The machine begins to write itself

Anthropic disclosed that more than 80% of the code merged into its own production codebase in May 2026 was authored by Claude. Read that as what it is: a self-improving system now does the majority of the work of improving itself, in production, at one of the labs at the frontier. Meanwhile the world's data centres drew 448 terawatt-hours in 2025 (a UN figure), Illinois paused its data-centre program over energy and water, and the cost of running these models became the single most-discussed con ...