Qwen's Tech Lead Junyang Lin Steps Down From Alibaba

Junyang Lin, the technical lead behind Alibaba's Qwen series of open-source AI models, announced his departure from the company today in a terse post on X.

"me stepping down. bye my beloved qwen," Lin wrote, with no further explanation.

me stepping down. bye my beloved qwen.

- Junyang Lin (@JustinLin610) March 3, 2026

The post racked up over 370,000 views and more than 3,300 likes within hours. Lin's X bio still reads "building Qwen universe" and links to qwen.ai, suggesting the announcement is very fresh. Alibaba has not publicly commented on the departure.

Lin's exit is not an isolated event. It is the fourth major departure from Alibaba's Tongyi Lab - the research unit that built Qwen - in under two years, and arguably the most damaging.

Who Is Junyang Lin

Lin, 32, is an unusual figure in the world of large language models. Unlike most AI leads who come from computer science or engineering, he studied English literature at the University of International Relations in Beijing before earning a master's in linguistics from Peking University. He speaks six languages. He joined Alibaba's DAMO Academy in 2019 as a senior algorithm engineer and rose through the ranks to become the technical lead of the entire Qwen series.

In May 2025, Alibaba promoted him to P10 - a vice-president-level rank in the company's hierarchy - making him the youngest person ever to hold that title at 32. The promotion was widely interpreted as a retention move, coming on the heels of three other high-profile departures from Tongyi Lab.

Under Lin's leadership, Qwen grew from a closed system into the world's largest open-source AI ecosystem. The models have been downloaded more than 600 million times and spawned over 170,000 derivative models. Internal data cited by Alibaba puts Qwen's enterprise adoption at 17.7% among Chinese companies - the highest in the industry. The flagship Qwen3-Max, with over one trillion parameters, competed directly with GPT-5 and Claude Opus 4 on major benchmarks. Lin delivered a keynote at ICLR 2025 on the Qwen model family and was first author or lead contributor on virtually all of Qwen's technical reports.

In October 2025, Lin announced he had built a robotics and embodied AI team within Qwen, signaling Alibaba's push into physical-world AI systems.

As recently as February, he led the launch of Qwen 3.5, the latest generation of Alibaba's open-source model. There were no visible signs of dissatisfaction in his public communications. At a Tsinghua University panel in January, he gave a 20% probability to a Chinese company leading globally in AI within three to five years - an answer that suggested engagement, not disillusionment.

A Pattern of Departures

Lin's departure follows three other senior exits from Tongyi Lab that have collectively stripped the unit of its top leadership across language, speech, and vision.

Zhou Chang, a lead researcher behind Qwen's core algorithms, left for ByteDance in July 2024 with a reported eight-figure annual package (over 10 million RMB). More than ten team members followed him. Alibaba filed arbitration over non-compete violations, seeking damages exceeding 10 million RMB.

Yan Zhijie, who led Tongyi's speech lab and held P10 rank, departed in February 2025. He briefly joined Tencent's AI Lab before moving to JD.com's Explore Research Institute.

Bo Liefeng, head of Tongyi's applied vision division, left in April 2025 for Tencent's Hunyuan AI model team.

The South China Morning Post characterized the pattern as making Tongyi Lab "a target for talent poaching by Chinese rivals" and called it Alibaba's second major brain drain following a mass departure from DAMO Academy in 2022.

Alibaba had responded aggressively. Beyond Lin's accelerated P10 promotion, the company deployed salaries reportedly 50% above market averages for core positions, offered outstanding PhD candidates annual packages exceeding one million RMB, and enforced one-to-two-year non-compete agreements covering Baidu, Tencent, ByteDance, SenseTime, and Megvii with zero-tolerance penalties.

None of it was enough.

The Timing

The announcement came just one day after Alibaba completed a major brand unification, dropping the "Tongyi" prefix from its model brand and consolidating everything under the "Qwen" name. That restructuring followed a December 2025 merger of Alibaba's intelligent information and intelligent connectivity business groups into a new consumer business group focused on Qwen.

Organizational restructurings at Alibaba have historically preceded talent departures. The 2022 DAMO Academy exodus followed a similar pattern of internal upheaval.

What Happens Next

Where Lin goes is unclear. He has not said, and there are multiple plausible destinations.

The previous three departures all went to direct competitors - ByteDance, Tencent, and JD.com - which would make a rival Chinese tech giant the default assumption. But Lin's emotional tone ("bye my beloved qwen") reads more like a genuine farewell than a lateral move, and his recent pivot into robotics and embodied AI positions him well for the booming Chinese robotics startup scene.

Whether Alibaba pursues non-compete enforcement, as it did with Zhou Chang, remains to be seen.

Alibaba is not without depth. The SCMP has profiled the young engineering talent at Tongyi Lab, including Liu Dayiheng on foundation models, Hui Binyuan on coding models, and Bai Shuai on vision-language systems. But losing the person who built the Qwen brand, defined its open-source strategy, and served as its public face to the global developer community is qualitatively different from losing a lab head.

Qwen's next model cycle will be the test. Lin built the ecosystem. Now Alibaba has to prove it can run without him.