Kai Dong
Kai Dong is a DeepSeek-AI research contributor whose coauthored work spans open language models, code generation, vision-language systems and reasoning. In 2024, he coauthored DeepSeek LLM, DeepSeek-Coder, DeepSeek-V2, DeepSeek-V3 and DeepSeek-VL. The 2025 DeepSeek-R1 paper explored reinforcement-learning reasoning, and DeepSeek-V3.2 added sparse attention and a pipeline for agent training. As of October 2026, he contributes to DeepSeek-AI research as a coauthor of the V4.1-Flash report on multimodal, long-context models.
Timeline
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2024
DeepSeek LLM dataset
In 2024, he coauthors DeepSeek LLM, a project that studies scaling laws for open-source language models and uses a pretraining dataset of two trillion tokens.
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2024
DeepSeek-Coder series
In 2024, he coauthors DeepSeek-Coder, an open-source code-model series with model sizes from 1.3B to 33B, trained from scratch on two trillion tokens.
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March 2024
DeepSeek-VL release
In March 2024, he coauthors DeepSeek-VL, an open-source vision-language model for real-world understanding; the team releases base and chat models in 1.3B and 7B sizes.
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2024
DeepSeek-V2 language model
In 2024, he coauthors DeepSeek-V2, a mixture-of-experts language model with 236B total parameters and 21B active per token. It supports a 128K-token context and uses sparse computation to make training more economical.
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2024
DeepSeek-V3 architecture
In 2024, he coauthors the DeepSeek-V3 report, which describes a 671B-parameter mixture-of-experts model with 37B active per token. The model uses multi-head latent attention, DeepSeekMoE, auxiliary-loss-free load balancing and multi-token prediction.
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2025
DeepSeek-R1 reasoning
In 2025, he coauthors the Nature paper on DeepSeek-R1, which shows that pure reinforcement learning can incentivize language-model reasoning without human-labelled reasoning trajectories. The framework develops self-reflection, verification and dynamic strategy adaptation.
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2025
DeepSeek-V3.2 and agents
In 2025, he coauthors DeepSeek-V3.2, which combines DeepSeek Sparse Attention with a scalable reinforcement-learning framework and a synthesis pipeline that generates training data for tool-use tasks.
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As of October 2026
DeepSeek-V4.1-Flash report
As of October 2026, he contributes to DeepSeek-AI research as a coauthor of its V4.1-Flash report. The report describes a multimodal 552B-parameter mixture-of-experts model with a one-million-token context and compressed key-value caching for long-context agent workloads.
Sources and credits
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- DeepSeek LLM: Scaling Open-Source Language Models with Longtermism
- DeepSeek-Coder: When the Large Language Model Meets Programming -- The Rise of Code Intelligence
- GitHub - deepseek-ai/DeepSeek-VL: DeepSeek-VL: Towards Real-World Vision-Language Understanding
- DeepSeek-V2: A Strong, Economical, and Efficient Mixture-of-Experts Language Model
- DeepSeek-V3 Technical Report
- DeepSeek-R1 incentivizes reasoning in LLMs through reinforcement learning | Nature
- DeepSeek-V3.2: Pushing the Frontier of Open Large Language Models
- DeepSeek-V4.1-Flash: Pushing the Limits of KV Cache Compression