AI coding benchmark MirrorCode published its full results June 26, showing Claude Opus 4.7 autonomously rebuilt a 60,000-line interpreter and scored 56% overall — completing tasks that take human engineers up to 17 weeks in under 14 hours. Epoch AI and METR open-sourced the scaffold, paper, and 22 of 25 target programs.
Autonomous AI Coding Clears 60,000-Line Ceiling: MirrorCode Benchmark Released
