Anthropic’s AI Tools Turn Code Review Automatic and Cut a 500K‑Line Rewrite to 11 Days
Inside Anthropic, AI-driven code review and testing let engineers prototype fluidly while a Rust rewrite of the 500k‑line Bun project finished in 11 days, down from a year. Teams stay small—two‑pizza squads—but shift focus to verification and AI‑assisted tooling, reshaping engineering practices across the lab.