You paid for the licences twice. The second payment never reaches an invoice. It leaves in hours, a few minutes at a time, every week of the year.
Here is the leak. Your best people rewrite the same prompts from memory, again and again. The email that should take ten minutes takes an hour. Not because the model is slow. Because the instruction that worked last month was never written down anywhere.
The direct answer: a prompt your team relies on belongs in one shared library, owned by one named person. Until it lives there, every employee privately re-derives it. The firm pays full salary for the re-deriving, forever.
- The invoice you never see
- Do the arithmetic on your own week
- One library, one owner
The invoice you never see
Token dashboards will not show you this cost. Stop counting tokens. Even the man who sells them calls the metric fake covers what those dashboards miss. The missing line is human time, spent rebuilding instructions the firm already discovered once.
The tools themselves keep moving under your team. Notion agent Memories are private to each user. Decide what they may keep shows memory locked inside individual accounts. Gemini for students goes off by default, and Google Search is on the same list shows settings shifting without notice. Defaults and private memories are no substitute for a written standard.
Even a one-line standard pays. The AI training opt-out is one robots.txt line now. Most Canadian sites we checked name no AI crawler is about a single written line doing real work. A prompt library is the same idea, applied to daily tasks.
Do the arithmetic on your own week
No survey is needed here. Run the figures on your own team instead. Count the prompts you personally retyped last week. Multiply by the extra minutes each rewrite and repair cost you. Multiply again by the loaded hourly cost of your time.
A light example shows the shape of the math. Three rewrites a week at twenty lost minutes each is one hour gone. That is roughly fifty hours a year, per person, on repetition. Your numbers will differ from the example. The direction of them will not.
Now scale it honestly. Ten people leaking one hour a week is five hundred hours a year. That is a quarter of a working year, spent retyping. It buys nothing the firm did not already own.
One library, one owner
The fix is one shared prompt library, started this week. One document or folder that every employee can open. Each entry carries the task, the prompt, and the date it last worked. One named owner keeps it current and deletes what stops working.
Start with the ten prompts your team rewrites most. Draft them once, together, and save them properly. Add one entry each time someone solves a task twice. Review the library monthly, the way you review any other asset.
Then check your own figure again in thirty days. Count the rewrites your team still does from memory. That smaller number is the return on one afternoon of writing things down. Your licences were never the expensive part. The repetition was.
