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Model ID: qwen/qwen3.5-9b | Endpoint ID: qwen3-5-9b | Parameters: 9B | Released: 2026-03-10

Overview

Qwen 3.5 9B is a compact yet capable open-source language model designed to balance performance and efficiency. It supports multilingual understanding and generation, long-context inference up to 262,144 tokens, and multimodal input with text and image support while producing text outputs. Compared with larger models, it offers lower serving cost and faster inference, making it well suited for chat assistants, coding help, document summarization, visual understanding, and other real-time AI applications.

Air API Playground

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Deploy with Container

Deploy with AIR Container.

OpenAI Compatible API

Connect with the OpenAI SDK as-is.

Pricing

Supported Features

All features are available through the OpenAI Compatible API.

Key Features

  • Efficient 9B model well suited for cost- and latency-sensitive deployments
  • Strong multilingual understanding and generation
  • Efficient serving through FP8 quantization
  • Compatible with optimized inference runtimes such as vLLM

Use Cases

General Q&A

Handle general-purpose Q&A with efficient reasoning and context understanding.

Code Generation & Assistance

Generate and explain code efficiently for practical development tasks.

Summarization & Analysis

Perform efficient summarization and lightweight analysis of long documents.

Visual Understanding

Understand image inputs and generate text-based explanations or insights.

Parameters

Model Details

Quick Start

1

Get your API key

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2

Run the code

Replace YOUR_API_KEY with your actual key and choose your preferred language (Python, cURL, Node.js).

Tags

open-source conversational 9B reasoning multilingual efficient vision