Claude Is Rapidly Building Its Own AI Successor, Anthropic Wants To Hit Pause

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Anthropic has disclosed that Claude, its own AI model, now writes more than 80% of the code going into the company's internal codebase. The company adds the pace at which it's doing so is accelerating fast enough to raise a genuinely alarming question: how long before the AI is building itself without much human input at all?

That trend, taken far enough and given enough compute, points toward what's called recursive self-improvement, an AI system capable of fully autonomously designing and developing its own successor. Anthropic says we're not there yet, and that it isn't inevitable. But it could happen sooner than most establishments are prepared for.

The internal numbers back that up. As of May 2026, more than 80% of code merged into Anthropic's codebase was authored by Claude. Before Claude Code launched in research preview in February 2025, that figure was in the low single digits. By the...

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