Model Performance & Capabilities - Quen 3 coder rivals Anthropic's Claude family in coding performance, achieving 69.6% on SWEBench verified compared to Claude Sonnet 4's 70.4% [1] - The most powerful variant, Quen 3 coder 480B, features 480 billion parameters with 35 billion active parameters as a mixture of experts model [2][3] - The model supports a native context length of 256k tokens and up to 1 million tokens with extrapolation methods, enhancing its capabilities for tool calling and agentic uses [4] Training Data & Methodology - The model was pre-trained on 7.5 trillion tokens with a 70% code ratio, improving coding abilities while maintaining general and math skills [5] - Quen 2.5 coder was leveraged to clean and rewrite noisy data, significantly improving overall data quality [6] - Code RL training was scaled on a broader set of real-world coding tasks, focusing on diverse coding tasks to unlock the full potential of reinforcement learning [7][8] Tooling & Infrastructure - Quen launched Quen code, a command line tool adapted from Gemini code, enabling agentic and multi-turn execution with planning [2][5][9] - A scalable system was built to run 20,000 independent environments in parallel, leveraging Alibaba cloud's infrastructure for self-play [10] Open Source & Accessibility - The model is hosted on HuggingFace, making it free to use and try out [11]