According to Anthropic (@AnthropicAI), Opus 4.6 was tasked with using agent teams to autonomously build a C compiler, with minimal human oversight. After two weeks, the compiler successfully operated on the Linux kernel, demonstrating Opus 4.6's capabilities in complex software engineering. This experiment highlights significant advancements in autonomous software development, suggesting that AI agents can now independently execute sophisticated programming tasks. As reported by Anthropic, these findings have major implications for the future of software engineering, potentially reducing development time and costs while expanding business opportunities for automated coding and systems integration.