On July 23, 2025, 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 .
The flagship variant, Qwen3‑Coder‑480B‑A35B‑Instruct, comprises a 480 billion‑parameter MoE model with 35 billion active parameters, natively supporting context windows up to 256 K tokens and extendable to 1 million tokens via extrapolation techniques. This expansive context length allows the model to maintain coherence over large codebases, documentation, and multi‑file projects without losing track of dependencies.
Model Specifications and Capabilities of Qwen3‑Coder
Key technical highlights include:
: According to Alibaba, Qwen3‑Coder outperforms all existing open‑source coding models on benchmarks such as SWE‑Bench‑Verified and agentic coding evaluations, demonstrating superior accuracy, efficiency, and code quality .