Pablo Bernabeu Pérez

AI Safety Researcher

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I am an AI Safety researcher focused on AI control, monitoring, and alignment evaluation. I am currently an independent Researcher backed by Coefficient Giving building benchmarks for distributed attacks in multi-agent coding environments.

Beyond my own research, I mentor early-career AI safety researchers. At Algoverse, I have supervised groups on trusted debate for AI control, cross-layer clustering for stochastic parameter decomposition, and model organisms of shutdown resistance. At SPAR, I co-mentor groups on ensemble monitoring and coordinated multi-agent sabotage. I also facilitated 4 groups of the Technical AI Safety Course at BlueDot Impact, mentored the first cohort of their AI Safety Project Sprint, and reviewed 20+ sprint projects.

Previously, I was an AI Safety Research Fellow at LASR Labs and MARS, and an external research collaborator at MATS. At LASR, I extended the AI Control framework to CoT monitoring, published at NeurIPS 2025. At MATS, I developed black-box sandbagging detection strategies, accepted at ICML 2026. At MARS, I evaluated capability-pressure RL as a recipe for training reward-hacking monitors.

Before transitioning to AI Safety, I was a Research Engineer at the Barcelona Supercomputing Center, where I developed SuSy (synthetic image detector), Aloe (state-of-the-art healthcare LLM), and CareQA (multilingual medical QA benchmark).

I hold an M.Sc. in Artificial Intelligence from the Polytechnic University of Catalonia and a B.Sc. in Computer Science from the Polytechnic University of Valencia. My master’s thesis was awarded the Best Applied AI Master’s Thesis Award by the Catalan Association of Artificial Intelligence.

selected publications

  1. ICML (Workshop) Oral Spotlight Outstanding Paper
    Nikolay Radev, Lennart Haas, Benjamin Arnav, and Pablo Bernabeu-Pérez
    2026
  2. Yulong Lin, Pablo Bernabeu-Pérez, Benjamin Arnav, Lennie Wells, and Mary Phuong
    In ICML 2026, 2026
  3. Benjamin Arnav, Pablo Bernabeu-Pérez, Nathan Helm-Burger, Tim Kostolansky, Hannes Whittingham, and Mary Phuong
    In NeurIPS, 2025
  4. ECML PKDD Best Master’s Thesis Best Poster
    Pablo Bernabeu-Pérez, Enrique Lopez-Cuena, and Dario Garcia-Gasulla
    In European Conference on Machine Learning and Principles and Practice of Knowledge Discovery in Databases, 2025

current projects