Cost4 articles

September 12, 2026

Suppose an engineer tells their manager they need a bigger token budget because they can't keep working without it. It sounds like good news until you ask why the pull request has three retry wrappers and watch them paste the question into the agent. The bill is the visible cost of AI. The expensive token is the one spent replacing your own understanding. Write down how you work so the agent stops rediscovering it, keep the understanding with the people who get paged, and judge token spend by what it bought.

July 24, 2026

Imagine two engineering teams with the same size, the same roles, and the same AI budget. A year later, one has cut delivery time by 40 percent; the other has a very impressive token dashboard. Most enterprise budgets would fund them identically next year, because technology budgeting is built around access and fairness. That model works for software licenses and breaks down with AI, because AI is productive capacity whose value depends on where it is applied. Give everyone baseline access, then manage the rest like an investment portfolio: measure outcomes at the team level and move capacity toward the teams that turn it into revenue.

June 16, 2026

We only pay when it runs, says one team; this instance is cheaper at volume, says the other. Both can be true, and both can lead to bad decisions. Underneath is a tradeoff between utilization efficiency and economies of scale: serverless makes waste visible as usage, and hosting hides it as idle capacity. The cheapest system is the one whose cost model matches the shape of the workload and the maturity of the team operating it.

June 14, 2026

Somewhere in most codebases there is a clever abstraction that saved three days of development and has been collecting interest ever since. Cost-adjusted software engineering judges work by the value it creates against the full cost of building and operating it. You can pay up front through testing, CI/CD, and clear ownership, or pay forever through incidents and rework.

© 2026 ABWaters. Thinking out loud.