Haowei Zhang
Haowei Zhang is a researcher whose DeepSeek work spans open language models, mathematical reasoning, vision-language models and reinforcement learning. He coauthored DeepSeek LLM, DeepSeekMath and DeepSeek-V2 in 2024, as well as DeepSeek-VL2 and DeepSeek-V3 in December 2024. Nature published the DeepSeek-R1 study in September 2025, and he coauthored DeepSeek-V3.2 in December 2025. In April 2026, he coauthored a preview of DeepSeek-V4 with a one-million-token context and was a former member of the DeepSeek team.
Timeline
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January–May 2024
Early DeepSeek models
In January 2024, he coauthors DeepSeek LLM, a project for open-source language models. In February 2024, he coauthors DeepSeekMath, which introduces a 7B model trained with 120 billion math-related tokens. In May 2024, he coauthors DeepSeek-V2, a mixture-of-experts language model.
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December 2024
Vision-language and V3
In December 2024, he coauthors DeepSeek-VL2, a mixture-of-experts vision-language model series, and the DeepSeek-V3 technical report, which presents a 671-billion-parameter model.
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January–September 2025
DeepSeek-R1 in Nature
He coauthors DeepSeek-R1 in January 2025, which explores reasoning through pure reinforcement learning. Nature publishes the study in September 2025.
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December 2025
The V3.2 report
In December 2025, he coauthors a report on DeepSeek-V3.2, a model that combines computational efficiency with reasoning and agent performance.
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April 2026
DeepSeek-V4 and departure
In April 2026, he coauthors a preview of DeepSeek-V4, a model series with a one-million-token context. He is a former member of the DeepSeek team by April 2026.
Sources and credits
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- DeepSeek LLM: Scaling Open-Source Language Models with Longtermism
- DeepSeekMath: Pushing the Limits of Mathematical Reasoning in Open Language Models
- DeepSeek-V2: A Strong, Economical, and Efficient Mixture-of-Experts Language Model
- DeepSeek-VL2: Mixture-of-Experts Vision-Language Models for Advanced Multimodal Understanding
- DeepSeek-V3 Technical Report
- DeepSeek-V3 Technical Report | alphaXiv
- DeepSeek-R1: Incentivizing Reasoning Capability in LLMs via Reinforcement Learning
- DeepSeek-R1 incentivizes reasoning in LLMs through reinforcement learning
- DeepSeek-V3.2: Pushing the Frontier of Open Large Language Models
- DeepSeek-V4: Towards Highly Efficient Million-Token Context Intelligence
- DeepSeek-V4: Towards Highly Efficient Million-Token Context Intelligence