log(data);

Why use Qwen 3.5 27B through YepAPI?

✓One API key for all models — no separate accounts

✓OpenAI SDK compatible — just change the base URL

✓No monthly minimums — pay per token

✓Switch models with one line of code

✓Full provider passthrough — citations, search results, and all extras included

✓Streaming and non-streaming support on every model

✓Works with Cursor, Claude, LangChain, and any LLM tool

✓Unified billing across all providers

Frequently asked questions

Alibaba's dense 27B model. All parameters active for consistent performance across tasks.

Input tokens cost $0.20 per 1M tokens and output tokens cost $1.56 per 1M tokens through YepAPI. No monthly minimums — you only pay for what you use.

Sign up for a free API key, then send requests to the /v1/ai/qwen/qwen3.5-27b endpoint. YepAPI is OpenAI SDK compatible, so you can use it with any tool that supports OpenAI — just change the base URL.

Qwen 3.5 27B supports a 262K token context window with up to 66K output tokens per request.