AI infrastructure optimization is shifting focus from token generation to prefill processing, which handles input context before model output begins. Prefill and decode have different computational needs, leading companies like Lumai to advocate for specialized hardware architectures rather than using the same processors for both tasks. As context lengths grow and agentic workflows increase, prefill efficiency becomes critical to managing power budgets and inference economics in data centers.
Long-horizon AI coding work fails due to ephemeral context and unreliable self-reports rather than coding inability. The Chief of Staff pattern addresses this by separating orchestration (one coordinating session) from execution (separate worker sessions), storing state in durable external systems, and verifying all agent claims through re-execution rather than trusting reports.