Will Cai

MS student, EECS, University of California, Berkeley

Joined

May 2024

Names

Will Cai (Preferred)

Emails

****@berkeley.edu (Confirmed)

Personal Links

Google Scholar

DBLP

Career & Education History

MS student

EECS, University of California, Berkeley (berkeley.edu)

2025 – 2026

Undergrad student

EECS, University of California, Berkeley (berkeley.edu)

2021 – 2025

Advisors, Relations & Conflicts

No relations added

Expertise

No areas of expertise listed

Publications

Confidence-Guided MCTS for Efficient Long-Horizon Web Agent Tasks
Will Cai, Xuandong Zhao, Dawn Song
- Submitted to ICLR 2026
- Readers: Everyone
Are You Getting What You Pay For? Auditing Model Substitution in LLM APIs
Will Cai, Tianneng Shi, Xuandong Zhao, Dawn Song
- Submitted to ICLR 2026
- Readers: Everyone
PromptArmor: An Essential Baseline for Prompt Injection Defenses
Tianneng Shi, Kaijie Zhu, Zhun Wang, Yuqi Jia, Will Cai, Weida Liang, Haonan Wang, Hend Alzahrani, Joshua Lu, Kenji Kawaguchi, Basel Alomair, Xuandong Zhao, William Yang Wang, Neil Zhenqiang Gong, Wenbo Guo, Dawn Song
- Submitted to ICLR 2026
- Readers: Everyone
Automated Generation of Multilingual Jailbreak Prompts
Jonathan Ding, Will Cai, Khanak Jain, Dhruv Nair, Aditya Naha, Kevin Zhu, Vasu Sharma
- NeurIPS 2025 - Reliable ML Workshop
- Readers: Everyone
Death by a Thousand Directions: Exploring the Geometry of Harmfulness in LLMs through Subconcept Probing
McNair Shah, Saleena Angeline Sartawita, Adhitya Rajendra Kumar, Naitik Chheda, Will Cai, Kevin Zhu, Sean O'Brien, Vasu Sharma
- Mech Interp Workshop (NeurIPS 2025) Poster
- Readers: Everyone
Are You Getting What You Pay For? Auditing Model Substitution in LLM APIs
Will Cai, Tianneng Shi, Xuandong Zhao, Dawn Song
- RegML 2025 Poster
- Readers: Everyone
Death by a Thousand Directions: Exploring the Geometry of Harmfulness in LLMs through Subconcept Probing
McNair Shah, Saleena Angeline Sartawita, Adhitya Rajendra Kumar, Naitik Chheda, Kevin Zhu, Vasu Sharma, Sean O'Brien, Will Cai
- INTERPLAY
- Readers: Everyone
Are You Getting What You Pay For? Auditing Model Substitution in LLM APIs
Will Cai, Tianneng Shi, Xuandong Zhao, Dawn Song
- CoRR 2025
- Readers: Everyone
Improving LLM Safety Alignment with Dual-Objective Optimization
Xuandong Zhao, Will Cai, Tianneng Shi, David Huang, Licong Lin, Song Mei, Dawn Song
- CoRR 2025
- Readers: Everyone
Improving LLM Safety Alignment with Dual-Objective Optimization
Xuandong Zhao, Will Cai, Tianneng Shi, David Huang, Licong Lin, Song Mei, Dawn Song
- ICML 2025 poster
- Readers: Everyone

View all 12 publications

Co-Authors

View all 34 co-authors