Researcher

Erhang Li

Erhang Li is a DeepSeek-AI researcher whose work spans open language models, reinforcement-learning reasoning, and systems for agent training. His 2024 work includes DeepSeek LLM's 7B and 67B configurations and DeepSeek-V3's 671B-parameter mixture-of-experts model. In 2025, he coauthors DeepSeek-R1 and DeepSeek-V3.2; in 2026, he works on the million-token DeepSeek-V4 and DeepSeek Elastic Compute. As of October 2026, he contributes to DeepSeek-AI model research.

Timeline

  1. 2024

    Scaling DeepSeek LLM

    In 2024, he coauthors DeepSeek LLM, which studies scaling open-source language models in the 7B and 67B configurations. The team uses a 2-trillion-token pretraining dataset, and the 67B Chat model outperforms LLaMA-2 70B on code, mathematics and reasoning benchmarks.

  2. 2024

    DeepSeek-V3 technical report

    In 2024, he coauthors the DeepSeek-V3 report, which describes a 671B-parameter mixture-of-experts model with 37B parameters active per token. It introduces multi-token prediction and auxiliary-loss-free load balancing.

  3. 2025

    DeepSeek-R1 reasoning research

    In 2025, he coauthors DeepSeek-R1 research on reasoning through reinforcement learning. Its published training pipeline combines rejection sampling, reinforcement learning and supervised fine-tuning.

  4. December 2025

    DeepSeek-V3.2 model

    In December 2025, he coauthors DeepSeek-V3.2, which combines efficient sparse attention with scaled reinforcement learning to improve reasoning and agent performance.

  5. April 2026

    DeepSeek-V4 long-context models

    In April 2026, he coauthors the DeepSeek-V4 report, which introduces Pro and Flash mixture-of-experts models that support a one-million-token context.

  6. September 2026

    DeepSeek Elastic Compute

    In September 2026, he coauthors DeepSeek Elastic Compute, a production sandbox platform with function-call, container, microVM and full-VM backends for large-scale agent training.

  7. As of October 2026

    Research contributor at DeepSeek-AI

    As of October 2026, he contributes to DeepSeek-AI model research, including the 2026 DeepSeek-V4 project.

Sources and credits

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  1. DeepSeek LLM: Scaling Open-Source Language Models with Longtermism arxiv.org. Checked 19 October 2026.
  2. DeepSeek-V3 Technical Report arxiv.org. Checked 19 October 2026.
  3. DeepSeek-R1: Incentivizing Reasoning Capability in LLMs via Reinforcement Learning arxiv.org. Checked 19 October 2026.
  4. DeepSeek-R1 incentivizes reasoning in LLMs through reinforcement learning nature.com. Checked 19 October 2026.
  5. DeepSeek-V3.2: Pushing the Frontier of Open Large Language Models arxiv.org. Checked 19 October 2026.
  6. DeepSeek-V4: Towards Highly Efficient Million-Token Context Intelligence arxiv.org. Checked 19 October 2026.
  7. DeepSeek Elastic Compute (DSec): A Sandbox Infrastructure for Effective Agentic Training at Scale arxiv.org. Checked 19 October 2026.
  8. Erhang Li | 500AI 500ai.org. Checked 19 October 2026.