Former White House AI and Crypto Czar David Sacks accused former Anthropic researcher Jacob Coxon of coordinating a publicity campaign after Coxon canceled a planned All-In Podcast interview hours before it was scheduled. Sacks questioned Coxon’s whistleblower claims and the rapid spread of his warning that Anthropic and OpenAI were pursuing self-improving superintelligence. Anthropic alignment lead Evan Hubinger endorsed the concern, saying he sees a greater than 10% chance AI causes human extinction within a decade. Sacks linked the warning’s early distribution to Encode AI, the AI Policy Network and the AI Futures Project, which he said had connections to Dustin Moskovitz, an Anthropic Series A investor. The dispute comes as Anthropic is reported to be pursuing a public listing, with the source material citing both a confidential IPO filing and conflicting valuation figures of $965 billion and $2 trillion. The debate has raised potential Securities and Exchange Commission disclosure and product-liability questions, while Nvidia CEO Jensen Huang called Coxon’s comments outlandish and deeply untrue.