Matthew Watkins is a British mathematician and AI safety researcher. While studying language models at SERI-MATS in Berkeley and London, he discovered 'a cluster of strange keywords that will break ChatGPT' (Vice). Posts about his findings for the tech-rationalist website LessWrong were among the most upvoted in the site's history. Leading AI critic Eliezer Yudkowsky called his research 'one of the more hopeful processes happening on Earth right now'.