Researcher

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

  1. 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.

  2. 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.

  3. 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.

  4. 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.

  5. 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

Photo: We have no published photo of Haowei Zhang yet. Send us a free-licensed photo.

  1. DeepSeek LLM: Scaling Open-Source Language Models with Longtermism arxiv.org. Checked 19 October 2026.
  2. DeepSeekMath: Pushing the Limits of Mathematical Reasoning in Open Language Models arxiv.org. Checked 19 October 2026.
  3. DeepSeek-V2: A Strong, Economical, and Efficient Mixture-of-Experts Language Model arxiv.org. Checked 19 October 2026.
  4. DeepSeek-VL2: Mixture-of-Experts Vision-Language Models for Advanced Multimodal Understanding arxiv.org. Checked 19 October 2026.
  5. DeepSeek-V3 Technical Report arxiv.org. Checked 19 October 2026.
  6. DeepSeek-V3 Technical Report | alphaXiv alphaxiv.org. Checked 19 October 2026.
  7. DeepSeek-R1: Incentivizing Reasoning Capability in LLMs via Reinforcement Learning arxiv.org. Checked 19 October 2026.
  8. DeepSeek-R1 incentivizes reasoning in LLMs through reinforcement learning nature.com. Checked 19 October 2026.
  9. DeepSeek-V3.2: Pushing the Frontier of Open Large Language Models arxiv.org. Checked 19 October 2026.
  10. DeepSeek-V4: Towards Highly Efficient Million-Token Context Intelligence arxiv.org. Checked 19 October 2026.
  11. DeepSeek-V4: Towards Highly Efficient Million-Token Context Intelligence arxiv.org. Checked 19 October 2026.