Research

* denotes equal contribution

I do research in AI safety. I'm most interested in how models generalize and misgeneralize. My favourite writings on this topic are Paul Christiano's essays circa 2018–19. * denotes equal contribution

Sabotage Capability Is Predictable from Five Parameters

Jo J. Jiao, Aryan Bhatt

Preprint under review; work done at Redwood Research

Abstract

Measuring AI's ability to cause harm despite control measures informs risk assessments. In existing sabotage capability evaluations, when we evaluate an attacker against a monitor in one setting, we do not know how the result generalizes to other models or settings, or what scores warrant stronger control measures. To address this limitation, we posit that model sabotage capability has latent structure that enables prediction of unmeasured outcomes, and find evidence for this hypothesis. With just three parameters per attacker and two parameters per monitor, we can predict how well an attacker AI performs against a monitor without having measured the pair. We also can translate these parameters between control settings to predict sabotage success probability in different evaluations. The predictive power of our simple model contributes towards more integrated, sample-efficient, and decision-relevant sabotage capability evaluations. We furthermore use this model to find that sabotage capability trends increase with general capabilities, as measured by ECI.

Uncovering Hidden Propensities in Language Models via Limited-Parameter Finetuning

Boyd Kane*, Jo J. Jiao*, Bryce Woodworth, Elizabeth Donoway, Alex Cloud, Alexander Matt Turner

NeurIPS 2026 Main Conference (Poster); work done at MATS

More

At MATS, my collaborator and I developed a new finetuning-based propensity auditing method. Our work was selected as one of eight Spotlight talks at the end-of-fellowship MATS Symposium.

This project began as an attempt to apply Elizabeth Donoway's excess description length to propensity evaluations. We ended up somewhere quite different, but I still think EDL is important for understanding what the method measures. Some notes & links to her papers here.

Think Fast: Estimating No-CoT Task-Completion Time Horizons of Frontier AI Models

Dewi Gould*, Francis Rhys Ward*, Anders Cairns Woodruff, Rauno Arike, Josh Hills, Alex Serrano, Ida Caspary, Jason Ross Brown, Jo J. Jiao, Patrick Leask, Twm Stone, Ram Potham, Ionut Gabriel Stan, Harry Mayne, Simeon Hellsten, Shubhorup Biswas, Ariana Azarbal, William L. Anderson, Elle Najt, Ryan Greenblatt, Julian Stastny

arXiv:2606.07157; blog post; work done at MATS

Narrow RL Induces Broad Behavior Changes in LLMs

Jo J. Jiao, Austin C. Kozlowski, James Evans

NeurIPS 2025 Workshop on LLM Evaluation; work done at UChicago XLab and Knowledge Lab