Alibaba Qwen AI leadership departure has drawn attention across the global AI community after one of the project’s most visible technical leaders stepped down shortly after a major model launch.

Junyang Lin, a central technical leader on Alibaba’s Qwen team, announced on X that he was “stepping down” from the project. Lin did not provide details about the decision. According to his LinkedIn profile, he joined Alibaba in July 2019 and became part of the Qwen team in April 2023.

The timing of the move surprised many observers because it came just one day after Alibaba introduced a new generation of models.

Alibaba Qwen AI Leadership Departure Comes After Qwen 3.5 Launch

The Alibaba Qwen AI leadership departure happened shortly after the company unveiled its Qwen 3.5 small models open-weight China AI lineup.

The new series includes four models ranging from 0.8 billion to 9 billion parameters. Alibaba described the systems as native multimodal models designed for various applications, including on-device AI deployment and lightweight AI agents.

The launch quickly attracted attention from developers and industry figures. Elon Musk commented on X that the models showed “impressive intelligence density.”

Alibaba first introduced the Qwen family of models in April 2023. The company later opened the models for public use in September after receiving regulatory clearance.

Since then, the Qwen ecosystem has become one of China’s most prominent open-weight AI initiatives, frequently appearing in benchmark comparisons with models developed by leading U.S. companies.

Colleagues React as China Open-Source AI Competition Intensifies

Lin’s departure sparked strong reactions from colleagues and partners who had worked closely with the Qwen team.

Wenting Zhao, a research scientist involved in the project, wrote on X that the move marked “the end of an era,” thanking Lin for his role in advancing the project’s open-source AI engineering efforts.

Yuchen Jin, chief technology officer of AI infrastructure startup Hyperbolic, said Lin helped connect the Qwen team with developers worldwide, recalling late-night collaboration during model launches.

Tiezhen Wang, head of APAC ecosystem at Hugging Face, also described the news as “an immense loss” for the project.

The departure comes at a time when China open-source AI competition OpenAI Google continues to intensify. Developers and companies are racing to build models capable of rivaling systems from major AI labs.

Meanwhile, some signs of additional team changes have emerged. Binyuan Hui, another member of the Qwen team, updated his X profile to say he is “formerly MTS @Alibaba_Qwen,” although it is not clear whether he has also left the company or when the update occurred.

Chen Cheng, a contributor to the Qwen project, wrote on X that he was “heartbroken” by the news. In his message, Cheng suggested the team had been working together on model launches only hours earlier and wrote to Lin, “I know leaving wasn’t your choice.”

The circumstances behind the Alibaba Qwen AI leadership departure remain unclear. Lin did not respond to requests for comment, and Alibaba has not provided further details about the leadership structure of the Qwen team following the change.