Writing

• The Model-Routing RubricModel choice is a P&L decision. The rubric I use to route every task to the cheapest model that clears the bar.
• Agents Are the Primary CustomerThe best new infra companies sell to software, not people. Chosen once by an agent, used indefinitely.
• The P&L LensStart from the number that has to move, then decide what AI is worth building. Not the other way around.