The Qwen3-Coder API is a code generation and completion API based on Alibaba’s Qwen3 language model family, optimized for software development tasks such as writing, understanding, and debugging code across multiple programming languages.
Alibaba Group officially launched Qwen3‑Coder, an open‑source artificial intelligence model tailored for software development and autonomous coding tasks. The announcement positions Qwen3‑Coder as the company’s most advanced coding model to date, boasting unprecedented scale and performance capabilities designed to meet the complex needs of modern software engineering teams .
Key Features
Strongest Agent Coding Capability: Using the Mixture‑of‑Experts architecture with 480 billion parameters, it actually activates about 35 billion parameters and has the strongest Agentic Coding capability among open source models
natively supports 256K tokens, and the upper limit can be expanded to 1M tokens, which is suitable for processing the entire code repository or complex Pull Request processes