Recently, NetEase Youdao officially launched the "Zi Yue" large model version 4.0, marking that this series of models has fully entered the "multimodal" era. This upgrade not only realizes efficient integration and interaction of text, images, and audio, but also adopts a "completely open source" approach, contributing its core technological assets to the developer community, aiming to reduce the cost and threshold of AI application through an open-source ecosystem.

Core Technological Breakthroughs: Multimodal and Deep Reengineering

The core performance improvements of "Zi Yue 4.0" mainly focus on the following three dimensions:

Multimodal Integration Interaction: The model achieves unified representation and processing of text, visual, and auditory information, supporting natural switching between multiple media types. Whether it is understanding complex instructions or generating multimedia content in real time, the performance has significantly improved.

State-of-the-Art (SOTA) Mathematical Logic: With a parameter scale of 27 billion, Zi Yue 4.0 has reached industry-leading (SOTA) levels in mathematical logic and reasoning tasks, with significant improvements in accuracy and logical rigor.

Reconstructed Translation Engine: As Youdao's core strength, the translation model has undergone deep-level technical reengineering. It maintains efficient inference while achieving a qualitative leap in translation quality, greatly optimizing the fluency of cross-language interactions.

Strategic Open Source: Accelerating AI Adoption Ecosystem

Differing from the previous industry trend of "closed source," NetEase Youdao chose to return core capabilities to the community:

Multimodal Models and TTS Engine: Youdao officially open-sourced its core multimodal processing models and high-performance text-to-speech (TTS) engine. Among them, the TTS engine supports a highly competitive "3-second emotional cloning," which can achieve highly human-like voice customization with only a small amount of audio material, greatly lowering the development threshold for enterprise applications.

Reengineered Chain of Thought (CoT): By reengineering the internal logic of the model's chain of thought, Youdao has significantly reduced the computational resource consumption in the reasoning stage, providing developers with an open-source solution that balances "performance" and "adoption cost."

Strategic Significance: From Product Innovation to Ecosystem Co-Construction

Youdao's complete open sourcing is seen as an important turning point in the domestic large model competition. By releasing the underlying capabilities of "speech + vision + logical reasoning" to developers, Youdao is trying to expand its technological influence beyond the single educational application field into broader general scenarios.