OpenAI will not pursue an initial public offering in 2026, CEO Sam Altman said, arguing that a listing would be ill-advised while the company confronts AI safety, alignment and coordination with governments. Altman said he could not quantify the chance of AI-driven human extinction, but that even a risk of 10%, 8% or 6% would be unacceptable. His comments followed calls from Anthropic CEO Dario Amodei to slow improvements in AI capabilities and growing bipartisan demands for U.S. rules governing advanced AI systems. OpenAI has been associated with a potential trillion-dollar flotation, while Anthropic is continuing preparations for its own IPO.