Sixteen Claude AI agents working together created a new C compiler
Summary
Ars Technica reports that Anthropic used 16 Claude Opus 4.6 agents in Docker containers with an agent-teams workflow to collaboratively build a C compiler from scratch. Over about two weeks and roughly 2,000 Claude Code sessions, at a cost of about $20,000 in API fees, the team produced a 100,000-line Rust-based compiler capable of building a bootable Linux 6.9 kernel on x86, ARM, and RISC-V. The project demonstrates potential for autonomous agent coding but also highlights significant limitations and the need for extensive human scaffolding and verification.