NetEase Youdao Open Source Multimodal Large Model Confucius4

NetEase Youdao AI team has open-sourced Confuciusius4, a multimodal inference model based on the Qwen 3.5-27B architecture, specifically designed for advanced mathematical inference. The model employs iterative SFT+RL training and refined CoT optimization, achieving state-of-the-art (SOTA) performance on benchmarks such as Math-Hard-500, while reducing inference chain length by 43.2%. Confuciusius4 is specifically optimized for Chinese users, supports mixed text and image input, and is compatible with the Qwen ecosystem.