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Cheap Tokens, Expensive Decisions

Cheap Tokens, Expensive Decisions

What you’ll learn
  • Inference costs collapsed over 280-fold in eighteen months, but organizational decision-making—accountability, coordination, trust, and commitment—remains the real bottleneck, so AI's task-level gains don't automatically translate into firm-level productivity.
  • The key takeaway: the scarce resource is no longer drafting options but deciding what to commit to, so organizations should invest in decision engineering (clear ownership, evidence standards, audit trails, faster approval loops) rather than just better prompts or models.

Inference is nearly free. Judgment, trust, and accountability are not.

Fig 1 — Two clocks: cheap tokens stream in at machine speed; expensive decisions still wait their turn.

Two clocks are running in every workplace right now. One belongs to the model. The other belongs to the institution.

The model's clock got more than 280 times cheaper in eighteen months. The institution's clock still runs on meetings, approvals, and the time it takes for people to trust a result enough to act on it.

We did not make decisions cheaper. We made the draft before the decision almost free.

The cost of a thought collapsed

The most important AI number of the last two years is not a benchmark score. It is a price.

For output quality roughly equivalent to a 2022-era frontier model, the cost of inference fell from $20.00 per million tokens in November 2022 to $0.07 by October 2024. That is a decline of more than 280-fold in about eighteen months. hai.stanford.edu

Bar chart showing the cost per million tokens falling from $20.00 in November 2022 to $0.07 in October 2024
Fig 2 — The cost of a fixed-quality thought collapsed by more than 280-fold in under two years.

When the marginal cost of a plausible first draft approaches zero, the economics of work change. The scarce resource is no longer thinking of something to say. It is deciding what is worth saying, what is true, and what the organization is willing to stand behind.

Two caveats matter. The 280-fold figure is for a fixed quality level; expectations rise as models improve. And a falling unit price does not guarantee a falling total bill, because volume often expands faster than price falls. Cheap tokens can still mean an expensive habit.

Amdahl’s Law for organizations

In 1967, Gene Amdahl made an observation about parallel computers that now reads like a management insight. If only part of a system can be sped up, the overall improvement is capped by the portion that cannot. dl.acm.org

Organizations have a serial remainder. A model can draft in seconds, but someone still has to check the facts, decide the trade-offs, accept the accountability, and coordinate with the people affected. Making the parallel part almost infinitely fast does not make the serial part disappear. It makes it more visible.

Diagram of a single bar mostly colored teal labeled accelerated by the model, with a small gold remainder labeled still waits for people, and annotations showing speedup ceilings of 10x and 100x
Fig 3 — Amdahl's Law at work: the part that still waits sets the ceiling on the whole system.

This is why AI can feel simultaneously miraculous at the task and disappointing at the company level. The model is not the bottleneck. The bottleneck is the decision the model is waiting for.

The bottleneck moved. It used to be knowledge: could you get the information, the analysis, the words? Now it is permission: who is allowed to act, how much evidence is enough, and who signs their name to the result.

The evidence is already two-sided

The task-level evidence is strong. In customer support, agents with a generative assistant resolved about 15% more issues per hour. In professional writing, people completed assignments about 40% faster, with higher measured quality. academic.oup.com www.science.org

Both studies are also reminders to be careful. They measure specific tasks under controlled conditions. They do not say that every job, team, or firm becomes 15% or 40% more productive. They say the technology already works where the work is bounded and the output can be checked.

Two-panel chart showing customer support productivity rising to an index of 115 and professional writing time falling to an index of 60, each compared with a control group at 100
Fig 4 — Task-level gains are real, and they are still task-level.

The firm-level picture is more modest. By early May 2026, about 19.8% of U.S. employer firms reported using AI in at least one business function. Information led at 39.7%, finance and insurance at 33.9%, retail near 14%. www.census.gov

Horizontal bar chart of AI use by sector, with Information at 39.7 percent, Finance and insurance at 33.9 percent, a national average line at 19.8 percent, and Retail trade at about 14 percent
Fig 5 — Adoption is real, uneven, and still far from universal.

Both things are true. AI already works at the level of the task. It still has trouble becoming the operating system of an institution.

Why decisions stay expensive

A draft is cheap because it is reversible and nobody has to defend it. A decision is expensive because it allocates commitment.

Four things make it so:

  1. Accountability. Someone must own the outcome if it is wrong.
  2. Coupling. Decisions touch other people, systems, and obligations.
  3. Context. The model sees the prompt; the institution sees the history.
  4. Taste. Choosing among plausible options is a judgment about what matters.

AI reduces the cost of options. It does not reduce the cost of choosing.

A model can propose a new price list in a minute. Changing the price list still touches customers, contracts, finance, and support. The proposal is cheap; the commitment is not.

A draft is a suggestion. A decision is a promise with a name attached.

The new unit of work

For most of the last century, the unit of white-collar work was the document: the memo, the model, the deck. AI collapses the cost of producing one.

The scarce unit now is the decision: a commitment to act, with an owner and a consequence. Organizations that treat decisions as designed artifacts — with owners, evidence standards, and reversal costs — will compound AI's gains. Organizations that treat decisions as an afterthought will simply produce more documents faster.

What to actually build

If the serial remainder is the constraint, the work is not prompt engineering. It is decision engineering.

1. Find the serial remainder

Map an end-to-end process and mark where work waits for a human, a meeting, or a policy. That queue, not the model, sets your ceiling.

2. Design decisions, not just prompts

Specify who decides, what evidence is required, what is out of bounds, and what happens on appeal. A clear decision path is worth more than a better prompt.

3. Measure end-to-end cycle time

Model latency is an engineering metric. Institutional latency is the business metric. Measure the distance from question to committed answer.

4. Make trust structural

Audit trails, source citations, and review tiers are not bureaucracy. They are the mechanism by which fast output becomes acceptable output.

5. Make the institution faster, not just the model

Smaller approval batches, clearer ownership, and shorter review loops often beat another model upgrade.


Tokens got cheap. Decisions did not.

The model writes the first draft. The institution still writes the last one.

The organizations that win the next decade will not be the ones with the best models. They will be the ones that make deciding cheap too.

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