Deli Chen
Also known as 陈德里
Deli Chen is an AI researcher whose work spans graph neural networks, language models, and reasoning systems. He earned degrees in information management and computer science at Peking University, then researched natural language processing and language models at Tencent WeChat AI. At DeepSeek, he coauthored studies of in-context learning, mixture-of-experts models, and reinforcement-learning-based reasoning. He is a senior researcher at DeepSeek and, in May 2026, called for hires to build Code Harness.
Timeline
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2015–2019
A bachelor's at Peking University
He earns a B.S. in information management at Peking University's School of Information Management in 2019.
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2019–2021
Computer science at Peking University
He earns an M.S. in computer science at Peking University in 2021, working in its MOE Key Lab of Computational Linguistics under adviser Xu Sun.
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2020
The over-smoothing problem
In 2020, he coauthors a paper that measures and relieves over-smoothing in graph neural networks from a topological view.
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2021–2023
Research at Tencent WeChat AI
He works as a researcher at Tencent WeChat AI from 2021 to 2023, focusing on NLP and language models.
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2023
Label Words are Anchors
At EMNLP 2023, he coauthors Label Words are Anchors, a study of how example labels guide in-context learning.
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2024
DeepSeekMoE and V3
In 2024, he coauthors DeepSeekMoE, a paper on expert specialization in mixture-of-experts language models. The DeepSeek-V3 technical report also lists him as an author and says the model used 14.8 trillion training tokens.
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2025
DeepSeek-R1 and AI's impact
In 2025, he coauthors the DeepSeek-R1 paper on reinforcement learning for language-model reasoning. In November 2025, he says technology companies should protect human safety and help shape societal order.
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Since 2023
Senior researcher at DeepSeek
He joins DeepSeek as a senior researcher in 2023 and contributes to its models. In May 2026, he calls for hires to build Code Harness from scratch, with the goal of benchmarking against Claude Code.
Career
- Since 2023DeepSeekSenior Researcher
- 2021–2023Tencent Holdings LimitedResearcher
- 2019–2021Peking University
Education
- 2021Peking UniversityM.S. in Computer Science
- 2019Peking UniversityB.S. in Information Management
Sources and credits
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- Deli Chen - DeepSeek AI Researcher
- Vol. 34 No. 04: AAAI-20 Technical Tracks 4
- Label Words are Anchors: An Information Flow Perspective for Understanding In-Context Learning
- DeepSeekMoE: Towards Ultimate Expert Specialization in Mixture-of-Experts Language Models
- DeepSeek-V3 Technical Report
- DeepSeek-R1: Incentivizing Reasoning Capability in LLMs via Reinforcement Learning
- An AI executive's dire warnings about the future are chilling – but his solution is worse than the problem
- China’s DeepSeek Starts Hiring for Agent Harness Team, Taking Aim at Anthropic's Claude Code



