Claude Agent Teams Build Linux-Compatible C Compiler

Nicholas Carlini, a researcher on a Safeguards team, reports that he tasked 16 Claude instances to develop a Rust-based C compiler capable of building Linux 6.9 on x86, ARM, and RISC-V. Over nearly 2,000 Claude Code sessions and about $20,000 in API costs, the agents produced a roughly 100,000-line compiler; Carlini emphasizes harness design, testing, and parallel coordination lessons for long-running autonomous agent teams.