Anthropic called for coordinated global pause in frontier AI development, warning of recursive self-improvement risks
Jun 4, 2026On June 4, 2026, Anthropic published a major blog post via its Anthropic Institute warning that AI systems are approaching recursive self-improvement capabilities. The company disclosed that 80%+ of code merged into its codebase is now written by Claude, with engineers merging 8x more code per day compared to 2024. CEO Dario Amodei compared AI development to 'a car with only a gas pedal and no brake.' Anthropic proposed an international coordination mechanism allowing labs to conditionally pause development if risks escalate. Critics noted the announcement coincided with Anthropic's confidential IPO filing at ~$965B valuation.