Governing AI Economics: Cost, Value and Portfolio Decisions

All courses / AI Governance / Module 4 / Chapter 16A

Learning objectives

After the lesson the participant can:

Explain the drivers that make the cost of systems built on large language models variable at run time.
Define a unit of value with a recorded baseline and a quality constraint for one system.
Set a cost envelope with soft and hard thresholds, a fallback and a named stop authority.
Apply the governance forum's decision table to a renewal or scale decision, recording the evidence that is missing.

Key concepts

Unit of value: Something the business already counts, such as a standard letter sent or a claim correctly routed, with a recorded baseline and a quality constraint so that it cannot be improved by lowering the standard. A cost per token is a price, not a value.
Cost envelope: What the organisation has decided to spend in a period, distinct from the forecast of what it will spend. The envelope is a decision; the forecast is an estimate with recorded assumptions and the previous period's error.
Soft and hard thresholds: A soft threshold notifies the budget owner; a hard threshold triggers the platform's fallback, such as a cheaper model, a reduced scope or search-only mode. A system supporting a statutory service needs a fallback that keeps the service running.
Budget owner: One named person, usually the product or service owner, who answers for the envelope and the benefit together, so that nobody books the benefit while someone else explains the overspend.
Decision table: The forum's five outcomes with the conditions that support each: approve, approve with conditions, pause, scale, and retire or redesign. Every decision names the next review date, and the forum records what evidence it did not have.

Interactive exercises

Do them here and get feedback at once. Choose a card and then where it belongs, or drag it.

Interactive exercise 1 · Sort

The forum's decision table

Sort each set of conditions under the decision that the chapter's decision table says it supports.

Interactive exercise 2 · Scenario

What to tell the elected committee

Apply the chapter's practices for handling uncertain benefits to a funding paper at Nordvik Region.

Teaching plan

10 min	Opening: participants say who in their organisation sees the invoice for AI consumption, who sees the benefit, and whether it is the same person.
25 min	Teacher presentation of the cost drivers, the four disciplines that turn a demonstration into evidence, who owns the money, the investment gates and the minimum controls.
15 min	Guided reading of stop record SPD-2026-007: the retry storm, the hard cap pausing the agent before the budget owner replied, and why cost is shown beside service impact.
30 min	Exercise in groups: set an envelope and stop conditions for one system, compare options on one unit of value, and reach a decision with the table.
10 min	Debrief: groups read out the section on what has not been shown, following Nordvik Region's appraisal summary for its elected committee.

Discussion

The first tranche buys the baseline, not the system, if no baseline exists. How many of your AI investments have a measured baseline of the current process, errors and waiting times included?
Minutes saved become money only if posts are not filled, work is redirected or a service is delivered noticeably faster. How should your business cases treat self-reported time savings?
A stop record showing only EUR 965 would invite the wrong decision in either direction. What else must a forum see before it lets an agent resume, and why?

Written exercise

Exercise · 30 minutes

Envelope, comparison and decision

For one AI system that is up for scaling or renewal in your organisation, or Hansa Mutual's document-extraction service, do three things. One: define the unit of value, its baseline and a quality constraint; name the budget owner; set the cost envelope for the next period with a soft alert, a hard stop, the fallback that applies at the hard stop, the role that may execute the stop alone, and three events that reopen the record. Two: compare at least four options on that one unit of value, including a non-AI option and doing nothing, with cost range, exit and sovereignty beside price. Three: apply the decision table, state the outcome, list the evidence you did not have and name the next review date.

Deliverable: An investment and value record in outline, a four-option comparison table on one unit of value, and a decision with missing evidence and review date.

Your work

Self-test

Choose an answer to see whether it is right, or open the answer below each question.

How does the chapter distinguish the cost envelope from the forecast?
Show the answer
B. The envelope is a decision on what to spend; the forecast is an estimate of what will be spent
The envelope is what the organisation has decided to spend in the period, distinct from the forecast of what it will spend. The envelope is a decision; the forecast is an estimate with assumptions and a recorded error.
In the chapter's practical guide, what does missing evidence at a renewal review yield?
Show the answer
D. Approve with conditions, never approve
Step 6 of the renewal guide applies the decision table and records missing evidence, which yields approve with conditions, with an owner and a date, and never a plain approval.
Why does the chapter say a unit cost that falls because quality was lowered is a breach and not a saving?
Show the answer
A. Because the unit-cost ceiling is paired with a quality floor, so lowering the standard cannot count as a gain
The envelope guide pairs a unit-cost ceiling with a quality floor. A system that is cheaper per letter but needs more corrections has moved cost, not removed it.