Daya Guo

FIRST AUTHOR ON DEEPSEEK'S REASONING PAPERS

Guo trained in code intelligence, joined DeepSeek almost as soon as it existed, and became a named researcher on the systems that built the lab's technical reputation — lead author on DeepSeek-Coder, and first author of the peer-reviewed R1 reasoning paper.

1. Aug 2014

   HE STARTS COMPUTER SCIENCE AT SUN YAT-SEN

   Guo began his undergraduate degree in computer science and technology at Sun Yat-sen University.

   SOURCES: Daya Guofirst-party

2. Aug 2018

   THE CODE-INTELLIGENCE WORK BECOMES A PHD

   Guo began a PhD at Sun Yat-sen University, including a joint program with Microsoft Research Asia focused on natural language and code intelligence.

   SOURCES: Daya Guofirst-party

3. Jul 2023

   HE JOINS DEEPSEEK IN ITS FIRST YEAR

   After completing his doctorate, Guo joined DeepSeek as an AI researcher working on code intelligence and large-model reasoning.

   SOURCES: Daya Guofirst-party

4. Jan 25, 2024

   DEEPSEEK-CODER MAKES PROGRAMMING A FRONTIER MODEL PROBLEM

   Guo was lead author of DeepSeek-Coder, an open family of code models trained from scratch for programming tasks.

   SOURCES: DeepSeekfirst-party

5. Jun 17, 2024

   CODER V2 GOES AFTER CLOSED-SOURCE MODELS

   Guo was a leading author on DeepSeek-Coder-V2, which expanded the model family with mixture-of-experts architecture and broader code capability.

   SOURCES: DeepSeekfirst-party

6. Sep 17, 2025

   THE CODING RESEARCHER ENDS UP ON DEEPSEEK-R1

   Guo was first author of the peer-reviewed DeepSeek-R1 paper describing the reinforcement-learning methods that elicit reasoning behavior — GRPO, the group-relative RL recipe from DeepSeekMath.

   SOURCES: Naturereported

7. Apr 2026

   THREE YEARS IN, THE R1 FIRST AUTHOR WALKS

   Guo's personal research biography records his DeepSeek tenure as running from July 2023 through April 2026.

   SOURCES: Daya Guofirst-party