@latepostnews: 29-Year-Old Yao Shunyu Takes Over: 300 Days of Reforming Tencent Hunyuan - In 2024, Tencent's high-level recruitment team met Yao Shunyu at a top academic conference. At that time, the young man born in 1997 was still a researcher at OpenAI, and he was introduced to Tencent President Liu Chiping. A year later, he returned to China and became the head of Tencent's large language model...
Summary
Under Yao Shunyu's leadership, Tencent's Hunyuan large language model undergoes deep reforms: simplifying hierarchy, focusing on data quality, abandoning benchmark chasing, with a goal of entering the domestic first tier by 2027. The article details the changes Yao Shunyu drove within 300 days after parachuting into Tencent from OpenAI, including replacing key responsible persons, strengthening infrastructure, and promoting model-product co-design.
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29-Year-Old Yao Shunyu Takes Over: 300 Days Rebuilding Tencent’s Hunyuan
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In 2024, Tencent’s high-level recruitment team met Yao Shunyu at a top academic conference. Then a 97-born researcher at OpenAI, he was introduced to Tencent President Martin Lau. A year later, he returned to China and became Tencent’s head of large language models.
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Yao was fortunate that before his arrival, Tencent’s top decision-makers had already realized AI could be a do-or-die battle, and Tencent was far behind. Pony Ma said at the 2025 employee meeting: “A year ago we thought we were on the boat, then we found the boat was leaking.” They had cleared obstacles in advance — key leaders in various Hunyuan roles had already left. Yao reports directly to the Group Executive Committee. TEG President Lu Shan, a mild-mannered manager, offered maximum autonomy.
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Upon joining Tencent, Yao made one request to President Martin Lau: for at least one year after the new model’s release, the Executive Committee should not look at benchmarks. One year is roughly the time to train two generations of models. “Martin agreed.”
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When Yao joined as a consultant, his sole task was to diagnose why Hunyuan’s LLM had been lagging behind for so long. The diagnosis: “Simply put, almost every part was leaking.” Hunyuan had over-pursued benchmark scores, putting benchmark-tuning data into the training set and polluting the data. The model became great at exams but performed poorly in real-world scenarios. The data annotation accuracy acceptance line was set at 95%, but actual performance stayed at 60%-70%. Teams churned out large volumes of unusable data just to meet deliverables, and the algorithm team tacitly accepted this.
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Hunyuan had been troubled from the start. When the project was initiated in 2023, the team didn’t even have a single GPU; they finally scrounged 2,000 from the advertising department. The lack of GPUs led to weak infrastructure (Infra), lacking designs for large-scale training tasks. The training pipeline was incomplete; Hunyuan had barely done any reinforcement learning. Under pressure to compete, the team made two choices: one was to switch architecture, taking a risky path by combining Transformer with Mamba — a hybrid architecture not yet fully validated in the industry, but attention-grabbing. “No other major company except Tencent chose it.” The other path was chasing benchmarks to report high scores upward.
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Within months of Yao’s arrival, the heads of pre-training, post-training, evaluation, and Infra were all replaced. New hires came from ByteDance, Kimi, DeepSeek, and Meituan. Hiring no longer focused on background — the current head of Hunyuan’s model architecture is still a PhD student. ByteDance’s Seed recruitment team found several candidates they couldn’t even hire away from Seed. Reason: Seed already has high talent density, making it easy for young people to become “cogs”; but Hunyuan, in its rebuilding phase, needs people urgently.
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The reform was not a storm. Yao didn’t mass-fire veterans, but the pressure was more subtle — he often shared papers and discussed technology in group chats, but very few could keep up, sometimes even understand. “The peer pressure is enormous.”
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Department hierarchy was simplified to just three layers: Yao → domain leads → researchers/interns. When not rushing a release, the intensity at Hunyuan is not high. On the other hand, Hunyuan abolished mid-year performance reviews, encouraging long-term R&D. There are occasional exceptions. “Whenever a team gets someone from Seed, that team quickly starts to self-accelerate.”
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Yao used his former employer OpenAI as an example to encourage the team: Even today, OpenAI’s base model doesn’t rely on any mysterious technology. Building LLMs has no magic, and don’t believe others have magic. The real difficulty is doing all the basic, certain-to-be-correct things correctly — that alone is enough to push Hunyuan into China’s first tier.
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By late May 2026, just one month before the official launch of Hunyuan Hy3, a batch of submitted data had problems. Yao, rare to lose his temper, sternly warned the team: “Data is extremely important. If this happens again, you’re out.”
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Hunyuan Hy3 was the model Yao began training earlier in the year, his first report card since joining Tencent, but internal expectations were modest. Hy3 is not entirely without ambition. According to Yao’s vision, Hunyuan doesn’t need to outperform cutting-edge models like Claude Opus on every capability. If a model can cost 1% of Opus’s price, yet perform as well or even surpass it on 90% of everyday tasks, that is a better model for most users. Hy4 is already in training, and the Hunyuan team predicts entering China’s first tier by 2027.
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In Yao’s plan, models and products should collaborate via a co-design model — models and products are developed together from the start. The model gets real-world scenarios and user feedback immediately, knowing what to improve; products can sync requirements in real time without waiting for a generic model and then adjusting or compromising. Yao knows his main task now is building good relationships with business units and implementing the co-design idea.
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Today the LLM industry generally faces commercialization challenges, but Tencent’s approach is that charging external customers isn’t necessary. If Hunyuan helps business lines increase revenue, that itself is valuable. “For example, Honor of Kings generates tens of billions a year. If Hunyuan helps it increase by 1%, that’s hundreds of millions.”
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At Tencent, once a product gets top management attention, bosses start giving dense feedback, and other supporting departments join in, adding more decision-makers. Last year, Tencent threw company-wide resources behind Yuanbao, so senior execs often gave very specific opinions: “Is the font here too small, not friendly for older people?” “Why use this color for that design?” “As soon as top management comments, the team starts guessing what the boss really means and whether to change it.”
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In 2019, Tencent brought in a batch of engineering and data experts from Google, Snapchat, and Uber. Most left without significant results. Today, Yao has the Executive Committee’s mandate, a defined territory, and sole decision-making power. But when reform goes deeper, involving bigger interests and higher risks, only the Executive Committee can shield him from pressure. At that point, the test is not just on him, but on whether the trust between him and the bosses holds. Reform at its deepest never depends only on the reformer.
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