Qwen: Qwen3.5 Plus

Name: Qwen3.5 Plus API
Brand: Qwen

stable

Qwen3.5 Plus is available through Everstack's OpenAI-compatible gateway with routing, fallback, retries, and observability.

qwen3.5-plusqwen3.5released Feb 16, 2026

Provider Quick start

Context

tokens

Max output

65.5K

tokens

Input

$0.40

per 1M

Output

$2.40

per 1M

Activity

Daily period usage

Aggregated managed Everstack traffic. Buckets below 5 tenants or 100 requests are withheld.

Providers

ProviderContextInput /MOutput /M

Qwen

1M$0.40$2.40

Pricing

Item	Price	Unit
Input	$0.40	per 1M tokens
Output	$2.40	per 1M tokens

Performance

Reliability

Compare

Compare usage and performance

Place this model beside up to three other catalog models.

Capabilities

Modalities

Input

Output

Details

Model ID: qwen3.5-plus
Family: qwen3.5
Status: stable
Knowledge: -
Released: Feb 16, 2026

Gateway Config

API: v1
Auth: DASHSCOPE_API_KEY
Discovery: static
Provider type: static

Quick Start

index.ts

import Everstack from "@everstack/node";const client = new Everstack({  apiKey: process.env.EVERSTACK_API_KEY!,  baseUrl: "https://{instance}.{region}.everstack.ai",});const completion = await client.chat.completions.create({  model: "@qwen/qwen3.5-plus",  messages: [{ role: "user", content: "Explain vector cache routing." }],});console.log(completion.choices[0]?.message?.content);

Endpoint

Base URL

https://dashscope-intl.aliyuncs.com/compatible-mode/v1

Chat completions

https://dashscope-intl.aliyuncs.com/compatible-mode/v1/chat/completions

Model

qwen3.5-plus

Auth env

DASHSCOPE_API_KEY

Qwen3.5 Plus FAQ

How much does the Qwen3.5 Plus API cost?

Through Qwen, Qwen3.5 Plus costs $0.40 per 1M input tokens and $2.40 per 1M output tokens.

What is the context window of Qwen3.5 Plus?

Qwen3.5 Plus accepts up to 1M tokens of context and returns up to 65.5K output tokens on Qwen.

What can Qwen3.5 Plus do?

Qwen3.5 Plus supports chat, function calling, image input and reasoning. It accepts text, image and video input.

How do I call Qwen3.5 Plus through Everstack?

Point any OpenAI-compatible SDK at your Everstack gateway and set the model to @qwen/qwen3.5-plus. Everstack adds retries, provider fallback, caching, per-tenant budgets and OpenTelemetry traces for every request.