Controlling AI spend once it stops being a toy

Nobody's first AI bill is a surprise. It's the fourth one.

The demo cost pennies,
the pilot cost lunch money,
then you wired it into production and the invoice grew a second digit 📈

Here is what almost nobody checks: the money is rarely in the number of calls. It's in what each call is carrying.

A conversation re-reads everything above it on every turn. An agent that loops six times pays six times. A whole file pasted in when four functions mattered pays for the rest of the file forever.

And the biggest one: using the strongest model for jobs a small one would finish faster.

I wrote up where the money goes, the patterns that cut it without cutting quality, and the guardrails that stop a runaway job billing for three hours while you sleep.

Including the part most cost guides skip: when spending more is simply the right call.

Free. No email wall.

Comment "SPEND" 👇 and I'll send it to your DMs.