Qwen3.5-35B-A3B

Text

Small open-weight Qwen3.5 vision MoE (3B active); 256K context; OpenAI-compatible API

Input $0.25 / 1M tokens | Output $2.00 / 1M tokens Qwen3.5-35B-A3B API reference →

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runapi.ai

# Base URL
https://runapi.ai

# Endpoints
POST /v1/chat/completions
POST /v1/responses
POST /v1/messages
POST /v1beta/models/qwen3.5-35b-a3b:generateContent
POST /v1beta/models/qwen3.5-35b-a3b:streamGenerateContent

curl https://runapi.ai/v1/chat/completions \
  -H "Authorization: Bearer $RUNAPI_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "model": "qwen3.5-35b-a3b",
  "messages": [
    {
      "role": "user",
      "content": "Read this screenshot of a failing dashboard, explain what the error message means, and suggest the code change that would fix it."
    }
  ]
}'

from openai import OpenAI

client = OpenAI(
    base_url="https://runapi.ai/v1",
    api_key="your-runapi-key"
)

response = client.chat.completions.create(
    model="qwen3.5-35b-a3b",
    messages=[{"role": "user", "content": "Read this screenshot of a failing dashboard, explain what the error message means, and suggest the code change that would fix it."}]
)

import OpenAI from "openai";

const client = new OpenAI({
  baseURL: "https://runapi.ai/v1",
  apiKey: "your-runapi-key"
});

const response = await client.chat.completions.create({
  model: "qwen3.5-35b-a3b",
  messages: [{ role: "user", content: "Read this screenshot of a failing dashboard, explain what the error message means, and suggest the code change that would fix it." }]
});

https://runapi.ai 5 endpoints

9 versions available

OVERVIEW

What Qwen3.5-35B-A3B is built for

Qwen3.5-35B-A3B is the small Mixture-of-Experts model of Alibaba's Qwen3.5 Medium series, released with open weights under Apache 2.0 on February 24, 2026. It is a native vision-language model with hybrid linear attention, 35B total parameters, and 3B active per token. Alibaba rates its overall performance as comparable to Qwen3.5-27B.

It is a hybrid model with thinking on by default, a 262,144-token context window, and up to 65,536 output tokens. Alibaba lists function calling and structured outputs as supported.

On RunAPI, call qwen3.5-35b-a3b through the OpenAI-compatible Chat Completions endpoint (/v1/chat/completions) with an OpenAI SDK pointed at https://runapi.ai/v1. Images go in image_url parts inside messages[].content[].

Model ID

qwen3.5-35b-a3b

Released

February 24, 2026

Architecture

MoE, 35B total / 3B active, Apache 2.0 weights

Context window

262,144 tokens

Max output

65,536 tokens

Thinking

Hybrid, on by default

Endpoint on RunAPI

OpenAI Chat Completions, text and image input

Playground

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Specifications

Provider	Alibaba
Model ID	qwen3.5-35b-a3b
Modality	Text
Task types	Synchronous
API endpoint	/v1/chat/completions
	/v1/responses

	/v1/messages
	/v1beta/models/qwen3.5-35b-a3b:generateContent
	/v1beta/models/qwen3.5-35b-a3b:streamGenerateContent
Billing unit	1K tokens
Catalog status	Operational

HOW IT WORKS

Use This Model in 3 Steps

Get Your Key

Sign up for free and create an API key for qwen3.5-35b-a3b from the dashboard.
Send a Request

POST to /v1/chat/completions with the qwen3.5-35b-a3b model slug and your parameters.
Get Results

Read the completed qwen3.5-35b-a3b response directly from the endpoint.

What this model offers

Endpoint coverage

Exposes 1 public endpoint(s): chat_completion.

Usage-based billing

Metered by 1K tokens with no subscription requirement.

Qwen3.5-35B-A3B Pricing

Endpoint

Price

chat_completion

Input: $0.25 / 1M tokens Output: $2.00 / 1M tokens

API REFERENCE

Endpoint Specification

Endpoint: POST /v1/chat/completions
Model ID: qwen3.5-35b-a3b
Task Types: chat_completion

Request parameters

No request parameters are published for this endpoint.

USE CASES

Customer support

Answer customer questions from a private knowledge base, reducing ticket volume.

Document analysis

Draft contract summaries and flag key clauses for attorney review.

Code generation

Auto-generate unit tests, code reviews, and refactoring suggestions in CI.

Trusted by developers

API Calls / Day

100.0%

Success Rate

5.7s

Avg Generation

Verified customer feedback is not available for this model yet.

FAQ

Frequently asked questions about Qwen3.5-35B-A3B

What does A3B mean in Qwen3.5-35B-A3B?

It means 3B active parameters. The model has 35B parameters in total, and its Mixture-of-Experts router uses 3B of them for each token.

Should I use Qwen3.5-35B-A3B or Qwen3.6-35B-A3B?

Qwen3.6-35B-A3B directly succeeds this model with the same 35B / 3B active size. Alibaba reports large gains for the 3.6 model in agentic coding, math and code reasoning, spatial intelligence, and object detection.

Does Qwen3.5-35B-A3B support function calling?

Yes. Alibaba lists function calling and structured outputs as supported. On RunAPI, send tools in the OpenAI format on Chat Completions and read tool_calls from the response.

Can Qwen3.5-35B-A3B read images?

Yes. It is a native vision-language model. Send image_url parts with the text in a Chat Completions request. Alibaba also lists video input; video requests are not verified on RunAPI.

How do I select qwen3.5-35b-a3b?

Pass the model ID shown in the quickstart.

What's the rate limit on this variant?

Per-key rate limits scale with your usage tier. The pricing page shows current limits. If you need higher throughput, contact support to discuss tier upgrades.

Can I switch variants later?

Yes. Variant is a parameter in the request. Switch by changing the model ID — no code changes, no re-authentication, no separate billing setup. All variants share the same API key and request shape.

Does it stream?

Where streaming is available, RunAPI streams end-to-end. LLM models support token-level streaming. Media models use async task polling or webhook callbacks for result delivery.

Where do I report quality issues?

Open an issue on the public GitHub repo or email support at [email protected]. Include the task ID and model ID so the team can investigate the specific generation.

Do I need a separate provider account?

No. Your RunAPI API key is enough to access this variant and every other model in the catalog. You do not need accounts with the underlying provider.

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