Artificial intelligence company Anthropic announced that more than 80% of the code merged into its production systems in May was authored by its AI model Claude rather than human engineers. The milestone represents an eight-fold increase in code volume shipped per engineer compared to the company's 2021-2025 baseline, according to a company report.

Anthropic co-founder and CEO Dario Amodei said the transition has accelerated AI development and could represent a path toward recursive self-improvement, where AI systems autonomously build more capable successors. The company reported that Claude's success rate on complex engineering problems reached 76% in May 2026, a 50-point increase over six months.

Separately, Airbnb CEO Brian Chesky announced plans to launch a new AI laboratory. Chesky had previously stated the company had not struck partnerships with large language model providers because existing products were not sufficiently advanced for Airbnb's needs.

The United States and Japan announced a $1 billion joint partnership focused on artificial intelligence, quantum computing, and fusion energy research. Each country will contribute $500 million to the initiative, with Energy Department Undersecretary for Science Darío Gil calling it "the defining moment for the next era of science."

Anthropic President Daniela Amodei indicated the company may consider an initial public offering, citing high computing costs as a potential driver for accessing public markets. Co-founder Jack Clark separately warned that AI development could reach a point where systems advance without human input, emphasizing the need for control mechanisms.

Apple approved its first AI agent for the Messages for Business platform, developed by startup Poke, which allows users to interact with AI through text messages. Additionally, fusion startup Helion, backed by Sam Altman, raised $465 million to build a power plant for Microsoft by 2028.