My face

Timothy H. Kostolansky

some things i've done

2026
decentralizing frontier AI · Prime Intellect
2025–26
building AI for a human future · Workshop Labs
2025
investigating entity representations in LLMs · CHAI
2025
stress-testing chain-of-thought monitoring · LASR Labs
2023–24
inverse constitution learning · AAG
2023–24
MEng CS · MIT
2019–23
BS Physics & BS CS · MIT
2019
basketball · JPN
reach me at:

selected publications

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Post-Training 50x Faster

Addie Foote, Rudolf Laine, Timothy H. Kostolansky

blog post, Workshop Labs Blog, March 2026

CoT Red-Handed: Stress Testing Chain-of-Thought Monitoring

Benjamin Arnav*, Pablo Bernabeu-Pérez*, Nathan Helm-Burger*, Timothy H. Kostolansky*, Hannes Whittingham*, Mary Phuong

arXiv, poster, In Proc. NeurIPS 2025, June 2025

Inverse Constitutional AI

Timothy H. Kostolansky

pdf, Master's Thesis, May 2024