Anthropic's IPO Filing Warns It May Be 'Imminently' Close to RSI

Anthropic's IPO filing warns that it may soon achieve recursive self-improvement (RSI)—where AI systems autonomously improve their own training—though it notes none of its current models have crossed this threshold yet. However, the company's own published research and data from May 2026 suggest the loop remains unclosed, with Claude operating fully autonomously in zero measured research areas and the company acknowledging it is "not there yet" and RSI is "not inevitable." The disclosure appears designed to address regulatory concerns about frontier AI development as the company moves toward a public listing.