Calculator

Your client is going to ask what the AI changed.

One in three agencies has already been asked for a discount. Estimate what AI did to your cost to deliver before someone else picks the number for you.

Your work

Where do you actually use AI?60% of delivery
Pre-AI share · AI multiplier4 of 7 selected

The percentages are your baseline before AI, not today’s split. If AI now does all your code review, that is the result. The 8% is what review used to cost you.

How far along are you?

Scales how much of each multiplier you actually realise. Backfiringhappens: METR’s 2025 randomised trial found experienced developers took 19% longer with AI, while believing they had been about 20% faster.

How you bill

Blended across the team, not your top rate card line.

Your read

Hours to deliver, after AI

54%

62% to 51% across neighbouring maturities · floor 40%

Hours after AI as a share of the hours before, on the mix you ticked.

Revenue that stops appearing on invoices

€931,392

7,762 hours a year · rolling out

This is also, precisely, the number your client will point at.

Hourly billing turns faster delivery into deflation.

You free 7,762 hours. Unless you sell every one of them to new work, that capacity leaves as a smaller invoice, not a bigger margin. When the client asks you to pass on the AI savings, €931,392 is the number in the room, except neither of you can see it, so the argument gets settled by whoever sounds more confident.

Measure it properlyGet your report

Your report

Get the long version, written for your firm.

Your answers, set against the published research, with the scenarios and the measurement plan behind them.

What is in it

ScenariosYour mix at a research-conservative rate, at our model, and at the task frontier, with the money each implies.
EvidenceThe field studies and trials behind each multiplier, with what they measured and where they disagree.
WorkflowsThe moves that cut the hours in your work areas, and the tooling that supports each one.
MeasurementWhat to instrument first so the next version of this number comes out of your own record.
See the example report

How professions compare

The floor differs by profession. The share anyone has reached does not.

Each bar runs to that profession’s floor, the fewest hours its work mix can ever need. The filled part is what the typical mix actually reaches at the maturity you selected. The gap is the unclaimed remainder.

Law firm45% of the hours · floor 30%51%
Accounting or advisory firm52% of the hours · floor 36%52%
Marketing or creative agency52% of the hours · floor 38%56%
Software or product agency (you)54% of the hours · floor 40%57%
Management consultancy54% of the hours · floor 40%57%

Modelled, not measured. These are our assumptions about each profession’s work mix.

The estimate

Ticked boxes

You answered from memory. Useful for a direction, thin in a client meeting.

The measurement

Your record

The real number is already sitting in two places that have never been joined: the hours your team logs, and what your AI tools actually ran and cost. WhoWorked puts them on one record, per client, so the next rate conversation runs on what happened rather than on an estimate.

Start 30-day trialSee how it works