Key takeaways
Jacob Coxon, a 27-year-old Cambridge-trained researcher and GPT-4.5 core contributor, quit Anthropic after stints in frontier pretraining at OpenAI and Anthropic, warning that labs are racing toward self-improving superintelligence and betting with human lives—his post blew past 100M views on X. Anthropic’s alignment lead and other insiders backed him personally, putting extinction odds this decade above 10%. Kazike rereads Tim Urban’s 2015 AI Revolution—exponential progress, the intelligence ladder, extinction vs species immortality—and feels we are already on that timeline; he hopes the balance beam tips toward immortality.
