AI agents have reached a critical threshold in handling extended complex workflows, marking a significant turning point for how AI reshapes workplace productivity. Major research labs—METR, GDPval, and Anthropic—are converging on this assessment. The numbers tell the story: when an AI tool can cut 8 hours of work by 65% consistently, it fundamentally restructures how tasks get done. Even accounting for occasional errors or edge cases, the math changes the economics of work. This isn't incremental improvement anymore. Long-horizon task automation is crossing from experimental into practical territory, and it's starting to ripple across industries. The real question now isn't whether AI can handle these jobs—it's how quickly adoption follows.