The morning of July 23, Alibaba officially launched its new open-source AI programming model - Qwen3-Coder. This model marks a major breakthrough in the Qwen series, adopting a mixture of experts (MoE) architecture with up to 48 billion parameters, of which 3.5 billion are activated. Qwen3-Coder not only stands out among open-source programming models, but its performance is also comparable to the world's top Claude4.

Qwen3-Coder was pre-trained on a dataset containing 7.5TB of data, with 70% of it being code. Its design supports a context length of 256K tokens, and can be extended up to 1M tokens, providing developers with broader adaptability for various programming scenarios. In the later reinforcement learning phase, the model was deeply optimized for programming tasks and agent tasks, significantly enhancing general capabilities, code capabilities, and agent capabilities.

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In multiple evaluations, Qwen3-Coder performed excellently. It surpassed GPT4.1 in the Agent capability evaluation on platforms such as WebArena, and in the SWE-Bench evaluation that tests autonomous planning to solve programming tasks, Qwen3-Coder achieved the best results among open-source models. Its outstanding agent capabilities make it particularly good at handling complex multi-step tasks, capable of autonomously arranging work content and flexibly calling various tools to efficiently solve complex programming tasks.

In addition, Qwen3-Coder greatly reduces the entry barrier for programming, allowing ordinary people to easily realize their programming aspirations. Developers need only a simple instruction to generate complex 3D physics simulations. This not only improves the efficiency of programming work, shortening tasks that previously took hours to just minutes, but also helps enhance multiple intelligent application fields such as web development and AI search.

Qwen3-Coder has been open-sourced on platforms such as ModelScope Community and HuggingFace, allowing global developers to download and use it for free. In addition, it will be integrated into Alibaba's AI programming product Tongyi Lingma and be available through the Alibaba Cloud BaiLian API, making it easier for developers to use. To improve user experience, the Tongyi team also launched a command-line tool called Qwen Code, helping developers better utilize this powerful tool.