Scaling Autonomy: How Complete Specifications Changed Agentic Coding

Long-horizon autonomy has fundamentally shifted the unit of developer delegation from individual functions to entire modules, enabling more efficient workflow structures. The real breakthrough is not raw capability but technique: providing complete task specifications upfront yields dramatically better results and lower costs than iterative clarification. This changes how teams should approach agentic tools—success depends on understanding how to specify work clearly and maintain effective human review, not just relying on model power.