Caltech
Carnegie Mellon University
Jacob SteinhardtAssociate Professor · UC BerkeleyResearcher↗
Academic · Founder
Joseph Gonzalez
UC BerkeleyAssociate Professor
HeraldCo-founder & Chief AI Officer
Gonzalez helped turn large-scale machine learning into usable open infrastructure. GraphLab and GraphX made graph computation easier to distribute, while LMSYS and Chatbot Arena gave researchers and the public practical ways to serve, compare, and evaluate open language models using human preferences.
Career & education
Current rolesUC Berkeley2021-presentAssociate ProfessorHerald2020-presentCo-founder & Chief AI Officer
UC Berkeley2021-presentHerald2020-presentPreviously
Assistant Professor2016-2021
Postdoc2013-2015
Education
Work and education history is primarily focused on AI-relevant roles and may not be comprehensive.
Citation Trend
Total citations to scholarly work, including research papers, technical reports, books and theses, as recorded by Google Scholar. Each point is a dated snapshot.
citations97,985As of Oct 19, '26
Updates 1
Selected contributions
Chatbot Arena: An Open Platform for Evaluating LLMs by Human Preference
With Wei-Lin Chiang, Lianmin Zheng, Ying Sheng, Anastasios Angelopoulos, Tianle (Tim) Li, Dacheng Li, Hao Zhang and others ·Presented Chatbot Arena, comparing language models through people's votes on anonymous answers.
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Reviewed August 4, 2026 · Checked for accuracy and new information.
