Qwen3 Coder API

alibaba/qwen3-coder-480b-a35b-instruct
Strong coding accuracy focused on software engineering tasks, but with a smaller context window and less emphasis on integration.
Context
256K tokens
Input
$1.95 / 1M tokens
Output
$9.75 / 1M tokens
Released
Sep 9, 2025

Overview

Qwen3-Coder Description

Qwen3-Coder is an advanced AI model specialized in text-to-text coding and programming tasks, designed to support integration and handle complex workflows with a very large context window of 262K tokens.

Specification

Performance Benchmarks

  • Context Window: 262K tokens, allowing for extensive input and long-horizon tasks.
  • Task Focus: Text-to-text transformations, optimized for coding instructions and code generation.
  • Integration Support: Robust integration capabilities for embedding into diverse development and automation environments.

Performance Metrics

The evaluation presents the performance of various AI models across different agentic tasks, including coding, browser navigation, and tool usage. It features models like Open3-Coder, DeepSeek-V3, as well as proprietary ones such as Claude and GPT-4.1.  Performance is measured through established benchmarks like SWE-bench, WebArena, and BECL-v3, reflecting each model’s proficiency in problem-solving, code generation, and interacting with external tools. The scores reveal distinct strengths: some models outperform others in specialized tasks such as coding accuracy or browser-based problem-solving, while a few demonstrate consistently strong, well-rounded capabilities across multiple benchmarks.

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Key Capabilities

  • Advanced Coding: Excels at generating, refactoring, and instructing sophisticated multi-file codebases from textual inputs.
  • High-Context Reasoning: Handles complex sequences and instructions due to the large context, supporting long and multi-step workflows seamlessly.
  • Integration Ready: Designed to support integration frameworks, enabling automation, API usage, and embedding in larger software systems.

API Pricing

  • Input: $1.95 per million tokens
  • Output: $9.75 per million tokens

Code Sample

Comparison with Other Models

  • Vs. Claude 4 Opus: features a Mixture-of-Experts architecture with 480 billion parameters (35 billion active), supporting a massive 256K token context window natively and extendable to 1 million tokens. It excels in agentic coding, tool use, and autonomous workflows, delivering performance comparable to Claude 4 Sonnet in complex development tasks.
  • Vs. Gemini 2.0: Qwen3-Coder emphasizes agentic coding capabilities and dynamic tool and browser automation, while Gemini focuses more on broad knowledge recall and creative generation.
  • Vs. ChatGPT-4.1: Qwen3-Coder is specialized for coding with strong integration of agentic workflows, long-context understanding, and tool automation, whereas ChatGPT-4.1 is more general-purpose with a static knowledge cutoff and less focus on agentic code generation.

Limitations

Although Qwen3-Coder offers exceptional agentic capabilities and long-context handling, its complexity and resource demands are high, and it requires specialized infrastructure for deployment. Like other large agentic coding models, it may still face challenges with extremely novel or ambiguous coding tasks and benefits from integration with human oversight for safety and correctness.

API Integration

Accessible via AI/ML API. Documentation: available here.

Uptime and performance

  • Uptime (24h): 100%
  • Uptime (7d): 100%
  • Availability (24h): 100%
  • Error rate (24h): 0%

Measured on the AI/ML API gateway across live traffic. Figures are medians unless stated. Last updated 2026-10-12.

Use cases

  • Large-Scale Code Generation: Particularly effective for generating and managing significant volumes of code with contextual awareness.
  • Software Development Automation: Facilitates autonomous pull requests, multi-file editing, and codebase refactoring.
  • Complex Instruction Execution: Translates intricate textual commands into executable code and structured programming outputs.

How to use Qwen3 Coder API

Install any OpenAI-compatible SDK, point it at api.aimlapi.com/v1, and set the model to alibaba/qwen3-coder-480b-a35b-instruct.
import requests

r = requests.post(
    "https://api.aimlapi.com/v1/chat/completions",
    headers={"Authorization": "Bearer " + AIMLAPI_KEY},
    json={
      "model": "alibaba/qwen3-coder-480b-a35b-instruct",
      "messages": [
        {
          "role": "user",
          "content": "Hello!"
        }
      ]
    },
)
print(r.json())
const r = await fetch("https://api.aimlapi.com/v1/chat/completions", {
  method: "POST",
  headers: {
    Authorization: `Bearer ${process.env.AIMLAPI_KEY}`,
    "Content-Type": "application/json",
  },
  body: JSON.stringify({
    "model": "alibaba/qwen3-coder-480b-a35b-instruct",
    "messages": [
      {
        "role": "user",
        "content": "Hello!"
      }
    ]
  }),
});
console.log(await r.json());
curl -X POST https://api.aimlapi.com/v1/chat/completions \
  -H "Authorization: Bearer $AIMLAPI_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"alibaba/qwen3-coder-480b-a35b-instruct","messages":[{"role":"user","content":"Hello!"}]}'

OpenAI-compatible — swap the base URL and it works with your existing SDK.

Qwen3 Coder API Pricing

TypePrice
Input
$1.95 / 1M tokens
Output
$9.75 / 1M tokens

Qwen3 Coder Benchmarks

BenchmarkScoreWhat it measuresSourceRetrieved
SWE-bench Verified
66.5%
Resolving verified real GitHub issuesSourceJuly 8, 2026
Intelligence
11.9
Composite score across standardised reasoning, knowledge and problem-solving evaluations, measured independently by Artificial AnalysisSourceSeptember 12, 2026
Math
39.3
Composite score across standardised mathematics evaluations, measured independently by Artificial AnalysisSourceSeptember 12, 2026

Qwen3 Coder vs other models

ModelInputOutputContextBest for
Qwen3 Coder
This page
$1.95 / 1M tokens
$9.75 / 1M tokens
256K tokens
Coding + agents
$6.5 / 1M tokens
$39 / 1M tokens
1M tokens
Reasoning + agents
$2.6 / 1M tokens
$13 / 1M tokens
1M tokens
Balanced coding + agents
$3.9 / 1M tokens
$19.5 / 1M tokens
1M tokens
Long-context, multimodal & agentic workflows
$1.95 / 1M tokens
$11.7 / 1M tokens
1M tokens
Reasoning + agents

Frequently asked questions

Qwen3 Coder has a 262,000 tokens context window and can return up to 65,536 tokens.

Qwen3 Coder takes text as input and returns text.

Use alibaba/qwen3-coder-480b-a35b-instruct as the model id. Requests go to https://api.aimlapi.com/v1/chat/completions.

Qwen3 Coder became available on September 9, 2025.

Qwen3 Coder is priced at input $1.95 / 1M tokens, output $9.75 / 1M tokens.

Yes, Qwen3 Coder can stream responses as they are generated.

Qwen3 Coder was built by Alibaba Cloud.

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