Aohan Zeng
Also known as 曾奥涵
Aohan Zeng researches language models, agent systems, and multimodal reasoning. He coauthored FastMoE in 2021, GLM-130B in 2022, AgentTuning in 2023, and LongBench and GLM-4-Voice in 2024. GLM-4.5 expanded his work to vision-language models and agentic reasoning in 2025; he also discussed smaller mixture-of-experts models at an August 2025 AMA. In 2026, he coauthored GLM-5 and IF-CRITIC; he is a Z.ai researcher and a computer-science PhD student at Tsinghua University.
Timeline
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2021–2022
From FastMoE to GLM-130B
In 2021, he coauthors FastMoE, a PyTorch system for distributed mixture-of-experts training. In 2022, he coauthors GLM-130B, a bilingual language model with 130 billion parameters.
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2023
Tuning language models for agents
In 2023, he coauthors AgentTuning, a method that enhances LLM agent abilities while maintaining general language-model capabilities.
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2024
Measuring long context
He coauthors LongBench, a bilingual multitask benchmark for long-context understanding, in 2024.
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2024
Building a spoken chatbot
In 2024, he coauthors GLM-4-Voice, an end-to-end chatbot for real-time spoken conversations in Chinese and English.
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July 2025–August 2025
Vision and agentic GLM models
In July 2025, he coauthors GLM-4.1V-Thinking and GLM-4.5V, vision-language models for multimodal reasoning. In August 2025, he coauthors GLM-4.5, an open-source model for agentic, reasoning, and coding tasks.
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August 2025
Discussing smaller MoE models
At GLM-4.5's public AMA in August 2025, he says the team will consider releasing smaller mixture-of-experts models.
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2026
GLM-5 and IF-CRITIC
In 2026, he coauthors GLM-5, a foundation model aimed at agentic engineering, and IF-CRITIC, an LLM critic for instruction-following evaluation.
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Since 2024
Z.ai researcher and Tsinghua PhD student
He joins Z.ai as a researcher in 2024 and is a computer-science PhD student at Tsinghua University, where he starts in 2021.
Career
- Since 2024Zhipu AIResearcher
Education
- From 2021Tsinghua UniversityPhD
Most-cited works
- GLM-130B: An Open Bilingual Pre-trained Model
- ChatGLM: A Family of Large Language Models from GLM-130B to GLM-4 All ToolsWith Li Juanzi
- LongBench: A Bilingual, Multitask Benchmark for Long Context UnderstandingWith Li Juanzi
- xTrimoPGLM: Unified 100B-Scale Pre-trained Transformer for Deciphering the Language of Protein
- AgentBench: Evaluating LLMs as Agents
Sources and credits
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- FastMoE: A Fast Mixture-of-Expert Training System
- GLM-130B: An Open Bilingual Pre-trained Model
- AgentTuning: Enabling Generalized Agent Abilities for LLMs
- LongBench: A Bilingual, Multitask Benchmark for Long Context Understanding
- GLM-4-Voice: Towards Intelligent and Human-Like End-to-End Spoken Chatbot
- GLM-4.5V and GLM-4.1V-Thinking: Towards Versatile Multimodal Reasoning with Scalable Reinforcement Learning
- GLM-4.5: Agentic, Reasoning, and Coding (ARC) Foundation Models
- 智谱 GLM-4.5 团队深夜爆料:上下文要扩、小模型在路上,还承诺尽快发新模型!
- GLM-5: from Vibe Coding to Agentic Engineering
- IF-CRITIC: Towards a Fine-Grained LLM Critic for Instruction-Following Evaluation
- Aohan Zeng


