Machine Heart

Jun 25, 2026 · Artificial Intelligence

Why 80% of Anthropic’s Code Is Merged by Claude and How “Close the Loop” Redefines Agent Testing

Anthropic reports that Claude now merges over 80% of its internal code, with failure rates cut by three‑fold, and outlines how planning, error‑recovery, and long‑context abilities enable a “Close the Loop” approach that developers must adopt to build future‑ready AI agents.