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I am Harsh Raj, currently pursuing a M.S. in Computer Science at Northeastern University, Boston. I am also the Co-Founder of the open-source organization Ontocord AI. Previously, I worked as an Applied Scientist at VijilAI.

My research interests focus on language agents, language model evaluation, and software engineering. Over the past few years, I have been fortunate to grow as a researcher with the support of wonderful collaborators and mentors.

Most recently, I led the MixtureVitae project at Ontocord AI alongside Huu Nguyen, developing state-of-the-art pretraining corpora for LLMs. Our work produced the first permissible dataset achieving results comparable to or even surpassing non-permissible sources (paper coming soon).

In addition, I am the co-author and maintainer of Terminal-Bench and collaborate with Professor Ludwig Schmidt’s lab.

News and Timeline

2025

2024

2023

2022