PeopleofSuperintelligence

Researcher

Liwei Jiang

Also known as 姜力炜

Liwei Jiang is an AI safety researcher who studies machine morality and the sameness of language-model outputs, and whose Artificial Hivemind paper won a NeurIPS 2025 Best Paper Award. After a B.A. in computer science and mathematics at Colby College in 2019, she earned a Ph.D. at the University of Washington's Allen School under Yejin Choi, defending it in May 2026. She was first author of the Delphi paper, published in Nature Machine Intelligence in 2025, and led Artificial Hivemind, whose Infinity-Chat benchmark showed that more than 70 language models give similar answers to open-ended questions. Since April 2026, she is a Research Scientist at NVIDIA and an incoming assistant professor of computer science at the University of California, Irvine.

Now at
NVIDIA

Timeline

  1. 2015–2019

    A Colby College degree

    She studies computer science and mathematics at Colby College from 2015 to 2019 and graduates with a B.A., summa cum laude.

  2. September 2019

    PhD under Yejin Choi

    In September 2019, she begins a Ph.D. in Computer Science and Engineering at the University of Washington's Paul G. Allen School of Computer Science & Engineering, advised by Yejin Choi.

  3. June 2020–December 2024

    Researcher at Ai2

    From June 2020 to December 2024, she works as a graduate student researcher at the Allen Institute for Artificial Intelligence (Ai2), on the Mosaic and AllenNLP teams.

  4. 2021–2025

    Delphi and machine morality

    In October 2021, she is first author of “Can Machines Learn Morality? The Delphi Experiment,” which introduces Delphi, an experimental framework of deep neural networks trained to reason about descriptive ethical judgments. In January 2025, the journal version appears in Nature Machine Intelligence as “Investigating machine moral judgement through the Delphi experiment,” describing Delphi as an open-source AI system trained to predict the moral judgements of US participants.

  5. 2022

    NeuroLogic A*esque decoding

    She coauthors “NeuroLogic A*esque Decoding: Constrained Text Generation with Lookahead Heuristics” with Ximing Lu, Sean Welleck, Yejin Choi and others. The decoding algorithm adds heuristic estimates of future cost to constrained text generation, and the paper receives the Best new method paper award at NAACL 2022.

  6. March 2025–March 2026

    Guardrails research at NVIDIA

    In March 2025, she joins the NeMo Guardrails team at NVIDIA as a graduate student researcher, a role she holds until March 2026.

  7. December 2025

    A NeurIPS Best Paper Award

    In December 2025, “Artificial Hivemind: The Open-Ended Homogeneity of Language Models (and Beyond),” a paper she leads, receives a Best Paper Award at NeurIPS 2025. Its Infinity-Chat benchmark pairs 26,000 real-world open-ended queries with more than 31,000 human preference annotations, and tests of more than 70 language models show similar outputs across models.

  8. Since April 2026

    Research Scientist at NVIDIA

    In April 2026, she joins NVIDIA as a Research Scientist, and in May 2026, she defends her Ph.D. on Humanistic, Pluralistic, and Coevolutionary AI Safety and Alignment. Her work covers moral and pluralistic value reasoning in language models. She is also an incoming assistant professor in the Department of Computer Science at the University of California, Irvine.

Career

  1. Since 2025NVIDIAGraduate Student Researcher, Research Scientist
  2. 2020–2024Allen Institute for AI (Ai2)Graduate Student Researcher
  3. University of California, IrvineIncoming Assistant Professor

Education

  1. 2019Colby CollegeB.A.
  2. From 2019University of WashingtonPhD

From the biography.

  1. Google has the highest combined h-index among AI organizationsIncludes NVIDIA. We estimate that Google holds the highest combined h-index at 8,016, while universities account for 73% of the deduplicated total across AI organizations.
  2. 20% of people at companies who shape AI also hold a university role, led by Google and Stanford UniversityIncludes NVIDIA. We estimate that 539 of the 6,766 people with a known current organization (8%) hold both a university role and a company role, including 20% of people at companies and 13% of people at universities.
  3. Google alumni have founded or led 133 other organizations, more than any other AI labIncludes NVIDIA. We estimate that alumni of 17 major AI labs went on to found or lead 350 other organizations, including 226 they founded, and we trace 472 career moves directly between 23 labs since 2010.
  4. Universities (31%) and startups and other companies (25%) employ the largest shares of 2020–2026 entrantsIncludes NVIDIA. Among 819 people whose first recorded role started in 2020–2026 and who have a known current organization, 60% work in commercial sectors (25% at startups and other companies, 23% at frontier labs and 13% at big tech, with 9 in two), and 31% work at universities, compared with 66% for earlier entrants.

Colleagues

People named in this biography, and people with dated positions at the same organization in the same years.

Sources and credits

Photo: We have no published photo of Liwei Jiang yet. Send us a free-licensed photo.

  1. Liwei Jiang liweijiang.me. Checked 21 October 2026.
  2. Liwei Jiang, Electrical and Computer Engineering Department Seminar calendars.illinois.edu. Checked 21 October 2026.
  3. Can Machines Learn Morality? The Delphi Experiment arxiv.org. Checked 21 October 2026.
  4. Investigating machine moral judgement through the Delphi experiment | Nature Machine Intelligence nature.com. Checked 21 October 2026.
  5. NAACL 2022 Best Paper Awards! - NAACL-HLT 2022 2022.naacl.org. Checked 21 October 2026.
  6. NeuroLogic A*esque Decoding: Constrained Text Generation with Lookahead Heuristics - ACL Anthology aclanthology.org. Checked 21 October 2026.
  7. Allen School researchers earn NeurIPS Best Paper Award for revealing the ‘Artificial Hivemind’ effect across LLM open-ended generation news.cs.washington.edu. Checked 21 October 2026.
  8. Announcing the NeurIPS 2025 Best Paper Awards – NeurIPS Blog blog.neurips.cc. Checked 21 October 2026.