PeopleofSuperintelligence

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YenSung Chen

Also known as Yen-Sung Chen

YenSung Chen is a software engineer whose work includes scholarly reading tools, vision-language models, and language-model tracing. He began in software at QSAN, served as a research assistant at National Taiwan University, and joined Ai2's Semantic Scholar team. At Ai2, he coauthored the Semantic Reader paper and worked on its skimming feature for research papers. He coauthored Molmo and PixMo in 2024 and OLMoTrace in 2025; the OLMoTrace team received the ACL 2025 Best Demo Paper Award. He is a Software Development Engineer II in ReView at Ai2, a role he started in January 2024, and by 2026 holds an MS from the University of Massachusetts Amherst and a bachelor's degree from National Taiwan University.

Badges

Timeline

  1. 2015–2017

    Software engineer and product manager

    At QSAN, he works as a software engineer from July 2015 to August 2016, then as a product manager from September 2016 to July 2017.

  2. March 2018–December 2018

    Research assistant at NTU

    He works as a research assistant at National Taiwan University from March 2018 to December 2018.

  3. 2021–2023

    Semantic Scholar engineer

    At Ai2, he works as a Software Development Engineer I and II for Semantic Scholar from May 2021 to December 2023.

  4. 2023

    Semantic Reader paper and feature

    In 2023, he coauthors the Semantic Reader Project paper, which describes AI-powered reading interfaces for research papers. An Ai2 case study published in 2023 names him among the collaborators on the Semantic Reader skimming feature.

  5. 2024–2025

    Molmo and PixMo

    In 2024, he coauthors Molmo and PixMo, a paper presenting a family of vision-language models and new datasets. The work appears in the 2025 CVPR proceedings.

  6. 2025

    ACL Best Demo Paper Award

    In 2025, he coauthors OLMoTrace, a system that traces language-model outputs to their full, multi-trillion-token training data in real time. The team receives the ACL 2025 Best Demo Paper Award.

  7. By 2026

    Degrees from UMass and NTU

    By 2026, he holds an MS from the University of Massachusetts Amherst and a bachelor's degree from National Taiwan University.

  8. Since January 2024

    Engineer II at Ai2

    He is a Software Development Engineer II in ReView at Ai2, a role he starts in January 2024.

Career

  1. Since 2021Allen Institute for AI (Ai2)Software Development Engineer I and II, Software Development Engineer II
  2. 2018National Taiwan UniversityResearch assistant
  3. 2015–2017QSANSoftware engineer, Product manager

Education

  1. University of Massachusetts AmherstMS
  2. National Taiwan UniversityBachelor's degree

From the biography.

  1. The company share of AI researchers’ top papers was 31% in 2020–2024 and 8% in 1970–1974Includes Allen Institute for AI (Ai2). We estimate where the people shaping AI worked when their most-cited papers appeared: the company share was 31% in 2020–2024 and 8% in 1970–1974, and Google led all organizations in 2020–2024.
  2. Companies supply the most prior-work hires at 7 of the 9 frontier AI labsIncludes Allen Institute for AI (Ai2). Our estimates of the organizations where 550 people worked directly before joining 9 frontier AI labs across 620 career transitions, comparing the main feeder organizations per lab.
  3. 72% of AI researchers with top works connect into a single 2,592-person co-author groupIncludes Allen Institute for AI (Ai2). We map the co-author network across 3,593 people shaping AI and 14,977 most-cited papers: 2,592 (72%) form one connected group with a median distance of 5 steps, led in 2-step reach by Yoshua Bengio (570) and in shortest-path bridging by Yoshua Bengio (6.7%).
  4. Direct Form 990 pay in the latest returns of 39 nonprofits with AI people on this site is highest at $2.1M at the Allen Institute for AI (Ai2) (2024)Includes Allen Institute for AI (Ai2). IRS Form 990 compensation across 39 nonprofits with AI people on this site from 2012 to 2025: in the latest returns, Mozilla reports $6.1M including related-company pay (2024) and the Allen Institute for AI (Ai2) leads direct nonprofit pay at $2.1M (2024).

Colleagues

People with dated positions at the same organization in the same years.

Sources and credits

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

  1. Yen Sung Chen: Email & Phone Number signalhire.com. Checked 21 October 2026.
  2. The Semantic Reader Project: Augmenting Scholarly Documents through AI-Powered Interactive Reading Interfaces arxiv.org. Checked 21 October 2026.
  3. Case study: Iterative design for skimming support allenai.org. Checked 21 October 2026.
  4. Molmo and PixMo: Open Weights and Open Data for State-of-the-Art Vision-Language Models arxiv.org. Checked 21 October 2026.
  5. Molmo and PixMo: Open Weights and Open Data for State-of-the-Art Vision-Language Models openaccess.thecvf.com. Checked 21 October 2026.
  6. OLMoTrace: Tracing Language Model Outputs Back to Trillions of Training Tokens aclanthology.org. Checked 21 October 2026.
  7. Allen School researchers recognized at ACL 2025 for shaping the present and future of natural language processing news.cs.washington.edu. Checked 21 October 2026.