# NetEase Youdao Open-Sources Multimodal Large Model Confucius4

- Category: Flash (快讯)
- Published: 2026-05-22T11:56:00.000Z
- Source date: 2026-05-22
- HTML: https://www.88z.ai/en/news/flash-20260522-51a4e7a85a1dce0b
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NetEase Youdao's AI team has open-sourced Confucius4, a multimodal reasoning model based on the Qwen3.5-27B architecture. Designed for advanced mathematical reasoning, it supports mixed text-image inputs and is compatible with the Qwen ecosystem.

## At a glance

- Built on Qwen3.5-27B architecture for advanced math reasoning, reducing reasoning chain length by 43.2%
- Supports mixed text-image inputs and Chinese scenario optimization, achieving SOTA performance while compatible with the Qwen ecosystem

## The update

NetEase Youdao's AI team has officially open-sourced Confucius4, a multimodal reasoning model. Built on the Qwen3.5-27B architecture, it is specifically optimized for advanced mathematical reasoning tasks. The model employs a training strategy combining iterative supervised fine-tuning with reinforcement learning, alongside refined chain-of-thought optimization. Benchmark results indicate that Confucius4 achieves state-of-the-art performance for its size on tests such as Math-Hard-500, while reducing reasoning chain length by 43.2%. Furthermore, the model is directionally optimized for Chinese user scenarios, supports mixed text-image inputs, and is fully compatible with the Qwen ecosystem, offering developers an efficient multimodal reasoning solution.

## Sources

- [Confucius4](https://www.88z.ai/flash/cite/flash-20260522-51a4e7a85a1dce0b) (2026-05-22)

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